Carbamoylmethyl group as an activated group in protease- and base-catalyzed transesterification of 1,4-dihydropyridines: A novel asymmetric synthesis of valnidipine
作者:Yoshihiko Hirose、Kinya Kariya、Ikuharu Sasaki、Yoshiaki Kurono、Kazuo Achiwa
DOI:10.1016/s0040-4039(00)73813-5
日期:1993.9
The first protease-catalyzed enantioselective transesterification of 1,4-dihydropyridine-3,5-dicarboxylates in an aqueous solution was developed with high optical purity. Carbamoylmethyl ester group was enantioselectively transesterificated with (S)-N-benzyl-3-pyrroridinol by the protease and successive base-catalyzed transesterification proceeded smoothly to give the chiral drug, valnidipine, in a good yield.