Asymmetric synthesis of methyl (2 R ,3 S )-3-(4-methoxyphenyl) glycidate, a key intermediate of diltiazem, via Mukaiyama aldol reaction
作者:Ritsuo Imashiro、Tooru Kuroda
DOI:10.1016/s0040-4039(00)02235-8
日期:2001.2
Methyl (2R,3S)-3-(4-methoxyphenyl) glycidate, a key intermediate of diltiazem, was synthesized in good yield with high enantioselectivity based on chiral oxazaborolidine-mediated Mukaiyama aldol reaction of p-anisaldehyde with a,cl-dichloro silyl ketene acetal (up to 96% ee), followed by reduction and cyclization. (C) 2001 Elsevier Science Ltd. All rights reserved.