申请人:Bayer Aktiengesellschaft
公开号:US03939171A1
公开(公告)日:1976-02-17
2-Amino-1,4-dihydropyridines bearing a carbonyl function in the 5-position and being optionally substituted by lower alkyl or phenyl in the 6-position, and the corresponding 2-amino-1,4,5,6,7,8-hexahydro-5-oxoquinolines, which derivatives are further substituted by a carbonyl group in the 3-position and optionally substituted in the 4-position by lower alkyl, phenyl, substituted phenyl or a heterocyclic group are antihypertensive agents and coronary vessel dilators. The compounds, of which 2-amino-6-methyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylic acid 3,5-diethyl ester is a representative embodiment, are prepared through condensation of an ylideneacetoacetic acid ester and an amidine.
5位带有羰基功能的2-氨基-1,4-二氢吡啶,6位可选择性地被低烷基或苯基取代,以及相应的2-氨基-1,4,5,6,7,8-六氢-5-氧喹啉衍生物,这些衍生物进一步在3位被羰基基团取代,在4位可选择性地被低烷基、苯基、取代苯基或杂环基团取代,它们是降压药和冠状血管扩张剂。这些化合物,其中2-氨基-6-甲基-4-(3-硝基苯基)-1,4-二氢吡啶-3,5-二羧酸3,5-二乙酯是其代表性实施例,是通过酮酸酯和胺基甲酸盐的缩合制备而成。