Biocatalyzed Enantioselective Reduction of Activated C=C Bonds: Synthesis of Enantiomerically Enriched α-Halo-β-arylpropionic Acids
作者:Elisabetta Brenna、Francesco G. Gatti、Alessia Manfredi、Daniela Monti、Fabio Parmeggiani
DOI:10.1002/ejoc.201100537
日期:2011.7
The enantioselective biocatalyzed reduction of the C=C bond of some (Z)-methyl α-halo-β-arylacrylates was investigated. The reaction was performed by baker's yeast fermentation and Old Yellow Enzymes 1–3 mediated biotransformations. The final products were, respectively, enantiomerically enriched (S)-α-halo-β-arylpropionic acids and their methyl esters, and ester hydrolysis was promoted in the whole
研究了对映选择性生物催化还原一些 (Z)-α-卤代-β-芳基丙烯酸酯的 C=C 键。该反应通过面包酵母发酵和老黄酶 1-3 介导的生物转化进行。最终产物分别是富含对映异构体的 (S)-α-卤代-β-芳基丙酸及其甲酯,并且在整个细胞系统中促进了酯水解。当芳环被吸电子基团取代时,观察到高转化率和对映选择性值。进一步处理这些富含对映体的 (S)-卤酸中的两种,得到对位取代的 D-苯丙氨酸。