申请人:Bayer Aktiengesellschaft
公开号:US03992545A1
公开(公告)日:1976-11-16
2-Amino-4,5-dihydropyridines-3,5-dicarboxylates substituted by lower alkoxy or lower alkylthio in the 6-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-4-(3-nitrophenyl)-6-ethoxy-4,5-dihydropyridine-3,5-dicarboxylic acid diethyl ester is a representative embodiment, are prepared through condensation of an aldehyde and a 3-aminoacrylate bearing an alkoxy or alkylthio group in the 3-position.
在6位被低烷氧基或低烷基硫代基取代的2-氨基-4,5-二氢吡啶-3,5-二羧酸酯中,4位可选择性地被低烷基,苯基,取代苯基或杂环基所取代,这些化合物是降压剂和冠状血管扩张剂。这些化合物通过醛和3-氨基丙烯酸酯在3位带有烷氧基或烷基硫代基的缩合反应制备而成,其中2-氨基-4-(3-硝基苯基)-6-乙氧基-4,5-二氢吡啶-3,5-二羧酸二乙酯是代表性的实施例。