A new efficient synthesis of ethyl β-carboline-3-carboxylate (β-CCE) and methyl 4-methyl-β-carboline-3-carboxylate (4-methyl-β-CCM) starting fr
摘要:
Ethyl beta-carboline-3-carboxylate (9) and methyl 4-methyl-beta-carboline-3-carboxylate (15) were prepared in high yields hy condensing indole-2-carboxaldehyde (5) (itself prepared by lithium aluminum hydride reduction of the Weinreb amide derived from indole-2-carboxylic acid) with ethyl 2-amino-3,3-diethoxypropionate (6) and methyl 2-amino-3,3-diethoxybutyrate (12), respectively, followed by reduction of the imine bonds formed with sodium cyanoborohydride and cyclization of the resulting amines (8 and 14, respectively) using titanium (IV) chloride.
A .beta.-carbolin-3-carboxylic acid derivative of the formula ##STR1## has valuable pharmacological properties when administered to patients, e.g. humans as a drug, have been shown to possess interesting tranquilizing activity.
Beta-carbolin-3-carboxylic acid derivatives, pharmaceutical compositions containing them and their therapeutical use
申请人:SCHERING AKTIENGESELLSCHAFT
公开号:EP0030254A1
公开(公告)日:1981-06-17
β-Carbolin-3-carboxylic acid derivatives of the formula
wherein X, R3, R4, R9 and RA have various significances.
These compounds possess valuable pharmacological properties. In particular, they act on the central nervous system and are suitable for use in psychopharmaceutical preparations.
式中β-咔啉-3-羧酸衍生物
其中 X、R3、R4、R9 和 RA 具有不同的含义。
这些化合物具有宝贵的药理特性。特别是,它们可作用于中枢神经系统,适用于精神药物制剂。
US4371536A
申请人:——
公开号:US4371536A
公开(公告)日:1983-02-01
US5010077A
申请人:——
公开号:US5010077A
公开(公告)日:1991-04-23
A new efficient synthesis of ethyl β-carboline-3-carboxylate (β-CCE) and methyl 4-methyl-β-carboline-3-carboxylate (4-methyl-β-CCM) starting fr
作者:Mouloud Dekhane、Robert H. Dodd
DOI:10.1016/s0040-4020(01)80649-9
日期:1994.1
Ethyl beta-carboline-3-carboxylate (9) and methyl 4-methyl-beta-carboline-3-carboxylate (15) were prepared in high yields hy condensing indole-2-carboxaldehyde (5) (itself prepared by lithium aluminum hydride reduction of the Weinreb amide derived from indole-2-carboxylic acid) with ethyl 2-amino-3,3-diethoxypropionate (6) and methyl 2-amino-3,3-diethoxybutyrate (12), respectively, followed by reduction of the imine bonds formed with sodium cyanoborohydride and cyclization of the resulting amines (8 and 14, respectively) using titanium (IV) chloride.