作者:Robert Chênevert、Yannick Stéphane Rose
DOI:10.1016/s0957-4166(98)00299-7
日期:1998.8
The stereoselective acetylation of meso-2,3-bis(3,4-dimethoxybenzyl)butanediol by vinyl acetate in the presence of Candida antarctica lipase in benzene gave the corresponding (+)-(2S,3R) monoester (ee greater than or equal to 98%). Transesterification of meso-2,3-bis(3,4-dimethoxybenzyl)butyl diacetate, in the presence of the same enzyme, by ethanol in benzene/isopropyl ether gave the corresponding (-)-(2R,3S) monoester (ee greater than or equal to 98%). Both enantiomers of the known cis-2,3-bis(3,4-dimethoxybenzyl)butyrolactone were synthesized from these monoesters. (C) 1998 Elsevier Science Ltd. AII rights reserved.