作者:Gerhard Bringmann、Daniela Herzberg、Geo Adam、Friedhelm Balkenhohl、Joachim Paust
DOI:10.1515/znb-1999-0514
日期:1999.5.1
(R )-α-Lipoic acid is synthesized in seven steps from the base chemicals methyl acetoacetate or Meldrum’s acid and monomethyl adipate. The key steps are the introduction of the stereogenic center by fermentative or homogeneously catalyzed hydrogenation of 3-oxooctanedioic acid diester to (3S)-3-hydroxyoctanedioic acid diester and its regioselective reduction to (6S)-6 ,8-dihydroxyoctanoic acid ester
(R )-α-硫辛酸是由基本化学品乙酰乙酸甲酯或 Meldrum 酸和己二酸单甲酯分七个步骤合成的。关键步骤是通过发酵或均相催化氢化 3-氧代辛二酸二酯为 (3S)-3-羟基辛二酸二酯及其区域选择性还原为 (6S)-6,8-二羟基辛酸酯,引入立体中心。从 3-氧代辛二酸二酯开始,(R)-α-硫辛酸的总产率为 40%。