1,4-Dihydropyridines bearing carboxy functions in the 3-, 5- and 6- or 2-, 3-, 5- and 6-positions and being substituted in the 4-position by phenyl, substituted phenyl, naphthyl, phenylalkyl or a heterocyclic group are antihypertensive agents and coronary vessel dilators. The compounds, of which 2-methyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5,6-tricarboxylic acid triethylester is a representative embodiment, are prepared through condensation of an enamine with an ylidene acid ester, the latter being separately prepared or prepared in situ.
在3-、5-和6-或2-、3-、5-和6-位置带有羧基的1,4-
二氢吡啶,并在4-位置被
苯基、取代
苯基、
萘基、
苯基烷基或杂环基所取代,是降压药和
冠状血管扩张剂。这些化合物,其中
2-甲基-4-(3-
硝基苯基)-1,4-
二氢吡啶-3,5,6-
三羧酸三乙酯是一个代表性实施例,是通过
烯胺与酸酐缩合反应制备而成,后者可以单独制备或原位制备。