Dihydropyridine-5-phosphonic acid cyclic ester.

摘要

An optical isomer of a compound having the formula: <CHEM> wherein the two methyl groups at 4- and 6-positions of the dioxaphosphorinane ring assume trans configurations to each other, which has a levo-rotatory angle of optical rotation attributable to the asymmetric carbon atom at 4-position of the dihydropyridine ring, and a pharmaceutically acceptable salt thereof.