Practical biocatalytic desymmetrization of meso-N-heterocyclic dicarboxamides and their application in the construction of aza-sugar containing nucleoside analogs
作者:Peng Chen、Ming Gao、De-Xian Wang、Liang Zhao、Mei-Xiang Wang
DOI:10.1039/c2cc18012j
日期:——
Amidase-catalyzed desymmetrization of meso-N-heterocyclic dicarboxamides under very mild conditions provided a highly efficient and practicalmethod for the preparation of enantiomericallypure carbamoyl-substituted heterocyclic amino acids that were unique and versatile platforms for the construction of both antipodes of aza-sugar containing nucleoside analogs.
Enantioselective Biotransformations of Racemic and Meso Pyrrolidine-2,5-dicarboxamides and Their Application in Organic Synthesis
作者:Peng Chen、Ming Gao、De-Xian Wang、Liang Zhao、Mei-Xiang Wang
DOI:10.1021/jo300412j
日期:2012.4.20
(2R,5R)-5-carbamoylpyrrolidine-2-carboxylic acid in high yields and excellent enantioselectivity. Biocatalyticdesymmetrization of meso cis-pyrrolidinedicarboxamide afforded enantiomerically pure (2R,5S)-5-carbamoylpyrrolidine-2-carboxylic acid in an almost quantitative yield. In both kinetic resolution and desymmetrization, the amidase always exhibited excellent 2R-enantioselectivity, although its catalytic