A new route to enantiomerically pure 2,5-disubstituted pyrrolidines. Total synthesis of (+)-Pyrrolidine 197B.
作者:Robert Bloch、Cécile Brillet-Femandez、Gérard Mandville
DOI:10.1016/0957-4166(94)80037-5
日期:1994.4
An enantioselective synthesis of (+)-pyrrolidine 197B, starting from the readily available lactol 1 is described. The key steps involve two chelation controlled additions of Grignard reagents to the carbonyl groups of lactols 1 and 5 and a highly stereoselective trans-pyrrolidine formation from the dimesylate 9.