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AU3971295A - Substituted tetra- and pentapeptide inhibitors of protein:farnesyl transferase - Google Patents

Substituted tetra- and pentapeptide inhibitors of protein:farnesyl transferase

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Publication number
AU3971295A
AU3971295A AU39712/95A AU3971295A AU3971295A AU 3971295 A AU3971295 A AU 3971295A AU 39712/95 A AU39712/95 A AU 39712/95A AU 3971295 A AU3971295 A AU 3971295A AU 3971295 A AU3971295 A AU 3971295A
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obn
trp
tyr
ala
cbz
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Gary Louis Bolton
Alfred Campbell
Richard Gowan
John Cooke Hodges
Donald Hupe
Daniele Leonard
Tomi Sawyer
Judith Sebolt-Leopold
Francis J. Tinney
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Warner Lambert Co LLC
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Warner Lambert Co LLC
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
    • C07K7/04—Linear peptides containing only normal peptide links
    • C07K7/06—Linear peptides containing only normal peptide links having 5 to 11 amino acids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
    • C07K5/04—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing only normal peptide links
    • C07K5/10—Tetrapeptides
    • C07K5/1024—Tetrapeptides with the first amino acid being heterocyclic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides

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  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Description

SUBSTITUTED TETRA- AND PENTAPEPTIDE INHIBITORS OF PROTEIN:FARNESYL TRANSFERASE
FIELD OF THE INVENTION
The present invention pertains to a number of compounds which can be used in the medicinal field to treat, prophylactically or otherwise, uncontrolled or abnormal proliferation of human tissues. More specifically, the present invention pertains to a number of compounds which act to inhibit the farnesyl transferase enzyme that has been determined to activate ras proteins which in turn activate cellular division and are implicated in cancer and restenosis.
BACKGROUND OF THE INVENTION
Ras protein (or p21) has been examined extensively because mutant forms are found in 20% of most types of human cancer and greater than 50% of colon and pancreatic carcinomas (J. B. Gibbs, Cell ££, 1 (1991) , T. Cartwright, et al., Chi ica Oσσi 1£, 26 (1992)). These mutant ras proteins are deficient in the capability for feedback regulation that is present in native ras and this deficiency is associated with their oncogenic action since the ability to stimulate normal cell division can not be controlled by the normal endogenous regulatory cofactors. The recent discovery that the transforming activity of mutant ras is critically dependent on posttranslational modifications (J. Gibbs, et al., Mi robiol. Rev. 5J., 171 (1989)) has unveiled an important aspect of ras function and identified novel prospects for cancer therapy.
In addition to cancer, there are other conditions of uncontrolled cellular proliferation that are related to excessive expression and/or function of native ras proteins. Post surgical vascular restenosis is such a condition. The use of various surgical revascularization techniques such as saphenous vein bypass grafting, endarterectomy and transluminal coronary angioplasty is often accompanied by complications due to uncontrolled growth of neointimal tissue, known as restenosis. The biochemical causes of restenosis are poorly understood and numerous growth factors and protooncogenes have been implicated (A. J. Naftilan, et al. , Hypertension 13. 706 (1989) and sL. Clin. Invest. 93. 1419; G. H. Gibbons, et al., Hypertension \ . 358 (1989); T. Satoh, et al. , Mollec. Cell. Biol. 13_, 3706 (1993)). The fact that ras proteins are known to be involved in cell division processes makes them a candidate for intervention in many situations where cells are dividing uncontrollably. In direct analogy to the inhibition of mutant ras related cancer, blockade of ras dependant processes has the potential to reduce or eliminate the inappropriate tissue proliferation associated with restenosis, particularly in those instances where normal ras expression and/or function is exaggerated by growth stimulatory factors. Ras functioning is dependent upon the modification of the proteins in order to associate with the inner face of plasma membranes. Unlike other membrane- associated proteins, ras proteins lack conventional transmembrane or hydrophobic sequences and are initially synthesized in a cytosol soluble form. Ras protein membrane association is triggered by a series of posttranslational processing steps that are signaled by a carboxyl terminal amino acid consensus sequence that is recognized by protein:farnesyl transferase. This consensus sequence consists of a cysteine residue located four amino acids from the carboxyl terminus, followed by two lipophilic amino acids and the C-terminal residue. The sulfhydryl group of the cysteine residue is alkylated by farnesyl pyrophosphate in a reaction that is catalyzed by protein:farnesyl transferase. Following prenylation, the C-terminal three amino acids are cleaved by an endoprotease and the newly exposed alpha-carboxyl group of the prenylated cysteine is methylated by a methyl transferase. The enzymatic processing of ras proteins that begins with farnesylation enables the protein to associate with the cell membrane. Mutational analysis of oncogenic ras proteins indicate that these posttranslational modifications are essential for transforming activity. Replacement of the consensus sequence cysteine residue with other amino acids gives a ras protein that is no longer farnesylated, fails to migrate to the cell membrane and lacks the ability to stimulate cell proliferation (J. F. Hancock, et al., Cell 57. 1617 (1989), W. R. Schafer, et al., Science 215., 379 (1989), P. J. Casey, Proc. Natl. Acad. Sci. USA !£, 8323 (1989) ) .
Recently, protein:farnesyl transferases (PFTs, also referred to as farnesyl:protein transferases) have been identified and a specific PFT from rat brain was purified to homogeneity (Y. Reiss, et al., Bioch. Soc. Trans. 20, 487-88 (1992)). The enzyme was characterized as a heterodimer composed of one alpha- subunit (49 kDa) and one beta-subunit (46 kDa) , both of which are required for catalytic activity. High level expression of mammalian PFT in a baculovirus system and purification of the recombinant enzyme in active form has also been accomplished ( .-J. Chen, et al. , J. Biol. Chem. 268. 9675 (1993)).
In light of the foregoing, the discovery that the function of oncogenic ras proteins is critically dependent on their posttranslational processing provides a means of cancer chemotherapy through inhibition of the processing enzymes. The identification and isolation of a protein:farnesyl transferase that catalyzes the addition of a farnesyl group to ras proteins provides a promising target for such intervention. Recently it has been determined that prototypical inhibitors of PFT can inhibit ras processing and reverse cancerous morphology in tumor cell models (N. E. Kohl, et al., Science 260. 1934 (1993), G. L. James, et al. , Science 260. 1937 (1993), A. M. Garcia, et al. , J. Biol. Chem. 268. 18415 (1993)). Thus, it is possible to prevent or delay the onset of cellular proliferation in cancers that exhibit mutant ras proteins by blocking PFT. By analogous logic, inhibition of PFT would provide a potential means for controlling cellular proliferation associated with restenosis, especially in those cases wherein the expression and/or function of native ras is overstimulated. PCT Application WO91/16340 discloses cysteine containing tetrapeptide inhibitors of PFT of the formula CAAX.
European Patent Application 0461869 discloses cysteine containing tetrapeptide inhibitors of PFT of the formula Cys-Aaa**-Aaa2-Xaa. European Patent Application 0520823 discloses cysteine containing tetrapeptide inhibitors of PFT of the formula Cys-Xaa1-dXaa -Xaa3.
European Patent Application 0523873 discloses cysteine containing tetrapeptide inhibitors of PFT of the formula Cys-Xaa1-Xaa2-Xaa3.
European Patent Application 0528486 discloses cysteine containing tetrapeptide amides inhibitors of PFT of the formula Cys-Xaa1-Xaa2-Xaa3-NRR1. European Patent Application 0535730 discloses pseudotetrapeptide inhibitors of PFT of the following two formulas:
European Patent Application 0535731 (US 5,238,922) discloses esters of pseudotetrapeptide inhibitors of PFT of the formula:
US 4,035,348 discloses tetrapeptide antagonists of luteinizing hormone releasing factor of the formula A-Rj-Tyr(benzyl) -Ser(benzyl) -D-Ala-R2, wherein one of the definitions of R -*-s L-His(benzyl) .
US 4,043,993 discloses pentapeptide antagonists of luteinizing hormone releasing factor of the formula X-R-Tyr(benzyl) -Ser(benzyl) -R1-Y, wherein one of the definitions of R is His(benzyl).
US 4,062,835 discloses pentapeptide antagonists of luteinizing hormone releasing factor of the formula X-R-Tyr(methyl) -Ser(benzyl) -R1-Y, wherein one of the definitions of R is His(benzyl).
Compounds disclosed in the above references do not disclose or suggest a novel combination of structural variations found in the present invention described hereinafter.
SUMMARY OF THE INVENTION
Accordingly, the present invention is a substituted tetra- or pentapeptide compound of Formula I:
wherein n = 1 or 2 ; A = - COR2 , - C02R2 , - CONHR2 , - CSR2 , - C (S ) R2 , - C (S) NHR2 , or H; wherein R2 is alkyl, - (CH2)m-cycloalkyl, - (CH2)m-aryl,
- (CH2)m-heteroaryl, and = 0, 1, 2, or 3;
R = independently H or Me; Y = independently H or Me;
Z = independently H or Me; wherein R4' * H or Me;
-SR4", wherein R4" - H, alkyl, trityl, or heteroaryl;
wherein R5' - H, -OH, -O-alkyl, alkyl, -CO-aryl,
- (CH2)m-aryl, -0(CH2)m-cycloalkyl, -0(CH2)m-aryl, -0(CH2)m-heteroaryl, -OP03R5"2, -CH2P03R5"2,
-CF2P03RS"2, or -CFHP03R5"2, wherein R5' is located at either the ortho, meta, or para position and R5'' - H, alkyl, alkylaryl, or cyclohexyl, and m is as described above; -COOR7, wherein R7 = H, Me, t-butyl, or benzyl; -SR8, wherein R8 = H or trityl;
R6 = -OR6', wherein R6' = H, benzyl, -P03R5"2, wherein R5'' is as described above; -CH2-R9, wherein R9 = -P03R5''2, wherein R5'' is as described above;
-SR6 ', wherein R6'' ■ H, benzyl, or trityl; C = Gly, Ala, Val, Leu, He, Phe, Tyr, Tyr(OMe) , Pgl, homoPhe, Trp, Trp(Me), or Trp(CHO); D = Gly, Ala, or absent; E = -COOH, -CONH2, -CONHNH2, -CONHR10, or -C02R10, wherein R10 = H, alkyl, - (CH2)m-cycloalkyl,
- (CH2)m-aryl, - (CH2)m-heteroaryl, and m is as described above; an isomer or a pharmaceutically acceptable salt thereof. The present invention is also directed to the use of a compound of Formula I, or a pharmaceutically acceptable salt therefrom, to inhibit the activity of a protein:farnesyl transferase enzyme as a method for treating tissue proliferative diseases. A further embodiment of the present invention is the use of a pharmaceutical composition including an effective amount of a compound of Formula I as a method for the treatment of cancer.
A still further embodiment of the present invention is the use of a pharmaceutical composition including an effective amount of a compound of
Formula I as a method for the treatment of restenosis.
A still further embodiment of the present invention is a pharmaceutical composition for administering an effective amount of a compound of Formula I in unit dosage form in the treatment methods mentioned above.
A final embodiment of the present invention pertains to methods for the preparation of compounds of Formula I by solid phase synthesis and solution phase synthesis.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In the compounds of Formula I, the term "alkyl" means a straight or branched hydrocarbon radical having from 1 to 6 carbon atoms and includes, for example, methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, n-hexyl, and the like. The term "cycloalkyl" means a saturated hydrocarbon ring which contains from 3 to 10 carbon atoms, for example, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, adamantyl, and the like.
The term "aryl" means an aromatic ring which is a phenyl, 5-fluorenyl, l-naphthyl or 2-naphthyl group, unsubstituted or substituted by l to 3 substituents selected from alkyl, 0-alkyl and S-alkyl, -OH, -SH, -F, -Cl, -Br, -I, -CF3, -N02, -NH2, -NHCH3, -N(CH3)2, -NHCO-alkyl, - (CH2)mC02H, - (CH2)mC02-alkyl, - (CH2)mS03H, - (CH2)mP03H2# - (CH2)mP03 (alkyl)2, - (CH2)mS02NH2, and - (CH2)InS02NH-alkyl wherein alkyl is defined as above and m - 0, 1, 2, or 3.
The term "alkylaryl" means alkyl as defined above and aryl as defined above, for example, benzyl. The term "heteroaryl" means a heteroaromatic ring which is a 2- or 3-thienyl, 2- or 3-furanyl, 2- or 3-pyrrolyl, 2-, 3- or 4-pyridyl, 2-, 3-, 4-, 5-, 6- or 7-indolyl group, substituted or unsubstituted by 1 or 2 substituents from the group of substituents described above for aryl.
The following table provides a list of abbreviations and definitions thereof used in the present invention.
TABLE OF ABBREVIATIONS
Abbreviation* Amino Acid
Ala Alanine Arg Arginine
Asn Asparagine
Asp Aspartic acid
Cys Cysteine
Glu Glutamic acid Gin Glutamine
Gly Glycine
His Histidine
He Isoleucine
Leu Leucine Lys Lysine
Met Methionine
Phe Phenylalanine
Pro Proline
Ser Serine Thr Threonine
Trp Tryptophan
Tyr Tyrosine
Val Valine
Abbreviation* Modified and Unusual Amino Acid Aaa-C02R An amino acid ester, for examples Gly-C02Me is Glycine, methyl ester; D-Ala-C02Me is D-Alanine, methyl ester.
If the optical activity of the amino acid is other than L(S) , the amino acid or abbreviation is preceded by the appropriate configuration D(R) or DL(RS) . Abbreviation* Modified and Unusual Amino Arid (continued) Aaa-CONHR An amino acid amide, for examples: D-Ala-CONHEt is D-Alanine, N-ethyl amide; Trp-CONH2 is Tryptophanamide.
3Hyp 3-Hydroxyproline
4Hyp 4-Hydroxyproline
Hey Homocysteine
Nva Norvaline
Nle Norleucine
Orn Ornithine
Bal Beta-alanine (or 3-aminopropionic acid)
Abu 4-Aminob tyric acid Ahe 7-Aminoheptanoic acid Acp 6-Aminocaproic acid Aoc 8-Aminooctanoic acid Apn 5-Aminopentanoic acid Bpa (4-Benzoylphenyl)alanine Chx 3-Cyclohexylalanine (or
Hexahydrophenylalanine)
Cit Citrulline His(l-Me) 1-Methyl-histidine (or N(τ) -Methyl- histidine)
His(Tr) 1-Triphenylmethyl-histidine (or
N(τ) -Trityl-histidine) homoPhe 2-Amino-4-phenylbutanoic acid (or
Homophenylalanine) homoTyr 2-Amino-4- (4-hydroxyphenyl)butanoic acid (or Homotyrosine)
If the optical activity of the amino acid is other than L(S), the amino acid or abbreviation is preceded by the appropriate configuration D(R) or D (RS) . Abbreviation Modified and Unusual Amino Acid (continued) homoTyr(OBn) 2-Amino-4- [4- (phenylmethoxy)phenyl] - butanoic acid (or 0-Benzyl- homotyrosine) l-Nal 3- (1' -Naphthyl)alanine
2-Nal 3- (2' -Naphthyl)alanine
Pen Penicillamine
Phe(3-OBn) (3-Benzyloxyphenyl)alanine
Phe(4-Ph) 3- (1,l'Biphen-4-yl)alanine (or
4-Phenyl-phenylalanine)
Pgl Phenylglycine
Pyr 2-Amino-3- (3-pyridyl) -propanoic acid
(or 3-Pyridylalanine)
Ser(OBn) 0-Benzyl-serine
Thr(OBn) 0-Benzyl-threonine
Tic 1,2,3,4-Tetrahydro-3-isoquinoline- carboxylic acid
Tyr(OMe) 0-Methyl-tyrosine
Tyr(OEt) 0-Ethyl-tyrosine
Tyr(OBn) 0-Benzyl-tyrosine
(α-Me)Tyr(OBn) 2-Amino-3- (4-benzyloxyphenyl) -
2-methyl-propionic acid (or α-Methyl-0-benzyl-tyrosine) (N-Me)Tyr(OBn) N-Methyl-0-benzyl-tyrosine Trp(For) Nin-Formyltryptophan
Abbreviation Mercapto Acids
Maa Mercaptoacetic acid
Mba 4-Mercaptobutyric acid
Mpa 3-Mercaptopropionic acid
If the optical activity of the amino acid is other than L(S) , the amino acid or abbreviation is preceded by the appropriate configuration D'R) or DL(RS) . Abbreviation Protectinσ Group
Ac Acetyl
Ada 1-Adamantyl acetic acid
Adoc Adamantyloxycarbonyl
Bn Benzyl
MeBn 4-Methylbenzyl
Cbz Benzyloxycarbonyl
2-Br-Cbz ortho-Bromobenzyloxycarbonyl
2-Cl-Cbz ortho-Chiorobenzyloxycarbonyl
Bom Benzyloxymethyl
Boc tertiary Butyloxycarbonyl
Dnp 2,4-Dinitrophenyl
For For yl
Fmoc 9-Fluorenylmethyloxycarbonyl
N02 Nitro
Tos 4-Toluenesulfonyl (tosyl)
Tr Triphenylmethyl (trityl)
Abbreviation Solvents and Reaσents HOAc Acetic acid
CF3S02H Trifluoromethanesulfonic acid
DCM Dichloromethane
DCC N,N' -Dicyclohexylcarbodiimide
DIC N,N' -Diisopropylcarbodiimide DIEA N,N-Diisopropylethylamine
DMAP 4-Dimethylaminopyridine
DMF N,N' -Dimethylformamide
EDAC N-Ethyl-N' -Dimethylaminopropylcarbo- diimide EtOAc Ethyl acetate
Et20 Diethyl ether
HCl Hydrochloric acid
HF Hydrofluoric acid
HOBT 1-Hydroxybenzotriazole KOH Potassium hydroxide
MeCN Acetonitrile Abbreviation Solvents and Reagents (continued)
MeOH Methanol
NHOS N-Hydroxysuccinimide
NMP N-Methylpyrrolidone iPrOH iso-Propanol
TFA Trifluoroacetic acid
Abbreviation Solid Phase Peptide Svnthesis Resins HMP Resin 4- (Hydroxymethyl) -phenoxymethyl-poly styrene resin
MBHA Resin Methylbenzhydrylamine resin PAM Resin 4- (Hydroxymethyl) - phenylacetamidomethy1-polystyrene resin
2-Cl-Tr Resin 2-Chlorotrityl-polystyrene resin NH2-Rink Resin 4- (amino- (2' ,4' -dimethoxyphenyl) - methyl) -phenoxymethyl-polystyrene resin
Abbreviation Biological Reaσents
FPP Farnesyl pyrophosphate
PFT Protein:farnesyl transferase
DTT Dithiothreitol
BSA Bovine serum albumin
Abbreviation Miscellaneous COR2 0
-C ■R 22
CONHR**
CSR" S
-C IR 22 Abbreviation Miscellaneous (continued)
C(S)NHR2 S
-C llNHR 2 2
CONH2 0 -C IINH2
C0NHNH2 0 -C IINHNH2
CONHR2 0
-C llNHR2 2
Preferred compounds of the invention are designated by Formula II:
wherein n' = 1 or 2;
A' = -COR2', -C02R2', or -CONHR2', wherein R2' = alkyl, - (CH2)m-aryl, - (CH2)m- heteroaryl, and m = 0, 1, or 2; R = independently H or Me; Y = independently H or Me;
Z = independently H or Me;
R12'
or Me; ■SR12", wherein R12" - H or alkyl;
wherein R13' - H, -OH, -O-alkyl, alkyl, -CO-aryl, benzyl, -O-benzyl, wherein R13' is located at either the ortho, meta, or para position;
-OP03R1 2, -CH2P03R1 2, or -CF2P03R1 2, wherein R14 - H or alkyl; -COOR15, wherein R15 » H, Me, t-butyl, or benzyl;
R16 = -OR16', wherein R16' = H, benzyl, -P03R1 2, wherein R14 is as described above;
-CH2-R16", wherein R16" - -P03R14 2, wherein R14 is as described above; -SR16'", wherein R16'" ■= H or benzyl;
C = Ala, Trp, Trp(Me), or Trp(CHO);
D' = Gly, Ala, or absent;
E' = -COOMe, -CONH2, -CONHNH2, -COOH or -CONH-alkyl; an isomer or a pharmaceutically acceptable salt thereof. Other preferred compounds of the present invention are those of Formula I as defined above wherein A is
Cbz, BnNHCO, R is H and n is 1 or 2; or as defined above wherein R4 is
or as defined above wherein wherein R5 is
wherein R5' is H, -OH, -OBn, -OP03H2, -CH2P03H2, -CH2P03Et2, -CF2P03H2, or wherein R5 = -COOH, and Z is H; or as defined above wherein R6 is -OBn, -OH, -SH, or -OP03H2; or as defined above wherein C is Trp or Ala; or as defined above wherein D is Ala, Gly, or absent; or as defined above wherein E is -COOH, -C0NH2, -COOMe, -CONHEt, -CONHNH2, or -CONHMe.
Most preferred compounds of the invention include the following:
Cbz -His -Tyr (OBn -Ser(OBn) -Trp-D-Ala-CONH2; Cbz - His -Tyr (OBn -Ser(OBn) -Trp-D-Ala-CONHMe; Cbz -His - Tyr (OBn -Ser(OBn) -Trp-D-Ala-CONHEt; Cbz -His -Tyr (OBn -Ser(OBn) -Trp-D-Ala-CONHNH2; CCbbzz- -HHiiss- -TTyyrr((OOBBnn) -Ser(OBn) -Trp-D-Ala-C02Me; Cbz ■ His • Tyr (OBn -Ser(OBn) -Trp-D-Ala; Cbz - His ■ Tyr (OBn -Ser(OBn) -Trp-Ala-CONH2; Cbz -His ■Tyr (OBn -Ser(OBn) -Trp-Ala-CONHMe; Cbz - His ■Tyr (OBn -Ser(OBn) -Trp-Ala-CONHE ; Cbz - His ■ Tyr (OBn -Ser(OBn) -Trp-Ala-CONHNH2; Cbz - His ■ Tyr (OBn -Ser(OBn) -Trp-Ala-C02Me; Cbz - His • Tyr (OBn -Ser(OBn) -Trp-Ala; Cbz - His • Tyr (OBn -Ser(OBn) -Trp-Gly-CONH2; Cbz • His ■Tyr (OBn -Ser(OBn) -Trp-Gly-CONHMe; Cbz ■ His ■ Tyr (OBn -Ser(OBn) -Trp-Gly-CONHEt; Cbz • His ■Tyr ( OBn -Ser(OBn) -Trp-Gly-CONHNH2; Cbz •His ■Tyr (OBn -Ser(OBn) -Trp-Gly-C02Me; Cbz •His • Tyr (OBn -Ser(OBn) -Trp-Gly; Cbz •His •Tyr- Ser [OBn) -Trp-D-Ala-CONH2; CCbbzz-HHiiss- ■TTyyrr((OOBBnn) -Ser-Trp-D-Ala-CONH2; Cbz ■ His Phe - Ser (OBn) -Trp-D-Ala-CONH2; Cbz ■His Phe - Ser(OBn) -Trp-Ala-CONH2; Cbz •His ■Tyr ( OBn -Ser(OBn) -Ala-D-Ala-CONH2; Cbz-D-His-Tyr(OBn) -Ser(OBn) -Trp-D-Ala-CONH2; Cbz-His-D-Tyr(OBn) -Ser(OBn) -Trp-D-Ala-CONH2;
Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-C02Me; Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-CONH2; Cbz-His-Tyr(OBn) -Ser(OBn) -D-Ala-C02Me; Cbz-His-Tyr(OBn) -Ser(OBn) -D-Ala; Cbz-D-His-Tyr(OBn) -Ser(OBn) -Trp-C02Me;
Cbz-His-D-Tyr(OBn) -Ser(OBn) -Trp-C02Me; Cbz-His-Tyr (OBn) -Cys-Trp-CONH2;
BnNHCO-His-Tyr(OBn -Cys-Trp-CONH2; BnNHCO-His-Tyr(OBn -Ser(OBn -Trp-D-Ala-CONH2; BnNHCO-His-Tyr (OBn -Ser (OBn -Trp-D-Al -CONHMe;; BnNHCO-His-Tyr (OBn -Ser (OBn -Trp-D-Ala-CONHEt; BnNHCO-His-Tyr (OBn -Ser(OBn -Trp-D-Ala-CONHNH2; BnNHCO-His-Tyr(OBn -Ser(OBn -Trp-D-Ala-C02Me; BnNHCO-His-Tyr (OBn -Ser(OBn -Trp-D-Ala; BnNHCO-His-Tyr (OBn -Ser (OBn -Trp-Ala-CONH2; BnNHCO-His-Tyr(OBn -Ser(OBn -Trp-Ala-CONHMe; BnNHCO-His-Tyr{OBn -Ser(OBn -Trp-Ala-CONHEt; BnNHCO-His-Tyr(OBn -Ser(OBn -Trp-Ala-CONHNH2; BnNHCO-His-Tyr(OBn -Ser(OB -Trp-Ala-C02Me; BnNHCO-His-Tyr(OBn -Ser(OBn -Trp-Ala; BnNHCO-His-Tyr(OBn -Ser(OBn -Trp-Gly-CONH2; BnNHCO-His-Tyr (OBn -Ser(OBn -Trp-Gly-CONHMe; BnNHCO-His-Tyr (OBn -Ser(OBn -Trp-Gly-CONHEt; BnNHCO-His-Tyr(OBn -Ser(OBn -Trp-Gly-CONHNH2; BnNHCO-His-Tyr(OBn -Ser (OBn -Trp-Gly-C02Me; BnNHCO-His-Tyr (OBn -Ser(OBn -Trp-Gly; Cbz-His-Tyr (OBn -Cys-Trp-D-Ala-CONH2; Cbz-His-Tyr (OBn -Cys-Trp-D-Ala-CONHMe; Cbz-His-Tyr(OBn -Cys-Trp-D-Ala-CONHEt; Cbz-His-Tyr (OBn -Cys-Trp-D-Ala-CONHNH2,* Cbz-His-Tyr (OBn -Cys-Trp-D-Ala-C02Me; Cbz-His-Tyr(OBn -Cys-Trp-D-Ala; Cbz-His-Tyr(OBn -Cys-Trp-Ala-CONH2; Cbz-His-Tyr(OBn -Cys-Trp-Ala-CONHMe; Cbz-His-Tyr(OBn -Cys-Trp-Ala-CONHEt; Cbz-His-Tyr (OBn -Cys-Trp-Ala-CONHNH2; Cbz-His-Tyr(OBn -Cys-Trp-Ala-C02Me; Cbz-His-Tyr (OBn -Cys-Trp-Ala; Cbz-His-Tyr (OBn -Cys-Trp-Gly-CONH2; Cbz-His-Tyr (OBn -Cys-Trp-Gly-CONHMe; Cbz-His-Tyr (OBn -Cys-Trp-Gly-CONHEt; Cbz-His-Tyr (OBn -Cys-Trp-Gly-CONHNH2; Cbz-His-Tyr(OBn) -Cys-Trp-Gly-C02Me;
Cbz-His-Tyr(OBn) -Cys-Trp-Gly;
BnNHCO-His-Tyr(OBn) -Cys-Trp-D-Ala-CONH2;
BnNHCO-His-Tyr(OBn) -Cys-Trp-D-Ala-CONHMe; BnNHCO-His-Tyr(OBn) -Cys-Trp-D-Ala-CONHEt;
BnNHCO-His-Tyr(OBn) -Cys-Trp-D-Ala-CONHNH2;
BnNHCO-His-Tyr(OBn) -Cys-Trp-D-Ala-C02Me;
BnNHCO-His-Tyr(OBn) -Cys-Trp-D-Ala;
BnNHCO-His-Tyr(OBn) -Cys-Trp-Ala-CONH2; BnNHCO-His-Tyr(OBn) -Cys-Trp-Ala-CONHMe,•
BnNHCO-His-Tyr(OBn) -Cys-Trp-Ala-CONHEt;
BnNHCO-His-Tyr(OBn) -Cys-Trp-Ala-CONHNH2;
BnNHCO-His-Tyr(OBn) -Cys-Trp-Ala-C02Me;
BnNHCO-His-Tyr(OBn) -Cys-Trp-Ala; BnNHCO-His-Tyr(OBn) -Cys-Trp-Gly-CONH2;
BnNHCO-His-Tyr(OBn) -Cys-Trp-Gly-CONHMe;
BnNHCO-His-Tyr(OBn) -Cys-Trp-Gly-CONHEt;
BnNHCO-His-Tyr(OBn) -Cys-Trp-Gly-CONHNH2;
BnNHCO-His-Tyr(OBn) -Cys-Trp-Gly-C02Me; BnNHCO-His-Tyr(OBn) -Cys-Trp-Gly;
Cbz-Cys-Tyr(OBn) -Ser(OBn) -Trp-DAla-CONH2;
Cbz-His-Tyr(OP03H2) -Ser(OBn) -Trp-DAla-CONH2;
Cbz-His-p(CH2P03H2)Phe-Ser(OBn) -Trp-DAla-CONH2;
Cbz-His-p(CH2P03Et2)Phe-Ser(OBn) -Trp-DAla-CONH2; Cbz-His-p(CF2P03H2)Phe-Ser(OBn) -Trp-DAla-CONH2;
Cbz-His-Glu-Ser(OBn) -Trp-DAla-CONH2;
Cbz-His-Asp-Ser(OBn) -Trp-DAla-CONH2;
Cbz-His-Tyr(OBn) -Ser(OP03H2) -Trp-DAl -CONH2;
Cbz-His-Tyr(OP03H2) -Cys-Trp-DAla-CONH2; and Cbz-His-Tyr(OP03H2) -Ser(OBn) -Trp-CONH2. GENERAL METHODS FOR THE PREPARATION, EVALUATION AND USE OF COMPOUNDS OF FORMULA I
The compounds of Formula I may be prepared by solid phase peptide synthesis on a peptide synthesizer, for example, an Applied Biosystems 430A peptide synthesizer using activated esters or anhydrides of Boc or Fmoc protected amino acids, acid chlorides, isocyanates, isothiocyanates, etc, on PAM, MBHA, or NH2-Rink resins with solution phase modifications to the carboxyl terminus as appropriate. Methodology for the solid phase synthesis of peptides is widely known to those skilled in the art thereof (see, for example: J. M. Stewart and J. D. Young in Solid Phase Peptide Synthesis: Pierce Chemical Co.; Rockford, IL (1984); G. B. Fields and R. L. Noble, Int. J. Peptide Protein Res. 35. 161-214 (1990)). Additionally, the compounds of Formula I may also be prepared by conventional solution peptide synthesis, substituting amines, acid chlorides, isocyanates, etc, for amino acid derivatives where appropriate. Methods for solution phase synthesis of peptides are widely known to those skilled in the art (see, for example, M. Bodanszky, Principles of Peptide Svnthesis. Springer-Verlag (1984)). For both of the synthetic methods described above appropriate consideration is given to protection and deprotection of reactive functional groups and to the sequence of synthetic steps. Knowledge of the use of common protecting groups and strategy for the assembly of complex organic molecules are within the usual realm of expertise of a practitioner of the art of organic chemistry (see, for example: T. W. Greene and P. G. M Wuts, Protective Groups in Organic Chemistry. John Wiley and Sons (1991); E. J. Corey and X.-M. Cheng, The Logic of Chemical Synthesis. John Wiley and Sons (1989) ) . The homogeneity and composition of the resulting compounds is verified by RP-HPLC, capillary electrophoresis, thin layer chromatography (TLC), proton nuclear magnetic resonance spectrometry (NMR) , amino acid analysis, chemical ionization mass spectrometry (CI-MS) , fast atom bombardment mass spectrometry (FAB-MS) and electrospray mass spectrometry (ES-MS) .
The compounds of Formula I are capable of further forming both pharmaceutically acceptable acid addition and/or base salts. All of these forms are within the scope of the present invention.
Pharmaceutically acceptable acid addition salts of the compounds of Formula I include salts derived from nontoxic inorganic acids such as hydrochloric, nitric, phosphoric, sulfuric, hydrobromic, hydroiodic, hydrofluoric, phosphorous, and the like, as well as the salts derived from nontoxic organic acids, such as aliphatic mono- and dicarboxylic acids, phenyl-substituted alkanoic acids, hydroxy alkanoic acids, alkanedioic acids, aromatic acids, aliphatic and aromatic sulfonic acids, etc. Such salts thus include sulfate, pyrosulfate, bisulfate, sulfite, bisulfite, nitrate, phosphate, monohydrogenphosphate, dihydrogenphosphate, metaphosphate, pyrophosphate, chloride, bromide, iodide, acetate, trifluoroacetate, propionate, caprylate, isobutyrate, oxalate, malonate, succinate, suberate, sebacate, fumarate, maleate, mandelate, benzoate, chlorobenzoate, methylbenzoate, dinitrobenzoate, phthalate, benzenesulfonate, toluenesulfonate, phenylacetate, citrate, lactate, maleate, tartrate, methanesulfonate, and the like. Also contemplated are salts of amino acids such as arginate and the like and gluconate, galacturonate, n-methyl glucamine (see, for example, S. M. Berge, et al., "Pharmaceutical Salts," Journal of Pharmaceutical Ssi≤nC≤ ££, 1-19 (1977)).
The acid addition salts of said basic compounds are prepared by contacting the free base form with a sufficient amount of the desired acid to produce the salt in the conventional manner. Preferably a compound of Formula I can be converted to an acidic salt by treating with an aqueous solution of the desired acid, such that the resulting pH is less than 4. The solution can be passed through a C18 cartridge to absorb the compound, washed with copious amounts of water, the compound eluted with a polar organic solvent such as, for example, methanol, acetonitrile, and the like, and isolated by concentrating under reduced pressure followed by lyophilization. The free base form may be regenerated by contacting the salt form with a base and isolating the free base in the conventional manner or as above. The free base forms differ from their respective salt forms somewhat in certain physical properties such as solubility in polar solvents, but otherwise the salts are equivalent to their respective free base for purposes of the present invention.
Pharmaceutically acceptable base addition salts are formed with metals or amines, such as alkali and alkaline earth metals or organic amines. Examples of metals used as cations are sodium, potassium, magnesium, calcium, and the like. Examples of suitable amines are N,N' -dibenzylethylenediamine, chloroprocaine, choline, diethanolamine, dicyclohexylamine, ethylenediamine, N-methylglucamine, and procaine (see, for example, S. M. Berge, et al., "Pharmaceutical Salts", Journal of Pharmaceutical Science 66. 1-19 (1977)). The base addition salts of said acidic compounds are prepared by contacting the free acid form with a sufficient amount of the desired base to produce the salt in the conventional manner. Preferably, a compound of Formula I can be converted to a base salt by treating with an aqueous solution of the desired base, such that the resulting pH is greater than 9.
The solution can be passed through a C18 cartridge to absorb the compound, washed with copious amounts of water, the compound eluted with a polar organic solvent such as, for example, methanol, acetonitrile and the like, and isolated by concentrating under reduced pressure followed by lyophilization. The free acid form may be regenerated by contacting the salt form with an acid and isolating the free acid in the conventional manner or as above. The free acid forms differ from their respective salt forms somewhat in certain physical properties such as solubility in polar solvents, but otherwise the salts are equivalent to their respective free acid for purposes of the present invention. Certain of the compounds of the present invention can exist in unsolvated forms as well as solvated forms, including hydrated forms. In general, the solvated forms, including hydrated forms, are equivalent to unsolvated forms and are intended to be encompassed within the scope of the present invention. Certain of the compounds of the present invention possess one or more chiral centers and each center may exist in the R(D) or S(L) configuration. The present invention includes all enantiomeric and epimeric forms as well as the appropriate mixtures thereof.
The PFT inhibitory activity of compounds of Formula I was assayed in 30 mM potassium phosphate buffer, pH 7.4, containing 7 mM DTT, 1.2 mM MgCl2, 0.1 mM leupeptin, 0.1 mM pepstatin, and 0.2 mM phenylmethylsulfonyl fluoride. Assays were performed in 96 well plates (Wallec) and employed solutions composed of varying concentrations of a compound of Formula I in 100% DMSO. Upon addition of both substrates, radiolabeled farnesyl pyrophosphate ( [1-3H] , specific activity 15-30 Ci/mmol, final concentration 0.12 μM) and (biotinyl) -Ahe-Tyr-Lys-Cys- Val-Ile-Met peptide (final concentration 0.1 μM) , the enzyme reaction was started by addition of 40-fold purified rat brain farnesyl protein transferase. After incubation at 37°C for 30 minutes, the reaction was terminated by diluting the reaction 2.5-fold with a stop buffer containing 1.5 M magnesium acetate, 0.2 M H3P04, 0.5% BSA, and strepavidin beads (Amersham) at a concentration of 1.3 mg/mL. After allowing the plate to settle for 30 minutes at room temperature, radioactivity was quantitated on a microBeta counter (model 1450, Wallec) .
As shown below in Table I, compounds of Formula I show IC50 values of 0.5 to 1000 nM in the assay discussed above and are thus valuable inhibitors of protein*,farnesyl transferase enzyme which may be used in the medical treatment of tissue proliferative diseases, including cancer and restenosis.
TABLE I
Peptide IC50 (μl
Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-DAla-CONH2 0 . 017 Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-DAla-CONHEt 0 . 230 Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-DAla-CONHNH2 0 . 062 Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-DAla-C02Me 0 , . 019 Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-DAla-COOH 0 , . 048 Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-Ala-NH2 0 . . 015 Cbz-His-Tyr-Ser(OBn) -Trp-DAla-NH2 0 . . 040 Cbz-His-Tyr(OB ) -Ser-Trp-DAla- H2 1 . . 8 Cbz-His-Phe-Ser(OBn) -Trp-DAla-NH2 0 . . 010 Cbz-His-Tyr(OBn) -Ser(OBn) -Ala-DAla-NH2 0 . . 33 Cbz-DHis-Tyr(OBn) -Ser(OBn) -Trp-DAla-NH2 0 . . 12 Cbz-His-DTyr(OBn) -Ser(OBn) -Trp-DAla-NH2 0 . , 039 Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-C02Me 0 . , 115 Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-NH2 0 . 083 Cbz-His-Tyr(OBn) -Ser(OBn) -DAla-C02Me 0 . , 142 Cbz-His-Tyr(OBn) -Ser(OBn) -DAla-COOH 0 . 404 Cbz-His-Tyr(OBn) -Cys-Trp-DAla-NH2 0 . 004 Cbz-His-Tyr(OPQ3H2) -Ser(OBn) -Trp-DAla-NH2 0 . 009
The compounds of the present invention can be prepared and administered in a wide variety of oral, rectal, and parenteral dosage forms. Thus, the compounds of the present invention can be administered by injection, that is, intravenously, intramuscularly, intracutaneously, subcutaneously, intraduodenally, or intraperitoneally. Also, the compounds of the present invention can be administered by inhalation, for example, intranasally. Additionally, the compounds of the present invention can be administered transdermally. It will be obvious to those skilled in the art that the following dosage forms may comprise as the active component, either a compound of Formula I or a corresponding pharmaceutically acceptable salt of a compound of Formula I. For preparing pharmaceutical compositions from the compounds of the present invention, pharmaceutically acceptable carriers can be either solid or liquid. Solid form preparations include powders, tablets, pills, capsules, cachets, suppositories, and dispersible granules. A solid carrier can be one or more substances which may also act as diluents, flavoring agents, binders, preservatives, tablet disintegrating agents, or an encapsulating material. In powders, the carrier is a finely divided solid which is in a mixture with the finely divided active component.
In tablets, the active component is mixed with the carrier having the necessary binding properties in suitable proportions and compacted in the shape and size desired.
The powders and tablets preferably contain from 5 or 10 to about 70 percent of the active compound. Suitable carriers are magnesium carbonate, magnesium stearate, talc, sugar, lactose, pectin, dextrin, starch, gelatin, tragacanth, methylcellulose, sodium carboxymethylcellulose, a low melting wax, cocoa butter, and the like. The term "preparation" is intended to include the formulation of the active compound with encapsulating material as a carrier providing a capsule in which the active component with or without other carriers, is surrounded by a carrier, which is thus in association with it. Similarly, cachets and lozenges are included. Tablets, powders, capsules, pills, cachets, and lozenges can be used as solid dosage forms suitable for oral administration. For preparing suppositories, a low melting wax, such as a mixture of fatty acid glycerides or cocoa butter, is first melted and the active component is dispersed homogeneously therein, as by stirring. The molten homogenous mixture is then poured into convenient sized molds, allowed to cool, and thereby to solidify.
Liquid form preparations include solutions, suspensions, and emulsions, for example, water or water propylene glycol solutions. For parenteral injection liquid preparations can be formulated in solution in aqueous polyethylene glycol solution.
Aqueous solutions suitable for oral use can be prepared by dissolving the active component in water and adding suitable colorants, flavors, stabilizing and thickening agents as desired.
Aqueous suspensions suitable for oral use can be made by dispersing the finely divided active component in water with viscous material, such as natural or synthetic gums, resins, methylcellulose, sodium carboxymethylcellulose, and other well-known suspending agents.
Also included are solid form preparations which are intended to be converted, shortly before use, to liquid form preparations for oral administration. Such liquid forms include solutions, suspensions, and emulsions. These preparations may contain, in addition to the active component, colorants, flavors, stabilizers, buffers, artificial and natural sweeteners, dispersants, thickeners, solubilizing agents, and the like.
The pharmaceutical preparation is preferably in unit dosage form. In such form, the preparation is subdivided into unit doses containing appropriate quantities of the active component. The unit dosage form can be a packaged preparation, the package containing discrete quantities of preparation, such as packeted tablets, capsules, and powders in vials or ampoules. Also, the unit dosage form can be a capsule, tablet, cachet, or lozenge itself, or it can be the appropriate number of any of these in packaged form. The quantity of active component in a unit dose preparation may be varied or adjusted from 0.1 mg to 100 mg preferably 0.5 mg to 100 mg according to the particular application and the potency of the active component. The composition can, if desired, also contain other compatible therapeutic agents.
In therapeutic use as inhibitors of PFT, the compounds utilized in the pharmaceutical methods of this invention are administered at the initial dosage of about 0.01 mg/kg to about 20 mg/kg daily. A daily dose range of about 0.01 mg/kg to about 10 mg/kg is preferred. The dosages, however, may be varied depending upon the requirements of the patient, the severity of the condition being treated, and the compound being employed. Determination of the proper dosage for a particular situation is within the skill of the art. Generally, treatment is initiated with smaller dosages which are less than the optimum dose of the compound. Thereafter, the dosage is increased by small increments until the optimum effect under the circumstances is reached. For convenience, the total daily dosage may be divided and administered in portions during the day, if desired.
The following nonlimiting examples illustrate the inventors' preferred methods for preparing the compounds of the invention. For added clarity, complex chemical names describing compounds of Formula I are followed by structural abbreviations, which are shown in braces, wherein the structural elements are as defined in the Table of Abbreviations above.
EXAMPLE 1 N- fN- ΓN- IN- f (Phenylmethoxy)carbonyll -L-histidyll -0- (phenylmethyl) -L-tvrosvll -0- (phenvl ethvl) -L-servll -p- alanine. methvl ester -fCbz-His-Tvr(OBn) -Ser(OBn) -D-Ala- CO-Me ) Step 1: Boc-Ser(OBn) -D-Ala-CO^Me
To a solution of Boc-Ser(OBn) (4.12 g, 13.95 mmol) in EtOAc (100 mL) at 0*C was added HOBT (2.35 g, 15.35 mmol) and DCC (3.17 g, 15.35 mmol). D-Alanine methyl ester hydrochloride (1.95 g, 13.95 mmol) was added followed by Et3N (2.14 mL, 15.35 mmol). The mixture was allowed to warm to room temperature and stirred overnight. The mixture was filtered, and the filtrate was washed with saturated aqueous NaHC03, brine, dried (MgS04) , and concentrated. Flash chromatography (40% EtOAc/hexane) gave 2.60 g of the title compound as a colorless oil; CI-MS 381 (m+1) .
Step 2: Ser(OBn) -D-Ala-CO=Me*TFA To a solution of Boc-Ser(OBn) -D-Ala-C02Me from
Step 1 above (2.44 g, 6.41 mmol) in CH2C12 (10 mL) was added TFA (3 mL) . The solution was stirred for 6 hours at room temperature, then concentrated. The residue was taken up in CH2C12 and reconcentrated. After trituration with ether, the title compound was obtained as a white solid, mp 109-110°C.
Step 3: Boc-Tyr(OBn) -Ser(OBn) -D-Ala-CQ=Me
To a solution of Boc-Tyr(OBn) (0.94 g, 2.54 mmol) in DMF (10 mL) at 0°C was added HOBT (0.47 g,
3.04 mmol) and DCC (0.63 g, 3.04 mmol). Ser(OBn) -D- Ala-C02Me*TFA from Step 2 above (1.0 g, 2.54 mmol) was added followed by Et3N (0.42 mL, 3.04 mmol). The mixture was allowed to warm to room temperature and stirred overnight. The mixture was filtered, and the filtrate was diluted with CHC13, washed twice with saturated aqueous NaHC03, brine, dried (MgS04) , and concentrated. Flash chromatography (50% EtOAc/hexane) gave 1.35 g of the title compound as a white solid, mp 132-133°C; CI-MS 634 (m+1). Step 4: Tyr(OBn) -Ser(OBn) -D-Ala-CO.Me-TFA
Prepared according to Step 2 above, substituting Boc-Tyr(OBn) -Ser(OBn) -D-Ala-C02Me for Boc-Ser(OBn) -D- Ala-C02Me. The title compound was obtained as a white solid; CI-MS 534 (m+1) .
Step 5: Cbz-His-Tyr(OBn) -Ser(OBn) -D-Ala-CQ2Me
Prepared according to Step 3 above, by substituting Cbz-His for Boc-Tyr(OBn) and Tyr(OBn)- Ser(OBn) -D-Ala-C02Me*TFA for Ser(OBn) -D-Ala-C02Me*TFA. The title compound was obtained as a white solid, mp 188-191°C. Anal. Calc. for C44H48N609*H20:
C, 64.22; H, 6.12; N, 10.21; Found: C, 64.15; H, 5.99; N, 10.17.
EXAMPLE 2 N- TN- fN- fN- r (Phenylmethoxy)carbonyll -L-histidyll -O- (phenylmethyl) -L-tyrosyll -0- (phenylmethyl) -L-seryll -D- alanine. monohydrochloride {Cbz-His-Tyr(OBn) -Ser(OBn) - D-Ala*HCl)
To a suspension of Cbz-His-Tyr(OBn) -Ser(OBn) -D- Ala-C02Me from Example 1 above (0.43 g, 0.53 mmol) in THF (10 mL) and MeOH (3 mL) at 0°C was added 0.1N LiOH (5.9 mL) . The mixture was stirred for 6 hours at 0*C and then concentrated. Water was added and the pH was adjusted to 4-5 by the addition of IN HCl. The mixture was filtered, and the precipitate was collected and dried to afford 0.37 g of the title compound as a white solid, mp 190-197°C; FAB-MS 791 (m+1) . EXAMPLE 3 N- TN- TN- TN- r(Phenvlmethoxv)carbonvll -L-hiatidvll -O- ( henylmethyl) -L-tvrosvll -O- (phenvlmethvli -L-seryll -L- tryptophan. methvl ester (Cbz-His-Tvr(OBn) -Ser(OBn) -
Step 1: Boc-Tvr(OBn) -Ser(OBn) -CO.Me
To a solution of Boc-Tyr(OBn) (1.88 g, 6.50 mmol) in EtOAc (30 mL) at 0*C was added HOBT hydrate (1.19 g, 7.80 mmol) followed by DCC (1.61 g, 7.80 mmol). A solution of Ser(OBn) -C02Me*TFA (2.1 g, 6.50 mmol) in EtOAc (20 mL) was added followed by Et3N (1.09 mL, 7.80 mmol) . The mixture was allowed to warm to room temperature and stirred overnight. The mixture was filtered, diluted with EtOAc, and washed twice with saturated aqueous NaHC03, brine, dried over MgS04, and concentrated. Flash chromatography (40% EtOAc/hexane) gave 2.67 g (73%) of the title compound as a white solid, mp 81-84°C.
Step 2: Boc-Tyr(OBn) -Ser(OBn)
Prepared according to Example 2, by substituting
Boc-Tyr(OBn) -Ser(OBn) -C02Me for Cbz-His-Tyr(OBn) -
Ser(OBn) -D-Ala-C02Me. The title compound was obtained as a white foam.
Step 3: Boc-Tyr(OBn) -Ser(OBn) -Trp-CQ2Me
Prepared according to Example l, Step 3, by substituting Boc-Tyr(OBn) -Ser(OBn) for Boc-Tyr(OBn) and
Trp-C02Me*HCl for Ser(OBn) -D-Ala-C02Me*TFA. The title compound was obtained as a white foam; FAB-MS 750
(m+1) .
Step 4: Tyr(OBn) -Ser(OBn) -Trp-CO^Me•TFA
Prepared according to Example 1, Step 2, by substituting Boc-Tyr(OBn) -Ser(OBn) -Trp-C02Me for Boc-
Ser(OBn) -D-Ala-C02Me, and adding 2 equiv of thioanisole in addition to TFA. The title compound was obtained as white solid.
Step 5: Cbz-His-Tvr(OBn) -Ser(OBn) -Trp-CO.Me Prepared according to Example 1, Step 5, by substituting Tyr(OBn) -Ser(OBn) -Trp-C02Me*TFA for Tyr(OBn) -Ser(OBn) -D-Ala-C02Me*TFA. The title compound was obtained as a white foam; FAB-MS 920 (m+1) .
EXAMPLE 4
Nα- fN- fN- fN- TN- f (Phenylmethoxv)carbonyl! -L-histidyll -O- (phenvlmethyl) -L-tvrosvll -O- (phenylmethyl) -L-seryll -L- trvptophvll -D-alaninamide -fCbz-His-Tvr(OBn) -Ser(OBn) - Trp-D-Ala-CONH ) Using an ABI model 431A solid phase peptide synthesizer, Fmoc-NH-Rink resin (0.25 mMol scale) was treated with 20% piperidine in NMP to afford NH2-Rink resin. Sequential coupling of Fmoc-protected D-Ala, Trp, Ser(OBn) and Tyr(OBn) (DCC and HOBT in NMP) and Fmoc deprotection (20% piperidine in NMP) reactions were run using a fourfold excess of reagents in the coupling steps and traditional resin washing cycles to afford Tyr(OBn) -Ser(OBn) -Trp-D-Ala-CONH-Rink resin. This tetrapeptide resin was transferred to an uninstrumented reaction vessel and treated with a fourfold excess of Cbz-His, DCC and HOBT in DMF, shaking overnight at room temperature. After removal of excess reagents, the resulting substituted pentapeptide was cleaved from the resin by treatment with 50% TFA in DCM at room temperature for 2.5 hours. Evaporation of solvents, lyophilization and purification by reversed phase chromatography (C18-column, eluted with a 20-70% gradient of MeCN in water (both solvents acidified with 0.1% TFA)) afforded Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-D-Ala-CONH2 as its TFA salt upon lyophilization. FAB-MS: 976 (m+1) . Using analogous methods the following most preferred compounds of Formula I with carboxamides at the C-terminus may be prepared:
Cbz-His-Tyr (OBn) -Ser(OBn) -Trp-Ala-CONH2, ES-MS 976 (m+1);
Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-Gly-CONH2;
Cbz-His-Tyr-Ser(OBn) -Trp-D-Ala-CONH2, FAB-MS 886 (m+1) ;
Cbz-His-D-Tyr(OBn) -Ser(OBn) -Trp-D-Ala-CONH2, FAB- MS 976 (m+1) ;
Cbz-His-Phe-Ser(OBn) -Trp-D-Ala-CONH2, ES-MS 870 (m+1) ;
Cbz-His-Tyr (OBn) -Ser-Trp-D-Ala-CONH2, FAB-MS 886 (m+1) ; Cbz-D-His-Tyr(OBn) -Ser(OBn) -Trp-D-Ala-CONH2, FAB-
MS 976 (m+1) ;
Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-CONH2, ES-MS 905 (m+1) ;
Cbz-His-Tyr (OBn) -Ser(OBn) -Ala-D-Ala-CONH2, ES-MS 861 (m+1) ;
Cbz-His-Phe-Ser(OBn)-Trp-Ala-CONH2; ES-MS 870 (m+1) ;
BnNHCO-His-Tyr(OBn) -Ser(OBn) -Trp-Gly-CONH2;
BnNHCO-His-Tyr(OBn) -Ser(OBn) -Trp-D-Ala-CONH2; BnNHCO-His-Tyr(OBn) -Ser(OBn) -Trp-Ala-CONH2;
Cbz-His-Tyr(OP03H2) -Ser(OBn) -Trp-DAla-CONH2, ES-MS 966 (m+1) ;
Cbz-His-p(CH2P03H2)Phe-Ser(OBn) -Trp-DAla-CONH2;
Cbz-His-p(CH2P03Et2)Phe-Ser(OBn) -Trp-DAla-CONH2, ES-MS 1021 (m+1) ;
Cbz-His-p(CF2P03H2)Phe-Ser(OBn) -Trp-DAla-CONH2;
Cbz-His-Glu-Ser(OBn) -Trp-DAla-CONH2, ES-MS 852.3 (m+1) ;
Cbz-His-Asp-Ser(OBn) -Trp-DAla-CONH2, ES-MS 838.6 (m+1) ; Cbz-His-Tyr(OBn) -Ser(OP03H2) -Trp-DAla-CONH2, FAB-MS 966.2 (m+1); and
Cbz-His-Tyr(OP03H2) -Ser(OBn) -Trp-CONH2, ES-MS 895.5 (m+1) .
EXAMPLE 5 Ng- fN- fN- fN- fN- f (Phenylmethoxv)carbonyl! -L-histidyll -0- ( henylmethyl) -L-tvrosvll -L-cvsteinvl-L-tryptophyl! -D- alaninamide (Cbz-His-Tvr(OBn) -Cvs-Trp-D-Ala-CONH.,} Sequential coupling and deprotection of Fmoc- protected D-Ala, Trp, Cys(STr) , Tyr(OBn) and Cbz-His by the solid phase method described in Example 4, followed by treatment with 60% TFA in DCM for 3.5 hours at room temperature gave crude Cbz-His-Tyr(OBn) -Cys-Trp-D-Ala- CONH2 upon evaporation of solvents and lyophilization. Purification was accomplished by reversed phase chromatography on a C18 column, eluted with a 25 to 75% gradient of MeCN in water (both solvents acidified with 0.1% TFA) to give the TFA salt of the title compound upon lyophilization. ES-MS: 902 (m+1).
Using analogous methods the following most preferred compounds of Formula I which contain Cys and a carboxamide at the C-terminus may be prepared: Cbz-His-Tyr(OBn) -Cys-Trp-Ala-CONH2; Cbz-His-Tyr(OBn) -Cys-Trp-Gly-CONH2;
BnNHCO-His-Tyr(OBn) -Cys-Trp-D-Ala-CONH2; BnNHCO-His-Tyr(OBn) -Cys-Trp-Ala-CONH2; BnNHCO-His-Tyr(OBn) -Cys-Trp-Gly-CONH2; Cbz-Cys-Tyr(OBn) -Ser(OBn) -Trp-DAla-CONH2, FAB-MS 942.6 (m+1); and
Cbz-His-Tyr(OP03H2) -Cys-Trp-DAla-CONH2.
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
SEQUENCE LISTING
(1) GENERAL INFORMATION:
(i) APPLICANT: Warner-Lambert Company
(11) TITLE OF INVENTION: Substituted Tetra- and Pentapeptide Inhibitors of Protein: Farnesyl Transferase
(iii) NUMBER OF SEQUENCES: 59
(iv) CORRESPONDENCE ADDRESS:
(A) ADDRESSEE: Warner-Lambert Company
(B) STREET: 2800 Plymouth Rd.
(C) CITY: Ann Arbor
(D) STATE: MI
(E) COUNTRY: US
(F) ZIP: 48105
(V) COMPUTER READABLE FORM:
(A) MEDIUM TYPE: Floppy disk
(B) COMPUTER: IBM PC compatible
(C) OPERATING SYSTEM: PC-DOS/MS-DOS
(D) SOFTWARE: Patentin Release 1.0,Ver. 1.25
(Vi) CURRENT APPLICATION DATA:
(A) APPLICATION NUMBER:
(B) FILING DATE:
(C) CLASSIFICATION:
(viii) ATTORNEY/AGENT INFORMATION:
(A) NAME: Crissey, Todd
(B) REGISTRATION NUMBER: 37807
(C) REFERENCE/DOCKET NUMBER: PD-4631PCT
(ix) TELECOMMUNICATION INFORMATION:
(A) TELEPHONE: 313 996-7530
(B) TELEFAX: 313 996-1553 (2) INFORMATION FOR SEQ ID NO:l:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 4 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:l:
Cys Xaa Xaa Xaa
1
(2) INFORMATION FOR SEQ ID NO:2:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 4 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:2:
Cys Xaa Xaa Xaa
1
(2) INFORMATION FOR SEQ ID NO:3:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 4 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:3:
Cys Xaa Xaa Xaa
1 (2) INFORMATION FOR SEQ ID NO:4:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 4 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:4:
Cys Xaa Xaa Xaa
1
(2) INFORMATION FOR SEQ ID NO:5:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:5:
His Xaa Xaa Trp Ala
1 5
(2) INFORMATION FOR SEQ ID NO:6:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:6:
His Xaa Xaa Trp Ala 1 5 (2) INFORMATION FOR SEQ ID NO:7:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:7:
His Xaa Xaa Trp Ala
1 5
(2) INFORMATION FOR SEQ ID NO: 8:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:8:
His Xaa Xaa Trp Ala
1 5
(2) INFORMATION FOR SEQ ID NO:9:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:9:
His Xaa Xaa Trp Ala 1 5 (2) INFORMATION FOR SEQ ID NO:10:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:10:
His Xaa Xaa Trp Ala
1 5
(2) INFORMATION FOR SEQ ID NO:11:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:11:
His Xaa Xaa Trp Gly
1 5
(2) INFORMATION FOR SEQ ID NO:12:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:12:
His Xaa Xaa Trp Gly
1 5 (2) INFORMATION FOR SEQ ID NO:13:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:13
His Xaa Xaa Trp Gly
1 5
(2) INFORMATION FOR SEQ ID NO:14:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:14:
His Xaa Xaa Trp Gly
1 5
(2) INFORMATION FOR SEQ ID NO:15:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:15:
His Xaa Xaa Trp Gly 1 5 (2) INFORMATION FOR SEQ ID NO:16:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:16
His Xaa Xaa Trp Gly 1 5
(2) INFORMATION FOR SEQ ID NO:17:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 .amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:17.
His Phe Xaa Trp Ala
1 5
(2) INFORMATION FOR SEQ ID NO:18:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 4 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:18:
His Xaa Xaa Trp
1 (2) INFORMATION FOR SEQ ID NO:19:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 4 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:19
His Xaa Xaa Trp
1
(2) INFORMATION FOR SEQ ID NO:20:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 4 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:20:
His Xaa Cys Trp
1
(2) INFORMATION FOR SEQ ID NO:21:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 4 amino acids
(B) TYPE: .amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:21:
His Xaa Cys Trp
1 (2) INFORMATION FOR SEQ ID NO:22:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:22
His Xaa Xaa Trp Ala
1 5
(2) INFORMATION FOR SEQ ID NO:23:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:23:
His Xaa Xaa Trp Ala
1 5
(2) INFORMATION FOR SEQ ID NO:24:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:24:
His Xaa Xaa Trp Ala
1 5 (2) INFORMATION FOR SEQ ID NO:25:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:25:
His Xaa Xaa Trp Ala 1 5
(2) INFORMATION FOR SEQ ID NO:26:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:26:
His Xaa Xaa Trp Ala
1 5
(2) INFORMATION FOR SEQ ID NO:27:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:27:
His Xaa Xaa Trp Ala 1 5 (2) INFORMATION FOR SEQ ID NO:28:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:28
His Xaa Xaa Trp Gly
1 5
(2) INFORMATION FOR SEQ ID NO:29:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:29:
His Xaa Xaa Trp Gly
1 5
(2) INFORMATION FOR SEQ ID NO:30:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:30:
His Xaa Xaa Trp Gly
1 5 (2) INFORMATION FOR SEQ ID NO:31:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:31
His Xaa Xaa Trp Gly
1 5
(2) INFORMATION FOR SEQ ID NO:32:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:32:
His Xaa Xaa Trp Gly
1 5
(2) INFORMATION FOR SEQ ID NO:33:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:33:
His Xaa Xaa Trp Gly
1 5 (2) INFORMATION FOR SEQ ID NO:34:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:34
His Xaa Cys Trp Ala 1 5
(2) INFORMATION FOR SEQ ID NO:35:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:35:
His Xaa Cys Trp Ala 1 5
(2) INFORMATION FOR SEQ ID NO:36:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(Xi) SEQUENCE DESCRIPTION: SEQ ID NO:36:
His Xaa Cys Trp Ala
1 5 (2) INFORMATION FOR SEQ ID NO:37:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:37:
His Xaa Cys Trp Ala 1 5
(2) INFORMATION FOR SEQ ID NO:38:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 .amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:38:
His Xaa Cys Trp Ala
1 5
(2) INFORMATION FOR SEQ ID NO:39:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:39:
His Xaa Cys Trp Ala 1 5 (2) INFORMATION FOR SEQ ID NO:40:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 0:
His Xaa Cys Trp Gly 1 5
(2) INFORMATION FOR SEQ ID NO:41:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:41:
His Xaa Cys Trp Gly 1 5
(2) INFORMATION FOR SEQ ID NO:42:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:42:
His Xaa Cys Trp Gly 1 5 (2) INFORMATION FOR SEQ ID NO:43:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:43
His Xaa Cys Trp Gly 1 5
(2) INFORMATION FOR SEQ ID NO:44:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:44:
His Xaa Cys Trp Gly
1 5
(2) INFORMATION FOR SEQ ID NO:45:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:45:
His Xaa Cys Trp Gly 1 5 (2) INFORMATION FOR SEQ ID NO:46:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:46:
His Xaa Cys Trp Ala
1 5
(2) INFORMATION FOR SEQ ID NO:47:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:47:
His Xaa Cys Trp Ala
1 5
(2) INFORMATION FOR SEQ ID NO:48:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:48:
His Xaa Cys Trp Ala 1 5 (2) INFORMATION FOR SEQ ID NO:49:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:49
His Xaa Cys Trp Ala 1 5
(2) INFORMATION FOR SEQ ID NO:50:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: .amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:50:
His Xaa Cys Trp Ala 1 5
(2) INFORMATION FOR SEQ ID NO:51:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:51:
His Xaa Cys Trp Ala 1 5 (2) INFORMATION FOR SEQ ID NO:52:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:52;
His Xaa Cys Trp Gly 1 5
(2) INFORMATION FOR SEQ ID NO:53:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:53:
His Xaa Cys Trp Gly 1 5
(2) INFORMATION FOR SEQ ID NO:54:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:54:
His Xaa Cys Trp Gly
1 5 (2) INFORMATION FOR SEQ ID NO:55:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:55
His Xaa Cys Trp Gly 1 5
(2) INFORMATION FOR SEQ ID NO:56:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:56:
His Xaa Cys Trp Gly
1 5
(2) INFORMATION FOR SEQ ID NO:57:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 5 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:57:
His Xaa Cys Trp Gly 1 5 (2) INFORMATION FOR SEQ ID NO:58:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 4 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:58
His Xaa Xaa Trp
1
(2) INFORMATION FOR SEQ ID NO:59:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 6 amino acids
(B) TYPE: amino acid (D) TOPOLOGY: linear
(ii) MOLECULE TYPE: peptide
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:59:
Tyr Lys Cys Val lie Met 1 5

Claims (24)

    What is claimed is:CLAIMS
  1. A compound of the Formula I
    n - 1 or 2;
    A = -COR2, -C02R2, -CONHR2, -CSR2, -C(S)R2,
    -C(S)NHR2, or H; wherein R2 is alkyl, - (CH2)m-cycloalkyl,
    - (CH2)m-aryl, - (CH2)m-heteroaryl, and m ■ 0, 1,
  2. 2, or 3;
    R = independently H or Me;
    Y = independently H or Me;
    Z = independently H or Me;
    wherein R4' » H or Me;
    -SR4", wherein R4" » H, alkyl, trityl, or heteroaryl;
    wherein R5' - H, -OH, -0-alkyl, alkyl, -CO- ryl, - (CH2)m-aryl, -0(CH2)m-cycloalkyl, -0(CH2)m-aryl, -0(CH2)m-heteroaryl, -0P03Rs"2, -CH2P03R5"2,
    -CF2P03R5"2, or -CFHP03R5"2, wherein R5' is located at either the ortho, meta, or para position and R5" - H, alkyl, alkylaryl, or cyclohexyl, and m is as described above; -COOR7, wherein R7 « H, Me, t-butyl, or benzyl; -SR8, wherein R8 » H or trityl; R6 - -OR6', wherein R6' - H, benzyl, -P03R5"2, wherein Rs" is as described above;
    -CH2-R9, wherein R9 - -P03R5 " 2 , wherein R5'' is as described above;
    -SR6", wherein R6" - H, benzyl, or trityl; C - Gly, Ala, Val, Leu, He, Phe, Tyr, Tyr(OMe) ,
    Pgl, homoPhe, Trp, Trp(Me) , or Trp(CHO); D - Gly, Ala, or absent;
    E = -COOH, -CONH2, -C0NHNH2, -CONHR10, or -C02R10, wherein R10 - H, alkyl, - (CH2)m-cycloalkyl, - (CH2)m-aryl, or - (CH2)m-heteroaryl, and m is as described above; an isomer or a pharmaceutically acceptable salt thereof.
    A compound according to Claim 1 which is a compound of Formula II:
    wherein n' = 1 or 2;
    A' ■= -COR2', -C02R2', or -CONHR2', wherein R2' = alkyl, - (CH2)m-aryl, - (CH2)m- heteroaryl, and m = 0, 1, or 2; R = independently H or Me; Y = independently H or Me; Z - independently H or Me R12'
    R12 -
    wherein R12' « H or Me;
    -SR12", wherein R12" - H or alkyl;
    wherein R13' - H, -OH, -O-alkyl, alkyl, -CO-aryl, benzyl, -O-benzyl, wherein R13 is located at either the ortho, meta, or para position;
    -OP03R14 2, -CH2P03R14 2, or -CF2P03R14 2, wherein
    R14 •= H or alkyl;
    -COOR15, wherein R15 ■ H, Me, t-butyl, or benzyl;
    R16 = -OR16', wherein R16' = H, benzyl, -P03R14 2, wherein R14 is as described above;
    -CH2-R16", wherein R16" - -P03R14 2, wherein R14 is as described above; -SR16'", wherein R16'" = H or benzyl;
    C = Ala, Trp, Trp(Me), or Trp(CHO); D' ■= Gly, Ala, absent;
    E' -= -COOMe, -CONH2, -CONHNH2, -COOH, or -CONH- alkyl; an isomer or a pharmaceutically acceptable salt thereof.
  3. 3. A compound according to Claim l wherein A is Cbz, BnNHCO, R is H and n is 1 or 2.
  4. 4. A compound according to Claim 1 wherein R4 is
    H
    |) , -SH and Y is H.
  5. 5. A compound according to Claim 1 wherein R5 is
    wherein R5' - H, -OH, -OBn, -OP03H2, -CH2P03H2,
    -CH2P03Et2, -CF2P03H2, or wherein R5 - -COOH, and Z is H.
  6. 6. A compound according to Claim 1 wherein R6 is -OBn, -OH, -SH, or -OP03H2.
  7. 7. A compound according to Claim 1 wherein C is Trp or Ala.
  8. 8. A compound according to Claim 1 wherein D is Gly, Ala, or absent.
  9. 9. A compound according to Claim 1 wherein E is -COOH, -CONH2, -COOMe, -CONHEt, -C0NHNH2, or -CONHMe.
  10. 10. A compound according to Claim 1 which is
    Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-D-Ala-CONH2,•
    Cbz-Cys-Tyr(OBn) -Ser(OBn) -Trp-DAla-CONH2;
    Cbz-His-Tyr(OP03H2) -Ser(OBn) -Trp-DAla-CONH2; Cbz-His-p(CH2P03H2)Phe-Ser(OBn) -Trp-DAla-
    CONH2;
    Cbz-His-p(CH2P03Et2)Phe-Ser(OBn) -Trp-DAla-
    CONH2;
    Cbz-His-p(CF2P03H2)Phe-Ser(OBn) -Trp-DAla- CONH2;
    Cbz-His-Glu-Ser(OBn) -Trp-DAla-CONH2;
    Cbz-His-Asp-Ser(OBn) -Trp-DAla-CONH2;
    Cbz-His-Tyr(OBn) -Ser(OP03H2) -Trp-DAla-CONH2;
    Cbz-His-Tyr(OP03H2) -Cys-Trp-DAla-CONH2; and Cbz-His-Tyr(OP03H2) -Ser(OBn) -Trp-CONH2.
  11. 11. A compound according to Claim l selected from the group consisting of:
    Cbz-His-Tyr(OBn -Ser(OBn) -Trp-D-Ala-CONHMe;
    Cbz-His-Tyr(OBn -Ser(OBn) -Trp-D-Ala-CONHEt; Cbz-His-Tyr(OBn -Ser(OBn) -Trp-D-Ala-CONHNH2;
    Cbz-His-Tyr(OBn -Ser(OBn) -Trp-D-Ala-C02Me; Cbz-His-Tyr(OBn -Ser(OBn) -Trp-D-Ala; Cbz-His-Tyr(OBn -Ser(OBn) -Trp-Ala-CONH2; Cbz-His-Tyr(OBn -Ser(OBn) -Trp-Ala-CONHMe; Cbz-His-Tyr(OBn -Ser(OBn) -Trp-Ala-CONHEt;
    Cbz-His-Tyr(OBn -Ser(OBn) -Trp-Ala-CONHNH2; Cbz-His-Tyr(OBn -Ser(OBn) -Trp-Ala-C02Me; Cbz-His-Tyr(OBn -Ser(OBn) -Trp-Ala; Cbz-His-Tyr(OBn -Ser(OBn) -Trp-Gly-CONH2; Cbz-His-Tyr(OBn -Ser(OBn) -Trp-Gly-CONHMe;
    Cbz-His-Tyr(OBn -Ser(OBn) -Trp-Gly-CONHEt; Cbz-His-Tyr(OBn -Ser(OBn) -Trp-Gly-CONHNH2; Cbz-His-Tyr(OBn -Ser(OBn) -Trp-Gly-C02Me; and Cbz-His-Tyr(OBn -Ser(OBn) -Trp-Gly.
  12. 12. A compound according to Claim 1 selected from the group consisting of:
    Cbz-His-Tyr-Ser(OBn) -Trp-D-Ala-CONH2; Cbz-His-Tyr(OBn) -Ser-Trp-D-Ala-CONH2; Cbz-His-Phe-Ser(OBn) -Trp-D-Ala-CONH2; Cbz-His-Phe-Ser(OBn) -Trp-Ala-CONH2; Cbz-His-Tyr(OBn) -Ser(OBn) -Ala-D-Ala-CONH2; Cbz-D-His-Tyr(OBn) -Ser(OBn) -Trp-D-Ala-CONH2; and
    Cbz-His-D-Tyr(OBn) -Ser(OBn) -Trp-D-Ala-CONH:
  13. 13. A compound according to Claim 1 selected from the group consisting of:
    Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-C02Me; Cbz-His-Tyr(OBn) -Ser(OBn) -Trp-CONH2; Cbz-His-Tyr(OBn) -Ser(OBn) -D-Ala-C02Me; Cbz-His-Tyr(OBn) -Ser(OBn) -D-Ala; Cbz-D-His-Tyr(OBn) -Ser(OBn) -Trp-C02Me; Cbz-His-D-Tyr(OBn) -Ser(OBn) -Trp-C02Me; Cbz-His-Tyr(OBn) -Cys-Trp-CONH2; and BnNHCO-His-Tyr(OBn) -Cys-Trp-CONH2.
  14. 14. A compound according to Claim 1 selected from the group consisting of:
    BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-D-Ala-CONH2; BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-D-Ala- CONHMe;
    BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-D-Ala- CONHEt;
    BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-D-Ala- CONHNH2; BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-D-Ala-C02Me;
    BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-D-Ala; BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-Ala-CONH2; BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-Ala-CONHMe; BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-Ala-CONHEt; BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-Ala-CONHNH2;
    BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-Ala-C02Me; BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-Ala; BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-Gly-CONH2; BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-Gly-CONHMe; BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-Gly-CONHEt;
    BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-Gly-CONHNH2; BnNHCO-His-Tyr(OBn -Ser(OBn) -Trp-Gly-C02Me; and
    BnNHCO-His-Tyr(OBn) -Ser(OBn) -Trp-Gly.
  15. 15. A compound according to claim 1 selected from the group consisting of:
    Cbz-His-Tyr(OBn) -Cys-Trp-D-Ala-CONH2,* Cbz-His-Tyr(OBn) -Cys-Trp-D-Ala-CONHMe; Cbz-His-Tyr(OBn) -Cys-Trp-D-Ala-CONHEt; Cbz -His Tyr(OBn) •Cys-Trp-D-Ala-CONHNH2; Cbz -His Tyr(OBn) •Cys-Trp -D-Ala-C02Me; Cbz -His Tyr (OBn) Cys-Trp -D-Ala; Cbz -His Tyr(OBn) Cys-Trp ■Ala-CONH2; Cbz -His Tyr(OBn) Cys-Trp ■Ala-CONHMe; Cbz -His Tyr(OBn) Cys-Trp -Ala-CONHEt; Cbz -His Tyr(OBn) Cys-Trp •Ala-CONHNH2; Cbz -His Tyr(OBn) Cys-Trp ■Ala-C02Me; Cbz ■His Tyr(OBn) Cys-Trp -Ala; Cbz -His Tyr (OBn) Cys-Trp ■Gly-CONH2; Cbz ■His Tyr(OBn) Cys-Trp ■Gly-CONHMe; Cbz -His Tyr (OBn) Cys-Trp •Gly-CONHEt; Cbz ■His Tyr (OBn) Cys-Trp ■Gly-CONHNH2; Cbz ■His Tyr (OBn) Cys-Trp •Gly-C02Me; and Cbz •His Tyr (OBn) Cys-Trp* ■Gly.
  16. 16. A compound according to Claim l selected from the group consisting of:
    BnNHCO-His-Tyr(OBn -Cys-Trp -D-Ala-CONH2;
    BnNHCO-His-Tyr(OBn -Cys-Trp •D-Ala-CONHMe; BnNHCO-His-Tyr(OBn -Cys-Trp ■D-Ala-CONHEt;
    BnNHCO-His-Tyr(OBn -Cys-Trp ■D-Ala-CONHNH2; BnNHCO-His-Tyr(OBn -Cys-Trp ■D-Ala-C02Me; BnNHCO-His-Tyr(OBn ■Cys-Trp ■D-Ala; BnNHCO-His-Tyr(OBn ■Cys-Trp ■Ala-CONH2; BnNHCO-His-Tyr(OBn ■Cys-Trp ■Ala-CONHMe;
    BnNHCO-His-Tyr(OBn -Cys-Trp ■Ala-CONHEt; BnNHCO-His-Tyr(OBn -Cys-Trp ■Ala-CONHNH2; BnNHCO-His-Tyr(OBn ■Cys-Trp •Ala-C02Me; BnNHCO-His-Tyr(OBn ■Cys-Trp -Ala; BnNHCO-His-Tyr(OBn ■Cys-Trp •Gly-CONH2;
    BnNHCO-His-Tyr(OBn ■Cys-Trp Gly-CONHMe,* BnNHCO-His-Tyr(OBn ■Cys-Trp •Gly-CONHEt; BnNHCO-His-Tyr(OBn ■Cys-Trp •Gly-CONHNH2; BnNHCO-His-Tyr(OBn •Cys-Trp Gly-C02Me; and BnNHCO-His-Tyr(OBn •Cys-Trp Gly.
  17. 17. A method of treating tissue proliferative diseases comprising administering to a mammal suffering therefrom a therapeutically effective amount of a compound according to Claim 1 in unit dosage form.
  18. 18. A pharmaceutical composition comprising a therapeutically effective amount of a compound according to Claim 1 in admixture with a pharmaceutically acceptable excipient, diluent, or carrier.
  19. 19. A method of treating cancer comprising administering to a mammal suffering therefrom a therapeutically effective amount of a compound according to Claim 1 in unit dosage form.
  20. 20. A pharmaceutical composition comprising a therapeutically effective amount of a compound according to Claim 2 in admixture with a pharmaceutically acceptable excipient, diluent, or carrier.
  21. 21. A method of treating restenosis comprising administering to a mammal suffering therefrom a therapeutically effective amount of a compound according to Claim 1 in unit dosage form.
  22. 22. A pharmaceutical composition comprising a therapeutically effective amount of a compound according to Claim 10 in admixture with a pharmaceutically acceptable excipient, diluent, or carrier.
  23. 23. A process for the preparation of compounds of Formula I according to Claim 1, or a pharmaceutically acceptable salt thereof, comprising the steps of employing solid phase support technology and sequentially coupling peptide building blocks by utilizing a solid phase peptide synthesizer, cleaving coupled building blocks from the solid phase support and optionally modifying the C-terminal of the coupled building blocks in solution phase to afford a compound of Formula I or a pharmaceutically acceptable salt thereof.
  24. 24. A process for the preparation of compounds of Formula I according to Claim 1, or a pharmaceutically acceptable salt thereof, comprising the steps of employing solution phase technology and sequentially coupling peptide building blocks to afford a compound of Formula I or a pharmaceutically acceptable salt thereof.
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