Synthesis and Antihypertensive Activities of 1, 4-Dihydropyridine-5-phosphonate Derivatives. I

Abstract

A series of phosphonate derivatives, designed as analogues of 1, 4-dihydropyridine-3, 5- dicarboxylates in which a phosphonate group was introduced instead of the carboxylate group at the 5-position, was synthesized, and their antihypertensive activities were examined. Among the compounds examined, 5-diallyloxyphosphinyl-1, 4-dihydropyridine-3-carboxylates were most effective in lowering the blood pressure in normotensive rats and spontaneously hypertensive rats (SHR). The phosphonate derivatives are considered to be close analogues of the carboxylate derivatives. The structure-activity relationships are discussed.