3R)--hydroxyesters in high optical purity. The corresponding (2R,3R)- isomer was obtained, with other strains, only in mixture with the isomer. These esters are useful precursors for chiral 2-methyl-3-hydroxy-butyrolactone synthons.
几种真菌菌株对4-O-
苄基-
2-甲基-
3-氧代丁酸酯的还原主要产生高光学纯度的(2S,3R)-羟基
酯。仅在与异构体混合的情况下,与其他菌株一起获得了相应的(2R,3R)-异构体。这些
酯是用于手性
2-甲基-3-羟基
-丁内酯合成子的有用的前体。