[go: up one dir, main page]

CN106632303A - Preparation method of 6-thiazolylindole derivative - Google Patents

Preparation method of 6-thiazolylindole derivative Download PDF

Info

Publication number
CN106632303A
CN106632303A CN201710014283.9A CN201710014283A CN106632303A CN 106632303 A CN106632303 A CN 106632303A CN 201710014283 A CN201710014283 A CN 201710014283A CN 106632303 A CN106632303 A CN 106632303A
Authority
CN
China
Prior art keywords
prepare compound
reaction
solvent
temperature
xylene
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710014283.9A
Other languages
Chinese (zh)
Inventor
邓泽平
李书耘
陈芳军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Huateng Pharmaceutical Co Ltd
Original Assignee
Hunan Huateng Pharmaceutical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Huateng Pharmaceutical Co Ltd filed Critical Hunan Huateng Pharmaceutical Co Ltd
Priority to CN201710014283.9A priority Critical patent/CN106632303A/en
Publication of CN106632303A publication Critical patent/CN106632303A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D417/00Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/02Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
    • C07D417/04Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/55Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The present invention discloses a preparation method of a 6-thiazolylindole derivative of tert-butyl 2-(6-thiazolyl-1H-indol-3-yl) ethylcarbamic acid. 6-thiazolylindole is used as a starting raw material and friedel-crafts reaction, amidation, reduction and t-butyloxycarboryl protection reaction are conducted to get the target products. The compound is an important pharmaceutical intermediate.

Description

A kind of preparation method of 6- thiazolyls indole derivatives
Technical field
The present invention relates to a kind of novel processing step of medicine intermediate, more particularly to a kind of 6- thiazolyls indole derivatives The preparation method of tert-butyl group 2- (6- thiazolyl -1H- indol-3-yls) ethyl carbamic acid.
Technical background
Compound tert-butyl group 2- (6- thiazolyl -1H- indol-3-yls) ethyl carbamic acid, structural formula is:
The derivative of this compound tert-butyl group 2- (6- thiazolyl -1H- indol-3-yls) ethyl carbamic acids and correlation is in medicine Have in thing chemistry and organic synthesis and be widely used.Current tert-butyl group 2- (6- thiazolyl -1H- indol-3-yls) ethylamino first The synthesis of acid is more difficult.Accordingly, it would be desirable to develop a raw material be easy to get, it is easy to operate, react easily controllable, overall yield is suitable Synthetic method.
The content of the invention
The invention discloses one kind prepares the side of tert-butyl group 2- (6- thiazolyl -1H- indol-3-yls) ethyl carbamic acid Method, with 6- thiazolyl indoles as initiation material, through Friedel-Crafts reaction, amidatioon, reduction, tertbutyloxycarbonyl protection reaction mesh is obtained Mark product 5, synthesis step is as follows:
(1) with 6- thiazolyl indoles as initiation material, 2 are obtained through Friedel-Crafts reaction;
(2) amidation process is carried out 2, obtains 3;
(3) carry out reduction reaction 3 and obtain 4;
(4) carry out tertbutyloxycarbonyl protection reaction 4 and obtain 5;
One preferred embodiment in, the lewis acid used by described Friedel-Crafts reaction prepare compound 2 be selected from trichlorine Change aluminium;Reagent used by described amidation process prepare compound 3 is selected from ammoniacal liquor;Described reduction reaction prepare compound 4 Reducing agent used is selected from lithium aluminium hydride;Reagent used by described tertbutyloxycarbonyl protection reaction prepare compound 5 is selected from two Dimethyl dicarbonate butyl ester.
One preferred embodiment in, the solvent used by described Friedel-Crafts reaction prepare compound 2 be selected from dichloromethane; Solvent used by described amidation process prepare compound 3 is selected from water;It is molten used by described reduction reaction prepare compound 4 Agent is selected from tetrahydrofuran;Solvent used by described tertbutyloxycarbonyl protection reaction prepare compound 5 is selected from dichloromethane.
One preferred embodiment in, the reaction temperature used by described Friedel-Crafts reaction prepare compound 2 is solvent Reflux temperature;Temperature used by described amidation process prepare compound 3 is the room temperature of solvent;It is prepared by described reduction reaction Temperature used by compound 4 is the reflux temperature of solvent;Temperature used by described tertbutyloxycarbonyl protection reaction prepare compound 5 Degree is room temperature.
The present invention relates to a kind of preparation method of tert-butyl group 2- (6- thiazolyl -1H- indol-3-yls) ethyl carbamic acid, Currently without other Patents documents reports.
The present invention is further described by the following embodiment, and these descriptions are not present invention to be made into one The restriction of step.It should be understood by those skilled in the art that the equivalent that the technical characteristic of the present invention is made, or change accordingly Enter, still fall within protection scope of the present invention.
Specific embodiment mode
Embodiment 1
(1) synthesis of 2- (6- thiazolyl -1H- indol-3-yls) -2- oxo chloroacetic chlorides
40g 6- thiazolyl indoles is added in 450ml anhydrous methylene chlorides, 15g alchlors are added, 60g is added Oxalyl chloride, is heated to reflux 2 hours, is cooled to room temperature, adds water, point liquid, drying, concentration, the isolated 47g of residue upper prop 2- (6- thiazolyl -1H- indol-3-yls) -2- oxo chloroacetic chlorides.
(2) synthesis of 2- (6- thiazolyl -1H- indol-3-yls) -2- oxoaGetamides
45g2- (6- thiazolyl -1H- indol-3-yls) -2- oxo chloroacetic chlorides are added to 100ml water with 500ml ammoniacal liquor In mixture, it is stirred at room temperature 4 hours, adds ethyl acetate extraction, divide liquid, drying, concentration, silica gel post separation is obtained on residue 32g 2- (6- thiazolyl -1H- indol-3-yls) -2- oxoaGetamides.
(3) synthesis of 2- (6- thiazolyl -1H- indol-3-yls) ethamine
30g 2- (6- thiazolyl -1H- indol-3-yls) -2- oxoaGetamides are added to 200ml anhydrous tetrahydro furans In, 16g Lithium Aluminium Hydrides are added, stirring 8 hours is heated to reflux, room temperature is cooled to, sodium hydrate aqueous solution is added, add acetic acid second Ester is extracted, and is dried, is concentrated, and silica gel post separation obtains 16g 2- (6- thiazolyl -1H- indol-3-yls) ethamine on residue.
(4) synthesis of tert-butyl group 2- (6- thiazolyl -1H- indol-3-yls) ethyl carbamic acid
15g 2- (6- thiazolyl -1H- indol-3-yls) ethamine is added in 150ml dichloromethane, the carbon of 18g bis- is added Sour di tert butyl carbonate, adds 0.5g 4- dimethylamino pyridines, is stirred at room temperature 10 hours, and concentration removes dichloromethane, on residue Silica gel post separation obtains 12g tert-butyl group 2- (6- thiazolyl -1H- indol-3-yls) ethyl carbamic acid.

Claims (6)

1. one kind prepares 6- thiazolyl indole derivatives tert-butyl group 2- (6- thiazolyl -1H- indol-3-yls) ethyl carbamic acid Preparation method, with 6- thiazolyl indoles as initiation material, through Friedel-Crafts reaction, amidatioon, reduction, tertbutyloxycarbonyl protection reaction Target product 5 is obtained, synthetic route is as follows,
2. method according to claim 1, it is characterized by described 4 steps reaction is,
(1) with 6- thiazolyl indoles as initiation material, 2 are obtained through Friedel-Crafts reaction;
(2) amidation process is carried out 2, obtains 3;
(3) carry out reduction reaction 3 and obtain 4;
(4) carry out tertbutyloxycarbonyl protection reaction 4 and obtain 5;
3. method according to claim 1, it is characterised in that the lewis acid used by described Friedel-Crafts reaction prepare compound 2 The mixture of one or more in alchlor, ferric trichloride, zinc chloride, stannic chloride;Described amidation process system One or two mixture of the reagent used by standby compound 3 in ammonia, ammoniacal liquor;Described reduction reaction prepares chemical combination Reducing agent used by thing 4 is in sodium borohydride, potassium borohydride, lithium borohydride, sodium cyanoborohydride, lithium aluminium hydride, borine The mixture of one or more;Reagent used by described tertbutyloxycarbonyl protection reaction prepare compound 5 is selected from two carbonic acid two The tert-butyl ester.
4. method according to claim 1, it is characterised in that the solvent used by described Friedel-Crafts reaction prepare compound 2 is selected from Methyl alcohol, ethanol, normal propyl alcohol, isopropanol, tetrahydrofuran, dichloromethane, toluene, ortho-xylene, paraxylene, meta-xylene, N, The mixture of one or more in dinethylformamide, DMAC N,N' dimethyl acetamide;Described amidation process preparationization It is solvent selected from methanol, ethanol, normal propyl alcohol, isopropanol, tetrahydrofuran, dichloromethane, toluene, ortho-xylene used by compound 3, right The mixture of one or more in dimethylbenzene, meta-xylene, N,N-dimethylformamide, DMAC N,N' dimethyl acetamide, water;Institute Solvent selected from methanol, ethanol, normal propyl alcohol, isopropanol, tetrahydrofuran, the dichloromethane used by reduction reaction prepare compound 4 stated Alkane, toluene, ortho-xylene, paraxylene, meta-xylene, N,N-dimethylformamide, DMAC N,N' dimethyl acetamide, trichlorine oxygen The mixture of one or more in phosphorus, thionyl chloride;It is molten used by described tertbutyloxycarbonyl protection reaction prepare compound 5 Agent is selected from methyl alcohol, ethanol, normal propyl alcohol, isopropanol, tetrahydrofuran, dichloromethane, toluene, ortho-xylene, paraxylene, a diformazan The mixture of one or more in benzene, N,N-dimethylformamide, DMAC N,N' dimethyl acetamide.
5. method according to claim 1, it is characterised in that the reaction temperature used by described Friedel-Crafts reaction prepare compound 2 It is the reflux temperature of 0 DEG C~solvent;Temperature used by described amidation process prepare compound 3 is the backflow of 0 DEG C~solvent Temperature;Temperature used by described reduction reaction prepare compound 4 is the reflux temperature of 0 DEG C~solvent;Described tertiary butyloxycarbonyl Temperature used by base protection reaction prepare compound 5 is the reflux temperature of 0 DEG C~solvent.
6. method according to claim 1, it is characterised in that the reaction temperature used by described Friedel-Crafts reaction prepare compound 2 It is the reflux temperature of solvent;Temperature used by described amidation process prepare compound 3 is the room temperature of solvent;Described reduction Temperature used by reaction prepare compound 4 is the reflux temperature of solvent;Described tertbutyloxycarbonyl protection reaction prepare compound 5 Temperature used is room temperature.
CN201710014283.9A 2017-01-09 2017-01-09 Preparation method of 6-thiazolylindole derivative Pending CN106632303A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710014283.9A CN106632303A (en) 2017-01-09 2017-01-09 Preparation method of 6-thiazolylindole derivative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710014283.9A CN106632303A (en) 2017-01-09 2017-01-09 Preparation method of 6-thiazolylindole derivative

Publications (1)

Publication Number Publication Date
CN106632303A true CN106632303A (en) 2017-05-10

Family

ID=58842850

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710014283.9A Pending CN106632303A (en) 2017-01-09 2017-01-09 Preparation method of 6-thiazolylindole derivative

Country Status (1)

Country Link
CN (1) CN106632303A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025147509A1 (en) * 2024-01-03 2025-07-10 Kymera Therapeutics, Inc. Stat6 inhibitors and uses thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1610547A (en) * 2001-03-29 2005-04-27 伊莱利利公司 N-(2-arylethyl)benzylamines as antagonists of the 5-HT6 receptor
CN102307868A (en) * 2009-02-04 2012-01-04 詹森药业有限公司 Indole derivatives as anticancer agents
CN103923135A (en) * 2014-04-28 2014-07-16 南京靖龙药物研发有限公司 Deuterated 5-hydroxy tryptophan glucoside derivatives and preparation method thereof
CN104292145A (en) * 2014-10-12 2015-01-21 湖南华腾制药有限公司 Preparation method of 6-bromoindole derivative

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1610547A (en) * 2001-03-29 2005-04-27 伊莱利利公司 N-(2-arylethyl)benzylamines as antagonists of the 5-HT6 receptor
CN102307868A (en) * 2009-02-04 2012-01-04 詹森药业有限公司 Indole derivatives as anticancer agents
CN103923135A (en) * 2014-04-28 2014-07-16 南京靖龙药物研发有限公司 Deuterated 5-hydroxy tryptophan glucoside derivatives and preparation method thereof
CN104292145A (en) * 2014-10-12 2015-01-21 湖南华腾制药有限公司 Preparation method of 6-bromoindole derivative

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025147509A1 (en) * 2024-01-03 2025-07-10 Kymera Therapeutics, Inc. Stat6 inhibitors and uses thereof

Similar Documents

Publication Publication Date Title
CN104292145A (en) Preparation method of 6-bromoindole derivative
CN101717359B (en) Method for synthesizing indapamide
CN103333111A (en) Preparation method of lorcaserin hydrochloride
CN114685468A (en) Intermediate compound of medicine for treating hysteromyoma and preparation method thereof
CN102395591A (en) Method for preparing prasugrel
CN108689866B (en) Synthesis method of (R) -3-aminobutanol
CN106632303A (en) Preparation method of 6-thiazolylindole derivative
CN113861062A (en) A kind of synthetic method of N-(8-[2-hydroxybenzoyl]-amino) sodium octanoate
CN107216326B (en) The synthetic method of (1,2,3- triazole) [1,5-f] phenanthridines -10- carboxylic acid ethyl ester compound
CN105461550A (en) Preparation method of p-anisoyl chloride
CN106831529A (en) A kind of preparation method of trifluoro methyl indole derivative
CN107286073A (en) A kind of preparation method of 7- bromoindole derivatives
CN105175355B (en) A kind of preparation method of 2- cyano-phenothiazines
CN107513033A (en) A kind of preparation method of 6 hydroxy indoxyl derivative
CN107698483A (en) A kind of preparation method of 7 fluoroindole derivatives
CN107513062A (en) A kind of preparation method of the 7-azaindole derivatives of 6 bromine 7
CN107698482A (en) A kind of preparation method of polysubstituted indole derivatives
CN107778315A (en) A kind of preparation method of 7 7-azaindole derivatives
CN107513061A (en) A kind of preparation method of disubstituted 7 7-azaindole derivatives
CN104447528B (en) The preparation method of pyridine-2,3-diethyl dicarboxylate
CN107176922A (en) A kind of synthetic method of quinoline
CN107235888A (en) The preparation method of 5- bromoindole derivatives
CN101875590B (en) Method for synthesizing acrylamide compound
CN102464604A (en) Production method of N-methyl tetrahydrocarbazolone
CN107400081A (en) A kind of preparation method of chlorine substituted indole derivative

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20170510