Inversion of Configuration of (S)-β-Hydroxy-γ-butyrolactone with Total Retention of the Enantiomeric Purity
作者:Francesco De Angelis、Enrico De Fusco、Paola Desiderio、Fabio Giannessi、Fabrizio Piccirilli、Maria Ornella Tinti
DOI:10.1002/(sici)1099-0690(199911)1999:11<2705::aid-ejoc2705>3.0.co;2-4
日期:1999.11
In this paper we report the inversion of configuration of (S)-β-hydroxy-γ-butyrolactone [(S)-1] to its (R) enantiomer (R)-1, with total retention of the enantiomeric purity, by a four-step procedure. The (R)-β-hydroxy-γ-butyrolactone [(R)-1] was thus synthetized with an overall chemical yield of 47% and > 97% ee. This transformation opens an economic route to the production of (R)-GABOB and (R)-carnitine
在本文中,我们报告了 (S)-β-羟基-γ-丁内酯 [(S)-1] 与其 (R) 对映异构体 (R)-1 的构型反转,并完全保留了对映异构体纯度,通过四步程序。(R)-β-羟基-γ-丁内酯[(R)-1]因此以47%和>97%ee的总化学产率合成。这种转变为从 D-己糖来源或从工业废物化合物 (S)-肉碱生产 (R)-GABOB 和 (R)-肉碱以及其他生物活性化合物开辟了一条经济途径。在反应过程中,还制备了中间体 β-内酯 4,目前正在研究将其作为新合成应用的手性合成子。