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 four stereoisomers of carbapenam-3-carboxylic acid methyl esters. In this way, we have confirmed unequivocally
Retro-Dieckmann反应已被用作N-Boc-7-氮杂双环[2.2.1]庚烷-2-一-1-羧酸甲酯上的立体发散合成工具,以获得对映体反式和顺式5-(羧甲基) )吡咯烷-2-羧酸甲酯。这些二取代的吡咯烷已被用作起始原料,以开发出简明而直接的碳青霉烯-3-羧酸甲酯的所有四个立体异构体的合成。这样,我们明确地证实了从沙雷氏菌和欧文氏菌属菌株中分离出的两种碳青霉烯的立体化学。