Process for the preparation of amidino phenyl pyrrolidine .beta.-alanine
申请人:G. D. Searle & Co.
公开号:US05484946A1
公开(公告)日:1996-01-16
The invention herein is directed to a process for producing a lactam of the formula ##STR1## from a methionine analog of the formula ##STR2## by treating the methionine analog with trimethylsulfonium halide or trimethylsulfoxonium halide in the presence of a base in a suitable aprotic solvent. The invention herein is further directed to the preparation of amidinophenyl pyrrolidinyl .beta.-alanine urea analogs using such methionine and lactam compounds as intermediates, which .beta.-alanine urea analogs are useful as antithrombotics.