Regioselective mono-addition of lithium enolate of esters to N-carbamoyl-L-pyroglutamates () gave excellent yields of ()-5-oxoamino acid derivatives () which were found to be an effective synthon for syntheses of carbapenams and carbapenems.
[EN] PROCESS FOR PREPARING ALPHA-CARBOXAMIDE PYROLIDINE DERIVATIVES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS D'ALPHA-CARBOXAMIDE DE PYRROLIDINE
申请人:BIOGEN INC
公开号:WO2019071162A2
公开(公告)日:2019-04-11
The invention relates to a novel process for preparing a-carboxamide pyrrolidine derivatives, in particular (2S, 5R)-5-(4-((2-fluorobenzyl)oxy)phenyl)pyrrolidine-2-carboxamide, and to novel intermediates for use in said process along with processes for preparing said intermediates.