Enantiopure Synthesis of All Four Stereoisomers of Carbapenam-3-carboxylic Acid Methyl Ester
作者:Alberto Avenoza、José I. Barriobero、Jesús H. Busto、Jesús M. Peregrina
DOI:10.1021/jo026804+
日期:2003.4.1
on N-Boc-7-azabicyclo[2.2.1]heptan-2-one-1-carboxylic acid methyl ester to obtain enantiopure trans- and cis-5-(carboxymethyl)pyrrolidine-2-carboxylic acid methyl esters. These disubstituted pyrrolidines have been used as starting materials to develop concise and straightforward syntheses of all fourstereoisomers of carbapenam-3-carboxylic acid methyl esters. In this way, we have confirmed unequivocally