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CN1431998A - 生长激素促分泌剂 - Google Patents

生长激素促分泌剂 Download PDF

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CN1431998A
CN1431998A CN01810491A CN01810491A CN1431998A CN 1431998 A CN1431998 A CN 1431998A CN 01810491 A CN01810491 A CN 01810491A CN 01810491 A CN01810491 A CN 01810491A CN 1431998 A CN1431998 A CN 1431998A
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aib
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让·马丁内斯
让-阿兰·费伦茨
文森特·格拉韦斯
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A Eitner Had Taris LLC
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Abstract

本发明涉及式I化合物,用于提高哺乳动物血浆中生长激素水平,以及用于治疗生长激素分泌不足、儿童生长缓慢以及与生长激素分泌不足有关的代谢疾病。

Description

生长激素促分泌剂
发明领域
本发明涉及一种用于向哺乳动物给药后提高血浆中生长激素水平的化合物。
发明背景
(a) 现有技术说明
由垂体分泌的生长激素(GH)组成了一个激素家族,其生物活性是年幼有机体线性生长以及保持其成熟状态完整性所必需的。GH通过刺激生长因子(类胰岛素生长因子I或IGF-I)或其受体(表皮生长因子或EGF)的合成,直接或间接作用于外围器官。GH的直接作用是被称为抗胰岛素的类型,促进了脂肪组织水平的脂解作用。通过其对于IGF-I(生长调节素C)合成和分泌的作用,GH刺激软骨和骨骼的生长(结构生长)、蛋白合成和多种外围器官,包括肌肉和皮肤的细胞内增殖。通过其生物活性,GH参与成年期蛋白合成代谢状态的维护,并在外伤后组织的再生中起首要作用。
已在人类和动物中证实,GH的分泌随年龄的减少,促进代谢向引起或参与向生物体老化的分解代谢移动。在老龄中观察到的肌肉质量损失、脂肪组织的聚集、骨骼的脱矿质、受伤后组织再生能力的缺失,都与GH的分泌减少有关。
因此,GH是儿童线性生长所必需的生理组织代谢试剂并控制成年人的蛋白代谢。
生长激素(GH)的分泌受两种下丘脑肽的调节:对GH释放产生刺激效果的GH-释放激素(GHRH)和显示抑制影响的生长激素抑制素。在最近的几年,一些研究人员已经证明,GH的分泌也可以被称为GH-释放肽(GHRP)的合成寡肽所刺激,例如hexarelin和各种hexarelin类似物(Ghigo等,EuropeanJoumal of Endocrinology,136,445-460,1997)。这些化合物通过与GHRH不同的机理(C.Y.Bowers,in“Xenobiotic Growth Hormone Secretagogues”,编辑B.Bercu和R.F.Walker,9-28页,Springer-Verlag,New York1996)以及通过与位于下丘脑和垂体中的特殊受体的相互作用而起作用((a)G.Muccioli等,Journal of Endocrinology,157,99-106,1998;(b)G.Muccioli,“TissueDistribution of GHRP Receptors in Human”,Abstracts IV European Congress ofEndocrinology,Sevilla,Spain,1998)。最近证明,GHRP受体不仅存在于下丘脑-垂体系统,而且也存在于通常与GH释放无关的各种人体组织中(G.Muccioli等,参见上述(a))。
GHRPs及其拮抗剂在例如以下出版物中描述:C.Y.Bowers,见上文,R.Deghenghi,“Growth Hormone Releasing Peptides”,同上,1996,85-102页;R.Deghenghi等,“Small Peptides as Potent Releasers of Growth Hormone”,J.Ped.End.Metab.,8,311-313页,1996;R.Deghenghi,“The Development ofImpervious Peptides as Growth Hormone Secretagogues”,Acta Paediatr,Suppl.,423,85-87页,1997;K.Veeraraganavan等,“Growth Hormone ReleasingPeptides(GHRP)Binding to Porcine Anterior Pituitary and HypothalamicMembranes”,Life Sci.,50,1149-1155页,1992;和T.C.Somers等,“LowMolecular Weight Peptidomimetic Growth Hormones Secretagogues,WO96/15148(May23,1996)。
人GH已经可以通过基因工程技术生产约十年了。直至最近,大部分GH的用途才集中到有关儿童生长的延迟,而现在开始研究GH在成人中的使用。GH、GHRPs和生长激素促分泌剂药理学用途可以分成下面三个主要类别:
(b) 儿童生长
用重组的人生长激素的治疗已经显示可以刺激患有垂体侏儒症、肾功能不全、特纳综合症和身材矮小的儿童的生长。重组的人GH目前在欧洲和美国已商业化用于治疗因GH缺乏引起的儿童生长延迟和儿童的肾功能不全。其它应用处于临床实验研究阶段。
(C) 用于成年和老年病人的长期治疗
GH分泌的减少引起身体组成在老化过程中的改变。用重组的人GH治疗一年的初步研究报道了老年病人人群中肌肉质量和皮肤厚度的增加、脂肪物质的减少和骨密度的轻微增加。对于骨质疏松症,最近的研究提出,重组的人GH并没有增加骨骼矿物质,但其可能阻止绝经后妇女的骨骼脱矿质。进一步的研究正在证明这一理论。
(d) 用于成年和老年病人的短期治疗
在临床前和临床研究中,生长激素已经显示刺激蛋白质的合成代谢和烧伤、AIDS和癌症情况的治疗,及伤口和骨骼的愈合。
GH、GHRPs和生长激素促分泌剂同样可以用于兽医药理学用途。GH、GHRPs和生长激素促分泌剂在猪的催肥期通过促进肌肉组织而不是脂肪组织的沉积而刺激生长并增加母牛的产奶量,而且这不会产生危害动物健康的不需要的负作用并且在生产的肉和奶中没有残余物。最近,牛生长激素(BST)在美国已进入市场。
目前进行的大多数临床研究采用重组GH进行。GHRPs和生长激素促分泌剂被视为第二代产品,在不久的将来会在大多数情况下替代GH使用。因此,使用GHRPs和生长激素促分泌剂比使用GH具有许多优点。
所以,需要有一种化合物,在向哺乳动物给药后起生长激素促分泌剂的作用。
发明概要
本发明涉及一种作为生长激素促分泌剂的新化合物,以及一般说来,涉及通过向哺乳动物给药本发明的一种或多种化合物,以提高生血浆中长激素水平的方法。本发明也涉及通过向哺乳动物给药治疗有效量的这些化合物中一种,治疗生长激素分泌不足、促进伤口愈合、外科手术恢复或衰老疾病恢复的方法。
优选实施方案的详细说明
在本说明书中,使用以下缩写:D是右旋对映异构体、GH是生长激素、Boc是叔丁氧基羰基、Z是苄氧基羰基、N-Me是N-甲基、Pip是4-氨基-哌啶-4-甲酸酯、Inip是异哌啶甲酰基,即,哌啶-4-甲酸酯、Aib是α-氨基异丁酰、Nal是β-萘基丙氨酸、Mrp是2-甲基-Trp,以及Ala、Lys、Phe、Trp、His、Thr、Cys、Tyr、Leu、Gly、Ser、Pro、Glu、Arg、Val和Gln分别是氨基酸丙氨酸、赖氨酸、苯丙氨酸、色氨酸、组氨酸、苏氨酸、半胱苷酸、酪氨酸、亮氨酸、甘氨酸、丝氨酸、脯氨酸、谷氨酸、精氨酸、缬氨酸和谷氨酰胺。此外,gTrp是下式基团,以及gMrp是下式基团其中*表示碳原子,其中当其为手性碳原子时,具有R或S构型。
本发明化合物是通式I的化合物:其中*表示碳原子,其中当其是手性碳原子时,具有R或S构型,R1和R3之一是氢原子,另一个是式II基团,
Figure A0181049100094
R2是氢原子、直链或支链的C1-C6烷基、芳基、杂环基、环烷基、(CH2)n-芳基、(CH2)n-杂环基、(CH2)n-环烷基、甲磺酰基、苯磺酰基、C(O)R8基团或下式III-VIII中的一个基团:
Figure A0181049100101
R4是氢原子,或直链或支链的C1-C4烷基,R5是氢原子、直链或支链的C1-C4烷基、(CH2)n-芳基、(CH2)n-杂环基、(CH2)n-环烷基或氨基,R6和R7各自独立地是氢原子,或直链或支链的C1-C4烷基,R8是直链或支链的C1-C6烷基,R9、R10、R11、R12、R13、R14、R15和R16各自独立地是氢原子,或直链或支链的C1-C4烷基,m是0、1或2,以及n是1或2。
本发明的优选实施方案是其中R2是氢、R3是式II基团和m是0的化合物。特别优选的是其中直链或支链C1-C4烷基是甲基、直链或支链C1-C6烷基是甲基、乙基或异丁基、芳基是苯基或萘基、环烷基是环己基和杂环基是4-哌啶基(piperidinyl)或3-吡咯基的化合物。
本发明中特别优选的化合物包括以下化合物:
H-Aib-D-Trp-D-gTrp-CHO:
N-Me-Aib-D-Trp-D-gTrp-C(O)CH3
N-Me-Aib-D-Trp-N-Me-D-gTrp-C(O)CH3
根据本发明,已经发现本发明化合物可用于提高哺乳动物血浆中生长激素的水平。另外本发明的化合物可用于治疗生长激素分泌不足、儿童生长迟缓和与生长激素分泌不足有关的代谢疾病,特别是老年患者的疾病。
如果需要,也可以使用这些化合物的药物可接受盐。所述盐包括有机或无机酸加成盐,例如盐酸盐、氢溴酸盐、磷酸盐、硫酸盐、乙酸盐、琥珀酸盐、抗坏血酸盐、酒石酸盐、葡萄糖酸盐、苯甲酸盐、苹果酸盐、富马酸盐、硬脂酸盐或双羟萘酸盐。
本发明药物组合物可用于提高哺乳动物,包括人类的血浆中生长激素的水平,并用于治疗生长激素分泌不足、儿童生长迟缓和与生长激素分泌不足有关的代谢疾病,特别是老年患者的疾病。这种药物组合物可以包括本发明化合物或其药物可接受的盐、或本发明化合物或其药物可接受盐与任选混合的载体、赋形剂、媒介物、稀释剂、基质或缓释包被。这种载体、赋形剂、媒介物和稀释剂的例子可以参见Remington’s PharmaceuticalSciences,18th Edition,A.R.Gennaro,Ed.,Mack Publishing Company,Easton,PA,1990。
本发明的药物组合物可以包括其它生长激素促分泌剂。合适的其它生长激素促分泌剂的例子是Ghrelin(参见M.Kojima等,Nature,402(1999),656-660),GHRP-1,GHRP-2和GHRP-6。
Ghrelin:Gly-Ser-Ser(O-正辛酰基)-Phe-Leu-Ser-Pro-Glu-His-Gln-Arg-Val-Gln-Gln-Arg-Lys-Glu-Ser-Lys-Lys-Pro-Pro-Ala-Lys-Leu-Gln-Pro-Arg
GHRP-1:Ala-His-D-β-Nal-Ala-Trp-D-Phe-Lys-NH2
GHRP-2:D-Ala-D-β-Nal-Ala-Trp-D-Phe-Lys-NH2
GHRP-6:His-D-Trp-Ala-Trp-D-Phe-Lys-NH2
本发明的任一化合物可以经过本领域技术人员配制为适于肠胃外、口腔、直肠、阴道、经皮、肺或口服给药途径的药剂。
含有上述化合物的药剂的剂型可以根据所需的输送速度选择。例如,如果化合物需要迅速输送,优选经鼻或静脉途径。
可以以治疗有效剂量向哺乳动物,包括人类给药,所述治疗有效量是可以由本领域技术人员容易地确定并可以根据待治疗病人或受治疗者的种属、年龄、性别和体重,以及给药路经而改变的。根据经验可以很容易地确定确切的用量。
实施例
以下实施例用于阐述在本发明的治疗中使用的最优选化合物的效果。
实施例1:H-Aib-D-Trp-D-gTrp-CHO
全部合成(百分比表示如下合成中得到的收率):
     Z-D-Trp-OH
98%    ↓ 1)IBCF,NHM,DME,0℃
        ↓ 2)NH4OH
        ↓
    Z-D-Trp-NH2
85%    ↓ 1)H2,Pd/C,DMF,H2O,HCl
        ↓ 2)BOP,NMM,DMF,Boc-D-Trp-OH
        ↓
     Boc-D-Trp-D-Trp-NH2
60%    ↓ t-Boc2O,DMAP催化剂,无水CH3CN
13%    ↓ Boc-D-(N’Boc)Trp-D-(N’Boc)Trp-NH2
70%    ↓ 1)BTIB,吡啶,DMF/H2O
        ↓ 2)2,4,5-三氯苯基甲酸,DIEA,DMF
        ↓
     Boc-D-(N’Boc)Trp-D-(N’Boc)Trp-CHO
70%    ↓1)TFA/苯甲醚/硫代苯甲醚(8/1/1),
     ↓ 2)BOP,NMM,DMF,Boc-Aib-OH
          ↓
    Boc-Aib-D-Trp-D-gTp-CHO
52%    ↓1)TFA/苯甲醚/硫代苯甲醚
↓ 2)在制备HPLC上纯化
          ↓
       H-Aib-D-Trp-D-gTrp-CHOZ-D-Trp-NH2
Z-D-Trp-OH(8.9g;26mmol;1当量)溶于DME(25ml)中并置于冰水浴中至0℃。依次加入NMM(3.5ml;1.2当量),IBCF(4.1ml;1.2当量)和28%氨水溶液(8.9ml;5当量)。用水(100ml)稀释混合物,产物Z-D-Trp-NH2沉淀。过滤并真空干燥,得到8.58g白色固体。
收率=98%
C19H19N3O3,337g·mol-1
Rf=0.46{氯仿/甲醇/乙酸(180/10/5)}
1H NMR(250 MHZ,DMSO-d6):2.9(dd,1H,Hβ′,Jββ′=14.5Hz;Jβα=9.8Hz);3.1(dd,1H,Hβ′,Jβ′β=14.5Hz;Jβ′α=4.3Hz);4.2(六重峰,1H,Hα);4.95(s,2H,CH2(Z));6.9-7.4(m,11H);7.5(s,1H,H2);7.65(d,1H,J=7.7Hz);10.8(s,1H,N1H)。
质谱(电喷雾),m/z338[M+H]+,360[M+Na]+,675[2M+H]+,697[2M+Na]+
Boc-D-Trp-Drp-NH 2
将Z-D-Trp-NH2(3g;8.9mmol;1当量)溶于DMF(100ml)。向搅拌的混合物中加入36%HCl(845μl;1.1当量)、水(2ml)和活性碳上的钯(95mg,0.1当量)。溶液经氢气鼓泡24小时。当反应完成时,用硅藻土过滤钯。在真空中除去溶剂得到无色油状的HCl,H-D-Trp-NH2
向10mlDMF中相继加入HCl,H-D-Trp-NH2(8.9mmol;1当量)、Boc-D-Trp-OH(2.98g;9.8mmol;1.1当量)、NMM(2.26ml;2.1当量)和BOP(4.33g;1.1当量)。1小时后,用乙酸乙酯(100ml)稀释混合物并用饱和碳酸氢钠水溶液(200ml)、硫酸氢钾水溶液(200ml,1M)和饱和氯化钠水溶液(100ml)清洗。用硫酸钠干燥有机层,过滤并真空除去溶剂得到4.35g白色固体Boc-D-Trp-D-Trp-NH2
收率=85%
C27H31N5O4,489g·mol-1
Rf=0.48{氯仿/甲醇/乙酸(180/10/5)}
1H NMR(200 MHZ,DMSO-d6):1.28(s,9H,Boc);2.75-3.36(m,4H,2(CH2)β;4.14(m,1H,CHα);4.52(m,1H,CHα′);6.83-7.84(m,14H,2吲哚(10H),NH2,NH(尿烷)and NH(酰胺));10.82(d,1H,J=2Hz,N1H);10.85(d,1H,J=2Hz,N1H)。
质谱(电喷雾),m/z490[M+H]+,512[M+Na]+,979[2M+H]+
Boc-D(NiBoc)Trp-D-(NiBoc)Trp-NH 2
将Boc-D-Trp-D-Trp-NH2(3g;6.13mmol;1当量)溶于乙腈(25ml)。向该溶液中相继加入焦碳酸二叔丁酯(di-tert-butyl-dicarbonate)(3.4g;2.5当量)和4-二甲基氨基吡啶(150mg;0.2当量)。1小时后,用乙酸乙酯(100ml)稀释混合物并用饱和碳酸氢钠水溶液(200ml)、硫酸氢钾水溶液(200ml,1M)和饱和氯化钠水溶液(100ml)清洗。用硫酸钠干燥有机层,过滤并真空除去溶剂。残余物用快速硅胶色谱纯化,用乙酸乙酯/己烷{5/5}洗脱得到2.53g白色固体Boc-D-(NiBoc)Trp-D-(NiBoc)Trp-NH2
收率=60%
C37H47N5O8,689g·mol-1
Rf=0.23{乙酸乙酯/己烷(5/5)}
1H NMR(200 MHZ,DMSO-d6):1.25(s,9H,Boc);1.58(s,9H,Boc);1.61(s,9H,Boc);2.75-3.4(m,4H,2(CH2)α);4.2(m,1H,CHα′);4.6(m,1H,CHα);7.06-8(m,14H,2吲哚(10H),NH(尿烷),NH and NH2(酰胺))。
质谱(电喷雾),m/z690[M+H]+,712[M+Na]+,1379[2M+H]+,1401[2M+Na]+
Boc-D-(N i Boc)Trp-D-g(N i Boc)Trp-II
Boc-D-(NiBoc)Trp-D-(NiBoc)Trp-NH2(3g;4.3mmol;1当量)溶于DMF/水(18ml/7ml)混合物中。然后,加入吡啶(772μl;2.2当量)和双(三氟乙酰氧基)碘苯(2.1g;1.1当量)。1小时后,用乙酸乙酯(100ml)稀释混合物并用饱和碳酸氢钠水溶液(200ml)、硫酸氢钾水溶液(200ml,1M)和饱和氯化钠水溶液(100ml)清洗。用硫酸钠干燥有机层,过滤并真空除去溶剂。Boc-D-(NiBoc)Trp-D-g(NiBoc)Trp-H立即用于下一步甲酰化反应。
Rf=0.14{乙酸乙酯/己烷(7/3)}
C36H47N5O7,661g.mol-1
1H NMR(200MHZ,DMSO-d6):1.29(s,9H,Boc);1.61(s,18H,2Boc);2.13(s,2H,NH2(胺));3.1-2.8(m,4H,2(CH2)α);4.2(m,1H,CHα′);4.85(m,1H,CHα);6.9-8(m,12H,2吲哚(10H),NH(尿烷),NH(酰胺))。
质谱(电喷雾),m/z 662[M+H]+,684[M+Na]+
Boc-D-(N i Boc)Trp-D-(N i Boc)Trp-CHO
Boc-D-(NiBoc)Trp-D-(NiBoc)Trp-H(4.3mmol;1当量)溶于DMF(20ml)中。然后,加入N,N-二异丙基乙胺(815μl;1.1当量)和2,4,5-三氯苯基甲酸(1.08g;1.1当量)。30分钟后,用乙酸乙酯(100ml)稀释混合物并用饱和碳酸氢钠水溶液(200ml)、硫酸氢钾水溶液(200ml,1M)和饱和氯化钠水溶液(100ml)清洗。用硫酸钠干燥有机层,过滤并真空除去溶剂。残余物用快速硅胶色谱纯化,用乙酸乙酯/己烷{5/5}洗脱得到2.07g白色固体Boc-D-(NiBoc)Trp-D-(NiBoc)Trp-CHO。
收率=70%
C37H47N5O8,689g·mol-1
Rf=0.27{乙酸乙酯/己烷(5/5)}
1H NMR(200 MHZ,DMSO-d6):1.28(s,9H,Boc);1.6(s,9H,Boc);1.61(s,9H,Boc);2.75-3.1(m,4H,2(CH2)β);4.25(m,1H,(CH)αA&B);5.39(m,0.4H,(CH)α′B);5.72(m,0.6H,(CH)α′A);6.95-8.55(m,14H,2吲哚(10H),NH(尿烷),2 NH(酰胺),CHO(甲酰基))。
质谱(电喷雾),m/z690[M+H]+,712[M+Na]+,1379[2M+H]+
Boc-Aib-D-Trp-D-gTrp-CHO
在0℃下,将Boc-D-(NiBoc)Trp-D-g(NiBoc)Trp-CHO(1.98g;2.9mmol;1当量)溶于三氟乙酸(16ml)、苯甲醚(2ml)和硫代苯甲醚(2ml)的混合物中并放置30分钟。真空除去溶剂,残余物与乙醚一起搅拌,并将沉淀的TFA,H-D-Trp-D-gTrp-CHO过滤。
相继将TFA,H-D-Trp-D-gTrp-CHO(2.9mmol;1当量)、Boc-Aib-OH(700mg;1当量)、NMM(2.4ml;4.2当量)和BOP(1.53g;1.2当量)加入10ml DMF中。1小时后,用乙酸乙酯(100ml)稀释混合物并用饱和碳酸氢钠水溶液(200ml)、硫酸氢钾水溶液(200ml,1M)和饱和氯化钠水溶液(100ml)清洗。用硫酸钠干燥有机层,过滤并真空除去溶剂。残余物用快速硅胶色谱纯化,用乙酸乙酯/己烷{5/5}洗脱,得到1.16g白色固体Boc-Aib-D-Trp-D-gTrp-CHO。
收率=70%
C31H38N6O5,574g·mol-1
Rf=0.26{氯仿/甲醇/乙酸(180/10/5)}
1H NMR(200MHZ,DMSO-d6):1.21(s,6H,2CH3(Aib));1.31(s,9H,Boc);2.98-3.12(m,4H,2(CH2)α);4.47(m,1H,(CH)αA&B);5.2(m,0.4H,(CH)α′B);5.7(m,0.6H,(CH)α′A);6.95-8.37(m,15H,2吲哚(10H),3NH(酰胺),1NH(尿烷),CHO(甲酰基));10.89(m,2H,2N1H(吲哚))。
质谱(电喷雾),m/z575[M+H]+,597[M+Na]+,1149[2M+H]+,1171[2M+Na]+
H-Aib-D-Trp-D-gTrp-CHO
在0℃下,Boc-Aib-D-Trp-D-gTrp-CHO(1g;1.7mmol)溶于三氟乙酸(8ml)、苯甲醚(1ml)和硫代苯甲醚(1ml)的混合物中并放置30分钟。真空除去溶剂,残余物与乙醚一起搅拌,并将沉淀的TFA,H-Aib-D-Trp-D-gTrp-CHO过滤。
产物TFA,H-Aib-D-Trp-D-gTrp-CHO用制备HPLC(水,deltapαk,C18,40×100mm,5μm,100A)纯化。
收率=52%
C26H30N6O3,474g·mol-1
1H NMR(400 MHZ,DMSO-d6)+1H/1H相关:1.21(s,3H,CH3(Aib));1.43(s,3H,CH3(Aib));2.97(m,2H,(CH2)β);3.1(m,2H,(CH2)β′);4.62(m,1H,(CH)αA&B);5.32(q,0.4H,(CH)α′B);5.71(q,0.6H,(CH)α′A);7.3(m,4H,H5和H6(2吲哚));7.06-7.2(4d,2H,H2A和H2B(2吲哚));7.3(m,2H,H4 or H7(2吲哚));7.6-7.8(4d,2H,H4A和H4B或H7A和H7B);7.97(s,3H,NH2(Aib)和CHO(甲酰基));8.2(d,0.4H,NH1B(二氨基));8.3(m,1H,NHA&B);8.5(d,0.6H,NH1A(二氨基));8.69(d,0.6H,NH2A(二氨基));8.96(d,0.4H,NH2B(二氨基));10.8(s,0.6H,N1H1A(吲哚));10.82(s,0.4H,N1H1B(吲哚));10.86(s,0.6H,N1H2A(吲哚));10.91(s,0.4H,N1H2B(吲哚))。
质谱(电喷雾),m/z475[M+H]+,949[2M+H]+
下列化合物用相似方法合成:
实施例2  H-Aib-D-Mrp-D-gMrp-CHO
C28H34N6O3,502g·mol-1
1H NMR(400MHZ,DMSO-d6)+1H/1H相关:1.19(s,2H,(CH3)1A(Aib));1.23(s,1H,(CH3)1B(Aib));1.41(s,2H,(CH3)2A(Aib));1.44(s,2H,(CH3)2B(Aib));2.33-2.35(4s,6H,2CH3(吲哚));2.93(m,2H,(CH2)β);3.02(m,2H,(CH2)β′);4.65(m,0.6H,(CH)αA);4.71(m,0.4H,(CH)αB);5.2(m,0.4H,(CH)α′B);5.6(m,0.6H,(CH)α′A);6.95(m,4H,H5和H6(2吲哚));7.19(m,2H,H4或H7(2吲哚));7.6(m,2H,H4或H7(2吲哚));7.9(s,1H,CHO(甲酰基));7.95(s,2H,NH2(Aib));8.05(d,0.4H,NH1B(二氨基));8.3(m,1H,NHA&B);8.35(m,0.6H,NH1A(二氨基));8.4(d,0.6H,NH2A(二氨基));8.75(d,0.4H,NH2B(二氨基));10.69(s,0.6H,N1H1A(吲哚));10.71(s,0.4H,N1H1B(吲哚));10.80(s,0.6H,N1H2A(吲哚));10.92(s,0.4H,N1H2B(吲哚))。
质谱(电喷雾),m/z503.1[M+H]+
实施例3N-Me-Aib-D-Trp-D-gTrp-CHO
将Boc-N-Me-Aib-OH(327mg;1.5mmol;2.6当量)溶于二氯甲烷(10ml)中并冷却到0℃。然后,加入二环己基碳二亚胺(156mg;0.75mmol;1.3当量)。在DCU过滤后,将混合物加入含TFA、H-D-Trp-D-gTrp-CHO(0.58mmol;1当量)和三乙胺(267μl;3.3当量)的二氯甲烷(5ml)溶液中。反应混合物缓慢加热到室温并于24小时后停止。用乙酸乙酯(25ml)稀释混合物并用饱和碳酸氢钠水溶液(50ml)、硫酸氢钾水溶液(50ml,1M)和饱和氯化钠水溶液(50ml)清洗。用硫酸钠干燥有机层,过滤并真空除去溶剂。残余物用快速硅胶色谱纯化,用乙酸乙酯/甲醇{9/1}洗脱,得到180mg(53%)白色泡沫状的Boc-N-Me-Aib-D-Trp-D-gTrp-CHO。
Boc-N-Me-Aib-D-Trp-D-gTrp-CHO(180mg;0.3mmol)于0℃下溶于三氟乙酸(8ml)、苯甲醚(1ml)和硫代苯甲醚(1ml)的混合物中并放置30分钟。真空除去溶剂,残余物与乙醚一起搅拌,并将沉淀的TFA,N-Me-Aib-D-Trp-D-gTrp-CHO过滤。
产物TFA,N-Me-Aib-D-Trp-D-gTrp-CHO(39mg;15%)用制备HPLC(水,delta pak,C18,40×100mm,5μm,100A)纯化。
C27H32N6O3,488g·mol-1
1H RMN(200MHZ,DMSO-d6):1.19(s,3H,CH3(Aib));1.42(s,3H,CH3(Aib));2.26(s,3H,NCH3);3.12(m,4H,2(CH2)β);4.66(m,1H,(CH)β);5.32和5.7(m,1H,(CH)α′);6.9-7.8(m,10H,2吲哚);8(m,1H,CHO(甲酰基));8.2-9(m,4H,3NH(酰胺)和NH(胺));10.87(m,2H,2N1H(吲哚))。
质谱(电喷雾),m/z489.29[M+H]+
实施例4  H-Aib-D-Trp-D-gTrp-C(O)CH3
将Boc-D-(NiBoc)Trp-D-(NiBoc)Trp-H(0.72mmol;1当量)溶于DMF(20ml)中。然后,加入N,N-二异丙基乙胺(259ml;2.1当量)和无水乙酸(749ml;1.1当量)。1小时后,用乙酸乙酯(100ml)稀释混合物并用饱和碳酸氢钠水溶液(100ml)、硫酸氢钾水溶液(100ml,1M)和饱和氯化钠水溶液(50ml)清洗。用硫酸钠干燥有机层,过滤并真空除去溶剂。残余物用快速硅胶色谱纯化,用乙酸乙酯/己烷{5/5}洗脱得到370mg(73%)白色固体Boc-D-(NiBoc)Trp-D-(NiBoc)Trp-C(O)CH3
Boc-D-(NiBoc)Trp-D-(NiBoc)Trp-C(O)CH3(350mg;0.5mmol;1当量)于0℃溶于三氟乙酸(8ml)、苯甲醚(1ml)和硫代苯甲醚(1ml)的混合物中并放置30分钟。真空除去溶剂,残余物与乙醚一起搅拌并将沉淀的TFA,H-D-Trp-D-gTrp-C(O)CH3过滤。
向10ml DMF中,相继加入TFA,H-D-Trp-D-gTrp-C(O)CH3(0.5mmol;1当量)、Boc-Aib-OH(121mg;0.59mmol;1.2当量)、NMM(230μl;4.2当量)和BOP(265mg;1.2当量)。1小时后,用乙酸乙酯(25ml)稀释混合物并用饱和碳酸氢钠水溶液(50ml)、硫酸氢钾水溶液(50ml,1M)和饱和氯化钠水溶液(50ml)清洗。用硫酸钠干燥有机层,过滤并真空除去溶剂。残余物用快速硅胶色谱纯化,用乙酸乙酯洗脱得到249mg(85%)白色泡沫状Boc-Aib-D-Trp-D-gTrp-C(O)CH3
Boc-Aib-D-Trp-D-gTrp-C(O)CH3(249mg;0.42mmol)于0℃溶于三氟乙酸(8ml)、苯甲醚(1ml)和硫代苯甲醚(1ml)的混合物中并放置30分钟。真空除去溶剂,残余物与乙醚一起搅拌并将沉淀的TFA,H-Aib-D-Trp-D-gTrp-C(O)CH3过滤。
产物TFA,H-Aib-D-Trp-D-gTrp-C(O)CH3(80mg;23%)用制备HPLC(水,delta pak,C18,40×100mm,5mm,100A)纯化。
C27H32N6O3,488g·mol-1
1H NMR(200MHZ,DMSO-d6):1.22(s,3H,CH3(Aib));1.44(s,3H,CH3(Aib));1.8(s,3H,C(O)CH3);3.06(m,4H,2(CH2)β);4.6(m,1H,(CH)α);5.6(m,1H,(CH)α′);6.9-7.8(m,10H,2吲哚);7.99(s,2H,NH2(Aib));8.2-8.6(m,3H,3NH(酰胺));10.83(s,2H,2N1H(吲哚))。
质谱(电喷雾),m/z489.32[M+H]+
实施例5  N-Me-Aib-D-Trp-D-gTrp-C(O)CH3
Boc-N-Me-Aib-OH(1.09g;5.04mmol;4当量)溶于二氯甲烷(10ml)中并冷却到0℃。然后,加入二环己基碳二亚胺(520mg;2.52mmol;2当量)。经DCU过滤后,将混合物加入含TFA、H-D-Trp-D-gTrp-C(O)CH3(940mg;1.26mmol;1当量)和三乙胺(580ml;3.3当量)的二氯甲烷(5ml)溶液中。反应混合物缓慢加热到室温并于24小时后停止。用乙酸乙酯(50ml)稀释混合物并用饱和碳酸氢钠水溶液(100ml)、硫酸氢钾水溶液(100ml,1M)和饱和氯化钠水溶液(100ml)清洗。用硫酸钠干燥有机层,过滤并真空除去溶剂。残余物用快速硅胶色谱纯化,用乙酸乙酯/甲醇{9/1}洗脱得到530mg(70%)白色泡沫的Boc-N-Me-Aib-D-Trp-D-gTrp-C(O)CH3
Boc-N-Me-Aib-D-Trp-D-gTrp-C(O)CH3(530mg;0.88mmol)于0℃溶于三氟乙酸(8ml)、苯甲醚(1ml)和硫代苯甲醚(1ml)的混合物中并放置30分钟。真空除去溶剂,残余物与乙醚一起搅拌并将沉淀的TFA,N-Me-Aib-D-Trp-D-gTrp-C(O)CH3过滤。
产物  TFA,N-Me-Aib-D-Trp-D-gTrp-C(O)CH3(220mg;30%)用制备HPLC(水,delta pak,C18,40×100mm,5mm,100A)纯化。
C26H34N6O3,502g·mol-1
1H NMR(200MHZ,DMSO-d6):1.17(s,3H,CH3(Aib));1.4(s,3H,CH3(Aib));1.78(s,3H,C(O)CH3);2.23(s,3H,NCH3);3.15(m,4H,2(CH2)β);4.7(m,1H,(CH)α);5.55(m,1H,(CH)α′);6.9-7.9(m,10H,2吲哚);8.2-8.8(s,4H,NH(胺)et 3 NH(酰胺));10.8(s,2H,2N1H(吲哚))。
质谱(电喷雾),m/z 503.19[M+H]+
实施例6  Pip-D-Trp-D-gTrp-CHO
向5ml DMF中,相继加入TFA、H-D-Trp-D-gTrp-CHO(230mg;0.31mmol;1当量)、Boc-(N4Boc)Pip-OH(130mg;0.38mmol;1.2当量)、NMM(145μl;4.2当量)和BOP(167mg;0.38mmol;1.2当量)。15分钟后,反应完成。用乙酸乙酯(25ml)稀释混合物并用饱和碳酸氢钠水溶液(50ml)、硫酸氢钾水溶液(50ml,1M)和饱和氯化钠水溶液(50ml)清洗。用硫酸钠干燥有机层,过滤并真空除去溶剂得到泡沫的Boc-(N4Boc)Pip-D-Trp-D-gTrp-CHO。
Boc-(N4Boc)Pip-D-Trp-D-gTrp-CHO(0.31mmol)于0℃溶于三氟乙酸(8ml)、苯甲醚(1ml)和硫代苯甲醚(1ml)的混合物中并放置30分钟。真空除去溶剂,残余物与乙醚一起搅拌并将TFA,H-Pip-D-Trp-D-gTrp-CHO过滤。
产物TFA,H-Pip-D-Trp-D-gTrp-CHO(127mg;42%)用制备HPLC(水,deltapak,C18,40×100mm,5μm,100A)纯化。
C28H33N7O3,515g·mol-1
1H RMN(200MHZ,DMSO-d6):1.81(m,2H,CH2(Pip));2.3(m,2H,CH2(Pip));3.1(m,8H,2(CH2)β和2CH2(Pip));4.68(m,1H,(CH)α);5.3和5.73(2m,1H,(CH)α′);6.9-7.7(m,10H,2吲哚);7.98(2s,1H,CHO(甲酰基));8.2-9.2(m,6H,NH2et NH(Pip)et3 NH(酰胺));10.9(m,2H,2N1H(吲哚))。
质谱(电喷雾),m/z516.37[M+H]+,528.27[M+Na]+
实施例7  Pip-D-Trp-D-gTrp-C(O)CH3
向5ml DMF中,相继加入TFA、H-D-Trp-D-gTrp-C(O)CH3(218mg;0.29mmol;1当量)、Boc-(N4Boc)Pip-OH(121mg;0.35mmol;1.2当量)、NMM(135μl;4.2当量)和BOP(155mg;0.38mmol;1.2当量)。15分钟后,反应完成。用乙酸乙酯(25ml)稀释混合物并用饱和碳酸氢钠水溶液(50ml)、硫酸氢钾水溶液(50ml,1M)和饱和氯化钠水溶液(50ml)清洗。用硫酸钠干燥有机层,过滤并真空除去溶剂,得到泡沫状的Boc-(N4Boc)Pip-D-Trp-D-gTrp-C(O)CH3
Boc-(N4Boc)Pip-D-Trp-D-gTrp-C(O)CH3(0.29mol)于0℃溶于三氟乙酸(8ml)、苯甲醚(1ml)和硫代苯甲醚(1ml)的混合物中并放置30分钟。真空除去溶剂,残余物与乙醚一起搅拌并将沉淀的TFA,H-Pip-D-Trp-D-gTrp-C(O)CH3过滤。
产物TFA,H-Pip-D-Trp-D-gTrp-C(O)CH3(135mg;47%)用制备HPLC(水,delta pak,C18,40×100mm,5μm,100A)纯化。
C29H35N7O3,529g·mol-1
1H RMN(200MHZ,DMSO-d6):1.79(m,2H,CH2(Pip));1.81(s,3H,C(O)CH3);2.3(m,2H,CH2(Pip));3.1(m,8H,2(CH2)α和2 CH2(Pip));4.7(m,1H,(CH)α);5.6(m,1H,(CH)α′);6.9-7.8(m,10H,2吲哚);8.2-9(m,6H,NH2和NH(Pip)和3 NH(酰胺));10.85(m,2H,2N1H(吲哚))。
质谱(电喷雾),m/z 530.39[M+H]+,552.41[M+Na]+
实施例8  异哌啶甲酰基-D-Trp-D-gTrp-CHO
向5ml DMF中,相继加入TFA、H-D-Trp-D-gTrp-CHO(250mg;4.1mmol;1当量)、Fmoc-异哌啶甲酰基-OH(144mg;4.1mmol;1.2当量)、NMM(158μl;4.2当量)和BOP(181mg;4.1mmol;1.2当量)。15分钟后,反应完成。用乙酸乙酯(25ml)稀释混合物并用饱和碳酸氢钠水溶液(50ml)、硫酸氢钾水溶液(50ml,1M)和饱和氯化钠水溶液(50ml)清洗。用硫酸钠干燥有机层,过滤并真空除去溶剂得到泡沫状的Fmoc-Isonipecotic-D-Trp-D-gTrp-CHO。
Fmoc-异哌啶甲酰基-D-Trp-D-gTrp-CHO(4.1mmol)溶于DMF(8ml)和哌啶(2ml)的混合物中并放置30分钟。真空除去溶剂,残余物与乙醚一起搅拌并将沉淀的异哌啶甲酰基-D-Trp-D-gTrp-CHO过滤。
产物异哌啶甲酰基-D-Trp-D-gTrp-CHO(81mg;28%)用制备HPLC(水,delta pak,C18,40×100mm,5μm,100A)纯化。
C28H32N6O3,500g·mol-1
1H RMN(200MHZ,DMSO-d6):1.65(m,4H,2CH2(Pip));2.4(m,1H,CH(Pip));2.7-3.3(m,8H,2(CH2)β和2CH2(Pip));4.6(m,1H,(CH)α);5.3和5.7(2m,1H,(CH)α′);6.9-7.7(m,10H,2吲哚);7.97(2s,1H,CHO(甲酰基));8-8.8(m,4H,NH(Pip)和3 NH(酰胺));10.9(m,2H,2N1H(吲哚))。
质谱(电喷雾),m/z501.36[M+H]+
实施例9  异哌啶甲酰基-D-Trp-D-gTrp-C(O)CH3
向5ml DMF中,相继加入TFA、H-D-Trp-D-gTrp-C(O)CH3(250mg;0.33mmol;1当量)、Fmoc-异哌啶甲酰基-OH(141mg;0.4mmol;1.2当量)、NMM(155μl;4.2当量)和BOP(178mg;0.4mmol;1.2当量)。15分钟后,反应完成。用乙酸乙酯(25ml)稀释混合物并用饱和碳酸氢钠水溶液(50ml)、硫酸氢钾水溶液(50ml,1M)和饱和氯化钠水溶液(50ml)清洗。用硫酸钠干燥有机层,过滤并真空除去溶剂得到泡沫状的Fmoc-异哌啶甲酰基-D-Trp-D-grp-C(O)CH3
Fmoc-异哌啶甲酰基-D-Trp-D-gTrp-C(O)CH3(0.33mmol)溶于DMF(8ml)和哌啶(2ml)的混合物中并放置30分钟。真空除去溶剂,残余物与乙醚一起搅拌并将沉淀的异哌啶甲酰基-D-Trp-D-gTrp-C(O)CH3过滤。
产物异哌啶甲酰基-D-Trp-D-gTrp-C(O)CH3(65mg;13%)用制备HPLC(水,delta pak,C18,40×100mm,5μm,100A)纯化。
C29H34N6O3,514g·mol-1
1H RMN(200MHZ,DMSO-d6):1.66(m,4H,2CH2(Pip));1.79(s,3H,C(O)CH3);2.7-3.3(m,8H,2(CH2)β和2 CH2(Pip));4.54(m,1H,(CH)α);5.59(m,1H,(CH)α′);6.9-7.7(m,10H,2吲哚);8-8.6(m,4H,NH(Pip)和3NH(酰胺));10.82(m,2H,2N1H(吲哚))。
质谱(电喷雾),m/z 515.44[M+H]+。
实施例10-62
按照相似方式制备以下化合物:
实施例10  H-Aib-D-Mrp-gMrp-CHO
实施例11  H-Aib-Trp-gTrp-CHO
实施例12  H-Aib-D-Trp-gTrp-CHO
实施例13  H-D-Trp-gTrp-CHO
实施例14  N-Me-D-Trp-gTrp-CHO
实施例15  N-甲基磺酰基-D-Trp-gTrp-CHO
实施例16  N-苯基磺酰基-D-Trp-gTrp-CHO
实施例17  N-(3-甲基-丁酰基)-D-Trp-gTrp-CO-CH3
实施例18  N-(3-甲基-丁酰基)-D-Trp-gTrp-CHO
实施例19  Aib-D-Trp-gTrp-CO-CH2-CH3
实施例20  Aib-D-Trp-gTrp-CO-CH2-CH(CH3)-CH3
实施例21  Aib-D-Trp-gTrp-CO-CH2-苯基
实施例22  Aib-D-Trp-gTrp-CO-哌啶-4-基
实施例23  Aib-D-Trp-gTrp-CO-CH2-吡咯-3-基
实施例24  Aib-D-Trp-gTrp-CO-CH2-CH2-环己基
实施例25  N-Me-Aib-D-Trp-gTrp-CO-CH2-CH3
实施例26  N-Me-Aib-D-Trp-gTrp-CO-CH2-CH(CH3)-CH3
实施例27  N-Me-Aib-D-Trp-gTrp-CO-CH2-苯基
实施例28  N-Me-Aib-D-Trp-gTrp-CO-CH2-吡咯-3-基
实施例29  N-Me-Aib-D-Trp-gTrp-CO-CH2-CH2-环己基
实施例30  Aib-D-Trp-gTrp-CHO
实施例31  N-(3-氨基-3-甲基-丁酰基)-D-Trp-gTrp-CO-CH3
实施例32  N-乙酰基-D-Trp-gTrp-CHO
实施例33  N-乙酰基-D-Trp-gTrp-CO-CH3
实施例34  N-甲酰基-D-Trp-gTrp-CHO
实施例35  N-甲酰基-D-Trp-gTrp-CO-CH3
实施例36  N-(1,1-二甲基-2-氨基-2-酮-乙基)-D-Trp-gTrp-CHO
实施例37  N-(2-氨基-2-甲基-丙基)-D-rp-grp-CHO
实施例38  N-(2-氨基-2-甲基-丙基)-D-Trp-gTrp-CO-CH3
实施例39  N-Me-Aib-D-Trp-D-gTrp-异哌啶甲酰基
实施例40  N-Me-Aib-D-Trp-N-Me-D-gTrp-C(O)CH3
实施例41  H-Aib-D-Trp-N-Me-D-gTrp-C(O)CH3
实施例42  H-Aib-(D)-1-Nal-g-(D)-1-Nal甲酰基
C30H32N4O3,496g·mol-1
1H RMN(200 MHz,DMSO-d6):δ1.14和1.4(2m,6H,2 CH3(Aib));3.17-3.55(m,4H,
2(CH2)β);4.82(m,1H,CHα);5.5和5.82(2m,1H,CHα);7.36-7.64(m,8H);7.83-8
(m,7H);8.25-9.45(m,5H)。
质谱(FAB),m/z497[M+H]+
分析HPLC(Delta Pak 5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/CAN0.1%TFA,梯度0到100% ACN在50分钟内),tr=20.28mm,99%.冷冻干燥化合物。
实施例43  H-Aib-(D)-2-Nal-g-(D)-Nal-甲酰基
C30H32N4O3,496g·mol-1
1H RMN(200MHz,DMSO-d6):δ1.18和1.36(2m,6H,2CH3(Aib));2.84-3.3(m,4H,
2(CH2)β);4.7(m,1H,CHα);5.45和5.73(2m,1H,CHα);7.47-7.51(m,6H);7.76-8.06
(m,11H);8.36-9.11(m,3H)。
质谱(FAB),m/z497[M+H]+
分析HPLC(Delta Pak5μC18 100A,1ml/min,214nm,洗脱剂:H2O/ACN0.1%TFA,梯度0到100% ACN在50分钟内),tr=20.26mm,95%.冷冻干燥化合物。
实施例44  H-Aib-(D)-1-Nal-g-(D)-Nal-甲酰基
C28H31N5O3,485g·mol-1
1H RMN(200MHz,DMSO-d6):δ1.15和1.42(2m,6H,2 CH3(Aib));3.11-3.3和
3.54-3.7(m,4H,2(CH2)β);4.81(m,1H,CHα);5.4和5.74(2m,1H,CHα’);7.06-7.2(m,
3H);7.34-7.65(m,6H);7.91-8.1(m,4H);8.2-8.4(m,1H);8.55-9.5(m,3H);10.95(m,
1H,N1H)。
质谱(FAB),m/z 486[M+H]+
分析HPLC(Delta Pak 5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN0.1%TFA,梯度0到100%ACN在50分钟内),tr=17.33mm,92%.冷冻干燥化合物。
实施例45  H-Aib-(D)-2-Nal-g-(D)-Trp-甲酰基
C28H31N5O3,485g·mol-1
1H RMN(200MHz,DMSO-d6):δ1.19和1.45(2m,6H,2CH3(Aib));2.93-3.3(m,4H,
2(CH2)β);4.71(m,1H,CHα);5.35和5.7(2m,1H,CHα′);7.05-7.1(m,2H);7.2-7.34(m,
1H);7.47-7.53(m,4H);7.64(m,1H);7.78-8(m,8H);8.48-9.37(m,2H);10.88-11.04
(m,1H,N1H)。
质谱(FAB),m/z 486[M+H]+
分析HPLC(Delta Pak 5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN0.1%TFA,梯度0到100%ACN在50分钟内),tr=17.30mm,95%.冷冻干燥化合物。
实施例46  H-Aib-(D)-Trp-g-(D)-1-Nal-甲酰基
C28H31N5O3,485g·mol-1
1H RMN(200MHz,DMSO-d6):δ1.23和1.41(2m,6H,2CH3(Aib));2.92-3.15(m,
2H,(CH2)β);3.4-3.6(m,2H,(CH2)β);4.63(m,1H,CHα′);5.44 and 5.79(2m,1H,CHα′);
6.99-7.15(m,3H);7.33(m,1H);7.45-8.1(m,11H);8.34-9.37(m,3H);10.83(m,1H)。
质谱(FAB),m/z 486[M+H]+
分析HPLC(对称屏蔽3.5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN 0.1%TFA,梯度0到60% ACN在3分钟内,随后60-100% CAN在3分钟内),tr=10.00mm,99%.冷冻干燥化合物。
实施例47  H-Aib-D-Trp-g-D-2-Nal-甲酰基
C28H31N5O3,485g·mol-1
1H RMN(200MHz,DMSO-d6):δ1.22和1.43(2m,6H,2CH3(Aib));2.85-3.3(m,4H,
2(CH2)β);4.64(m,1H,CHα);5.37和5.72(2m,1H,CHα′);6.97-7.13(m,3H);7.32
(m,1H);7.44-7.54(m,3H);7.66(d,1H);7.78(m,1H);7.86-8.02(m,7H);8.33-9.4(m,
2H);10.82(m,1H,N1H)。
质谱(FAB),m/z486[M+H]+
分析HPLC(Delta Pak 5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN 0.1%TFA,梯度0到100% ACN在25分钟内),tr=9.00mm,99%.冷冻干燥化合物。
实施例48  H-Aib-(D)-Trp-g-(D)-3-(R/S)Dht-甲酰基
C26H32N6O3,476g·mol-1
1H RMN(400MHz,DMSO-d6):δ1.12(s,3H,CH3(Aib));1.32(s,3H,CH3(Aib));1.73
(m,1H,CH2);2.01(m,1H,CH2);2.9(m,1H);3.03(m,1H);3.13(m,2H);3.54(m,1H);
4.47(m,1H,CHα);5.10和5.52(2m,1H,CHα′);6.71-8.83(m,16H,5H(Trp),4H(Dht),3
NH(酰胺),NH和NH2(胺),甲酰);10.7(m,1H,N1H)。
质谱(电喷雾),m/z477.46[M+H]+,499.42[M+Na]+,953.51[2M+H]+
分析HPLC(Delta Pak 5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN0.1%TFA,梯度0到100%ACN在50分钟内),tr=9.40mm,98%.冷冻干燥化合物。
实施例49  H-Aib-(D)-3(R/S)Dht-g-(D)-Nal-甲酰基
C26H32N6O3,476g·mol-1
RMN1H(400MHz,DMSO-d6):δ1.58(s,3H,CH3(Aib));1.85(m,1H,CH2);2.2(m,1H,
CH2);3.1(d,2H);3.35(m,2H);3.56(m,1H);3.7(m,1H);4.5(m,1H,CHα);5.33 and 5.71
(2m,1H,CHα′);6.88-8.91(m,16H,5H(Trp),4H(Dht),3NH(酰胺),NH和NH2
(胺),甲酰);10.92和10.97(2s,1H,N1H)。
质谱(电喷雾),m/z 477.33[M+H]+,499.42[M+Na]+,953.51[2M+H]+
分析HPLC(Delta Pak 5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN 0.1%TFA,梯度0到100% ACN在50分钟内),tr=10.35mm,98%.冷冻干燥化合物。
实施例50  N-Me-Aib-(D)-Trp-g-(D)-3(R/S)Dht-乙酰基
C28H36N6O3,504g·mol-1
1H RMN(400MHz,DMSO-d6):δ1.42(s,3H,CH3(Aib));1.63(s,3H,CH3(Aib);2.72
(m,3H,乙酰);2.4(m,2H,CH2);2.5(m,3H,NCH3);3.2-3.5(m,4H);3.85(m,1H);4.85
(m,1H,CHα);5.76(m,1H,CHα′);7.04-8.86(m,14H,5H(Trp),4H(Dht),3NH(酰胺),
2NH(胺));11.02(2s,1H,N1H)。
质谱(电喷雾),m/z 505.31[M+H]+,527.70[M+Na]+
分析HPLC(Delta Pak 5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN0.1%TFA,梯度0到100% ACN在50分钟内),tr=10.20mm,98%.冷冻干燥化合物。
实施例51  N-Me-Aib-(D)-3(R/S)Dht-g-(D)-Trp-乙酰基
C28H36N6O3,504g·mol-1
1H RMN(400MHz,DMSO-d6);δ1.58(s,6H,2CH3(Aib));1.81(m,3H,乙酰);1.98
(m,1H,CH2);2.24(m,1H,CH2);2.54(m,3H,NCH3);3.08(d,2H);3.31(m,2H);3.4(m,
1H);3.59(m,1H);3.71(m,1H);4.52(m,1H,CHα′);5.61(m,1H,CHα′);6.9-8.92(m,
14H,5H(Trp),4H(Dht),3NH(酰胺),2NH(胺));10.88(s,1H,N1H)。
质谱(电喷雾),m/z 505.43[M+H]+,527.52[M+Na]+
分析HPLC(Delta Pak 5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN0.1%TFA,梯度0到100% ACN在50分钟内),tr=11mm,98%.冷冻干燥化合物。
实施例52  N(Me)2-Aib-(D)-Trp-(D)-gTrp-甲酰基
C28H36N6O3,502g·mol-1
1H RMN(400MHz,DMSO-d6):δ1.2(s,3H,CH3(Aib));1.39(s,3H,CH3(Aib));2.29
(m,3H,NCH3);2.99-3.33(m,4H,2(CH2)β);4.68(m,1H,CH)α);5.3 and 5.69(m,1H,
CH)α′);6.97-7.72(m,10H,2吲哚);7.97(2s,1H,甲酰);8.2-9.47(m,3H,3NH
(酰胺));10.85(m,2H,2NH(吲哚))。
质谱(电喷雾),m/z503.45[M+H]+
分析HPLC(对称屏蔽3.5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN0.1%TFA,梯度0到100% ACN在15分钟内),tr=6.63mm,99%.冷冻干燥化合物。
实施例53  N(Me)2-Aib-D-Trp-D-gTrp-乙酰基
C29H36N6O3,516g·mol-1
1H RMN(200MHz,DMSO-d6):δ1.22(s,3H,CH3(Aib));1.4(s,3H,CH3(Aib));1.8(s,
3H,乙酰);2.28(d,3H,NCH3);2.96-3.22(m,4H,2(CH2)β);4.7(m,1H,(CH)α);5.60
(m,1H,(CH)α′);6.98-7.75(m,10H,2吲哚);8.2-9.47(m,3H,3NH(酰胺));10.84
(m,2H,2NH(吲哚))。
质谱(电喷雾),m/z517.34[M+H]+。
分析HPLC(对称屏蔽3.5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN0.1%TFA,梯度0到100%ACN在15分钟内),tr=7.07mm,99%.冷冻干燥化合物。
实施例54  H-Acc3-(D)-Trp-(D)-gTrp-甲酰基
C26H28N6O3,472g·mol-1
1H RMN(400MHz,DMSO-d6):δ1.11 and 1.5(2m,4H,2CH2(Acc3));2.91-3.12(m,
4H,
2(CH2)β);4.6(m,1H,CHα);5.3 and 5.7(2m,1H,CHα′);6.97-7.17(m,6H,吲哚);7.32
(m,2H,吲哚);7.62-7.72(m,2H,吲哚);7.97(2s,1H,甲酰);8.27-8.92(m,5H,3
NH(酰胺)and NH2(胺));10.80-10.90(4s,2H,2N1H)。
质谱(电喷雾),m/z473.22[M+H]+,495.15[M+Na]+;945.47[2M+H]+;967.32[2M+Na]+
分析HPLC(Delta Pak 5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN 0.1%TFA,梯度0到100% ACN在50分钟内),tr=14.20mm,98%冷冻干燥化合物。
实施例55  H-Acc5-(D)-Trp-(D)-gTrp-甲酰基
C26H28N6O3,472g·mol-1
1H RMN(400MHz,DMSO-d6):δ1.51和2.31(m,8H,4CH2(Acc5));2.97-3.18(m,
4H,2(CH2)β);4.64(m,1H,CHα);5.31和5.69(2m,1H,CHα′);6.96-7.34(m,8H,
吲哚);7.62-7.74(m,2H,吲哚);7.96(m,3H,甲酰和NH2(胺));8.48-8.96(m,
3H,3NH(酰胺);10.80-10.90(4s,2H,2 N1H)。
质谱(电喷雾),m/z 501.31[M+H]+,523.42[M+Na]+;101.37[2M+H]+
分析HPLC(Delta Pak 5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN 0.1%TFA,梯度0到100% ACN在50分钟内),tr=15.35mm,98%冷冻干燥化合物。
实施例56  H-Acc6-(D)-Trp-(D)-gTrp-甲酰基
C26H28N6O3,472g·mol-1
1H RMN(400MHz,DMSO-d6):δ1.29-1.57(m,8H,4CH2(Acc6));1.89和2.04(2m,
2H,CH2(Acc6));2.95-3.17(m,4H,2(CH2)β);4.61(m,1H,CHα);5.3 and 5.68(2m,1H,
CHα′);6.95-7.21(m,6H,吲哚);7.32(m,2H,吲哚s);7.6(m,2H,吲哚);7.74(m,
2H,吲哚);7.96(m,3H,甲酰和NH2(胺));8.18-8.67(m,5H,3NH(酰胺));
10.77-10.89(4s,2H,2N1H)。
质谱(电喷雾),m/z 515.11[M+H]+
分析HPLC(Delta Pak 5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN 0.1%TFA,梯度0到100% ACN在50分钟内),tr=15.9mm,97%冷冻干燥化合物。
实施例57  H-Dpg-(D)-Trp-(D)-gTrp-甲酰基
C26H28N6O3,530g·mol-1
1H RMN(400MHz,DMSO-d6):δ0(m,1H,Dpg);0.40(m,3H,Dpg);0.70(m,4H,
Dpg);1.01-1.51(m,5H,Dpg);1.76(m,1H,Dpg);2.82-2.95(m,4H,2(CH2)β);4.59(m,
1H,CHα);5.3和5.54(2m,1H,CHα′);6.81-7.09(m,6H,吲哚);7.19(m,2H,吲哚);
7.48(m,1H,吲哚);7.6-7.68(m,5H,1H(吲哚),甲酰和NH2(胺);7.83-8.82
(m,3H,3NH(酰胺));10.69和10.76(2m,2H,2N1H)。
质谱(电喷雾),m/z 531.24[M+H]+
分析HPLC(Delta Pak 5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN 0.1%TFA,梯度0到100% ACN在50分钟内),tr=15.35mm,98%冷冻干燥化合物。
实施例58  H-Aib-(D)-Trp-(D)-gTrp-C(O)NHCH2CH3
C26H25N7O3,517g·mol-1
1H RMN(400MHz,DMSO-d6):δ0.94(t,3H,NHCH2C H 3);1.01(s,3H,CH3(Aib));
1.08(s,3H,CH3(Aib));1.8(sl,2H,NH2);2.95-3.15(m,6H,2(CH2)β和NHCH2CH3);
4.43(m,1H,CHα);5.39(m,1H,CHα′);6.02(m,1H);6.22(m,1H);6.9-7.56(m,10H,
吲哚);8(m,1H);8.31(m,1H);10.77和10.79(2s,2H,2N1H)。
质谱(电喷雾),m/z 518.4[M+H]+,540.3[M+Na]+
分析HPLC(对称屏蔽3.5μ C18 100A,1ml/min,214nm,洗脱剂:H2O/ACN0.1%TFA,梯度0到100%ACN在15分钟内),tr=7.12mm,99%冷冻干燥化合物。
实施例59  N-Me-Aib-(D)-Trp-(D)-gTrp-C(O)NHCH2CH3
实施例60  H-Aib-(R)-Me-Trp-(D)-gTrp-甲酰基
实施例61  H-Aib-(D)-Trp-(R)-Me-gTrp-甲酰基
实施例62  H-Me-Aib-(D)-Trp-(R)-Me-gTrp-乙酰基
实施例63  在幼小大鼠中评价新的生长激素促分泌剂的生长激素释放活性
动物
使用10天龄的雄性Sprague Dawley大鼠,重约25克。
收到出生后第五天的幼鼠并在控制的条件下(22±2℃,65%湿度和人工光照06.00到20.00小时)饲养。饲养圈中任意提供标准的干燥食物和水。
实验方法
在实验前1小时,将幼鼠从其饲养圈中分别取出并随机分组,每组八只。
幼鼠经皮下急性注射100μl溶剂(DMSO,生理盐水中的最终稀释度1∶300)、hexarelin(Tyr-Ala-His-D-Mrp-Ala-Trp-D-Phe-Lys-NH2,作为参照药物)或新化合物(300μg/Kg)并在15分钟后断头处死。
收集躯干血并立即离心。血浆样品储存在-20℃直至用于血浆中GH浓度的分析测定。
使用National Institute of Diabertes,Digestive and KidneyDiseases(NIDDK) of Natioal Institute of Health U.S.A.提供的材料,用RIA法测定血浆中生长激素的浓度。
数值按照NIDDK-rat-GH-RP-2标准(换算21U/mg)用ng/ml血浆表示。
大鼠GH的可检测最小值是约1.0ng/ml,批内测试变异约6%。
若干实验系列得到的结果列于表1到10,其中测定了鼠的体内活性。
表1
实施例  结构  GH ng/ml
 1  H-Aib-D-Trp-D-gTrp-CHO  158.8±39.4
 13  H-Aib-D-Trp-gTrp-CHO  58±6.3
 溶剂  15.0±8.0
 HEXARELIN  Tyr-Ala-His-D-Mrp-Ala-Trp-D-Phe-Lys-NH2  202±32.7
表2
实施例  结构  GH ng/ml
 3  H-Me-Aib-D-Trp-D-gTrp-CHO  86.6±12.6
 4  H-Aib-D-Trp-D-gTrp-C(O)CH3  104.7±13.5
 5  N-Me-Aib-D-Trp-D-gTrp-C(O)CH3  175.5±37.2
 溶剂  20.7±0.9
 HEXARELIN  Tyr-Ala-His-D-Mrp-Ala-Trp-D-Phe-Lys-NH2  134.5±27.2
表3
实施例  结构  GH ng/ml
 6  Pip-D-Trp-D-gTrp-CHO  109.7±10.1
 7  Pip-D-Trp-D-gTrp-C(O)CH3  53.1±6.6
 8  异哌啶甲酰基-D-Trp-D-gTrp-CHO  94.2±8.6
 9  异哌啶甲酰基-D-Trp-D-gTrp-C(O)CH3  61.2±10.8
 19  Aib-D-Trp-gTrp-CO-CH2-CH3  79.8±22.4
 20  Aib-D-Trp-gTrp-CO-哌啶-4-基  153.6±30.6
 溶剂  22.3±5
 HEXARELIN  Tyr-Ala-His-D-Mrp-Ala-Trp-D-Phe-Lys-NH2  114.7±8.4
表4
实施例  结构  GH ng/ml
 39  N-Me-Aib-D-Trp-D-gTrp-异哌啶甲酰基  97.1±21.0
 40  N-Me-Aib-D-Trp-N-Me-D-gTrp-C(O)CH3  188.2±28.5
 41  H-Aib-D-Trp-N-Me-D-gTrp-C(O)CH3  75.4±15.0
 溶剂  10.55±2.65
 HEXARELIN  Tyr-Ala-His-D-Mrp-Ala-Trp-D-Phe-Lys-NH2  114.5±12.9
表5
 实施例  结构 GH ng/ml
 42  H-Aib-(D)-1-Nal-g-(D)-1-Nal-甲酰基 25.05±06.00
 43  H-Aib-(D)-2-Nal-g-(D)-2-Nal-甲酰基 37.33±19.74
 44  H-Aib-(D)-1-Nal-g-(D)-1-Trp-甲酰基 15.04±03.30
 45  H-Aib-(D)-2-Nal-g-(D)-1-Trp-甲酰基 13.91±03.87
 46  H-Aib-(D)-Trp-g-(D)-1-Nal-甲酰基 8.26±01.09
 47  H-Aib-(D)-Trp-g-(D)-2-Nal-甲酰基 9.04±04.03
 溶剂 6.49±01.18
 HEXARELIN 276.01±23.5
表6
 实施例  结构 GH ng/ml
 48  H-Aib-(D)-Trp-g-3(R/S)Dht-甲酰基 17.49±2.40
 49  H-Aib-(D)-3(R/S)Dht-(D)-Trp-甲酰基 24.35±4.85
 50  N-Me-Aib-(D)-Trp-(D)-3(R/S)Dht-乙酰基 11.17±1.35
 51  H-Me-Aib-(D)-3(R/S)Dht-(D)-Trp-乙酰基 19.28±4.16
 溶剂 14.65±0.92
 HEXARELIN 91.61±4.09
表7
 实施例  结构 GH ng/ml
 52  N(Me)2-Aib-(D)-Trp-(D)-gTrp-甲酰基 121.43±29
 53  N(Me)2-Aib-(D)-Trp-(D)-gTrp-乙酰基 26.80±5.64
 溶剂 7.89±1.77
 HEXARELIN 172.5±38.53
表8
 实施例  结构  GH ng/ml
 60  H-Aib-(R)-Me-Trp-(D)-gTrp-甲酰基  21.02±3.43
 61  H-Aib-(D)-Trp-(R)-Me-gTrp-甲酰基  152.28±43.76
 62  H-Me-Aib-(D)-Trp-(R)-Me-gTrp-乙酰基  171.78±10.32
 溶剂  7.89±1.77
 HEXARELIN  172.5±38.53
表9
实施例  结构  GH ng/ml
 54  H-Acc3-(D)-Trp-(D)-gTrp-甲酰基  7.89±3.20
 55  H-Acc5-(D)-Trp-(D)-gTrp-甲酰基  11.46±1.18
 56  H-Acc6-(D)-Trp-(D)-gTrp-甲酰基  8.49±0.40
 57  H-Dpg-(D)-Trp-(D)-gTrp-甲酰基  18.38±2.88
 溶剂  17.32±1.70
 HEXARELIN  89.91±3.04
表10
 实施例  结构  GH ng/ml
 58  H-Aib-(D)-Trp-(D)-gTrp-C(O)NHCH2CH3  376.48±43.24
 59  N-Me-Aib-(D)-Trp-(D)-gTrp-C(O)NHCH2CH3  179.53±24.65
 溶剂  7.89±1.77
 HEXARELIN  172.5±38.53
另外,评价实施例1化合物(H-Aib-D-Trp-D-gTrp-CHO)对狗口服活性与时间的关系(1mg/Kg,口服)。使用受过良好训练的任意性别、>10岁、体重10-15Kg的小猎犬。动物在饲养圈中随意喂食正常的干燥食物和水,并从7点开始12小时光照和12小时黑暗的生活制度。让从前一天16:00开始禁食的狗口服所述化合物。服用前20分钟、服用时、服用后15、30、60、90、120和180分钟后采集血液样品。结果见表11。
表11
    实施例  狗名
    1  DAKOTA JORMA  RAZDEGAN   FORRESTLEE   MARKUS     TAYLOR   平均值     SEM
    t(min)  GH浓度(ng/ml)
    -20   0.48   3.58   2.14     1.43     2.45     2.32   2.07     0.38
    0   0.35   2.75   1.64     2.01     2.55     1.41   1.79     1.03
    15   2.11   8.91   3.58     6.38     6.11     4.8   5.32     1.02
    30   0.54   6.85   6.37     8.48     6.9     3.89   5.5     1.07
    60   0.17   2.65   3.02     4.41     6.51     4.34   3.52     0.84
    90   0.4   2.47   2.61     6.42     5.18     4.43   3.59     0.66
    120   3.58   2.48   1.94     3.71     4.54     4.28   3.42     0.38
    180   3.46   2.82   1.49     3.18     4.12     3.18   3.04     0.36
    AUC   328.53   658.38   510.64     888.91     944.26     721.34   675.35     94.47
SEM=标准差
AUC=曲线下面积

Claims (14)

1.式I的化合物,
其中*表示碳原子,当其是手性碳原子时,具有R或S构型,R1和R3之一
是氢原子而另一个是式II的基团
Figure A0181049100022
R2是氢原子、直链或支链的C1-C6烷基、芳基、杂环基、环烷基、(CH2)n-芳基、(CH2)n-杂环基、(CH2)n-环烷基、甲磺酰基、苯磺酰基、C(O)R8基团或下式III-VIII中的一个基团:
R4是氢原子,或直链或支链的C1-C4烷基,R5是氢原子、直链或支链的C1-C4烷基、(CH2)n-芳基、(CH2)n-杂环基、(CH2)n-环烷基或氨基,R6和R7各自独立地是氢原子,或直链或支链的C1-C4烷基,R8是直链或支链的C1-C6烷基,R9、R10、R11、R12、R13、R14、R15和R16各自独立地是氢原子,或直链或支链的C1-C4烷基,m是0、1或2以及n是1或2。
2.权利要求1的化合物,其中R2是氢原子,R3是式II的基团和m是0。
3.权利要求2的化合物,其中直链或支链C1-C4烷基是甲基,直链或支链C1-C6烷基是甲基、乙基或异丁基,芳基是苯基或萘基,环烷基是环己基,以及杂环基是4-哌啶基或3-吡咯基。
4.下式化合物:
Figure A0181049100041
5.下式化合物:
Figure A0181049100042
6.下式化合物:
Figure A0181049100043
7.药物组合物,含有权利要求1的化合物。
8.权利要求7的组合物,其含有药物可接受的载体。
9.权利要求7的组合物,其含有其它的生长激素促分泌剂。
10.提高哺乳动物血浆中生长激素水平的方法,包括向哺乳动物给药治疗有效量的权利要求1的化合物。
11.治疗生长激素分泌不足的方法,包括向哺乳动物给药治疗有效量的权利要求1的化合物。
12.治疗儿童生长缓慢的方法,包括向病人给药治疗有效量的权利要求1的化合物。
13.治疗特别是在老年患者中与生长激素分泌不足有关的代谢疾病的方法,包括向病人给药治疗有效量的权利要求1的化合物。
14.促进伤口愈合、从外科手术恢复或从虚弱疾病恢复的方法,包括给药治疗有效量的权利要求1的化合物。
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