Acetic acid derivatives, process for the preparation thereof and composition containing the same
申请人:Dainippon Pharmaceutical Co., Ltd.
公开号:EP0037254A1
公开(公告)日:1981-10-07
Novel acetic acid derivatives of the formula:
wherein X is oxygen or sulfur; R, is hydrogen or a lower alkyl; R2 is hydroxy, an alkoxy, an alkenyloxy, a cycloalkyloxy, an aryloxy, a substituted aryloxy, an aryl-lower alkoxy, a substituted aryl-lower alkoxy, an aryl-lowrer alkenyloxy, a substituted aryl-lower alkenyloxy, an ω-di-substituted amino-lower alkoxy, a lower alkoxycarbonyl-lower alkoxy, a lower alkoxy-lower alkoxy, a hydroxy-lower alkoxy-lower alkoxy, an acyl-lower alkoxy, or a group
wherein R3 is hydrogen, hydroxy, a lower alkyl, an aryl-lower alkyl, a hydroxy-lower alkyl, or a carboxy-lower alkyl, R4 is hydrogen, a lower alkyl or a hydroxy-lower alkyl, or the R3 and R4 may combine together with the nitrogen atom to which they are joined to form a heterocyclic group; and the group -CH(R1)COR2 is joined to the carbon atom at 2- or 3-position, and pharmaceutically acceptable salts thereof have excellent anti-inflammatory, analgesic and antipyretic activities with weak ulcerogenicity in the gastrointestinal tract and toxicity. They can be prepared by cyclization reaction and made up into pharmaceutical compositions.
式中的新型乙酸衍生物:
其中 X 是氧或硫;R 是氢或低级烷基;R2是羟基、烷氧基、烯氧基、环烷氧基、芳氧基、取代的芳氧基、芳基-低级烷氧基、取代的芳基-低级烷氧基、芳基-低级烯氧基、取代的芳基-低级烯氧基、ω-二取代氨基-低级烷氧基、低级烷氧羰基-低级烷氧基、低级烷氧基-低级烷氧基、羟基-低级烷氧基-低级烷氧基、酰基-低级烷氧基或基团
其中 R3 是氢、羟基、低级烷基、芳基-低级烷基、羟基-低级烷基或羧基-低级烷基,R4 是氢、低级烷基或羟基-低级烷基,或 R3 和 R4 可与相连的氮原子结合形成杂环基团;以及在 2 位或 3 位与碳原子相连的基团-CH(R1)COR2,及其药学上可接受的盐类具有极佳的消炎、镇痛和解热活性,但在胃肠道中的致溃疡性和毒性较弱。它们可通过环化反应制备成药物组合物。