Lipase-catalyzed alcoholysis of diol dibenzoates: selective enzymatic access to the 2-benzoyl ester of 1,2-propanediol and preparation of the enantiomerically pure (R)-1-O-benzoyl-2-methylpropane-1,3-diol
作者:Enzo Santaniello、Silvana Casati、Pierangela Ciuffreda、Luca Gamberoni
DOI:10.1016/j.tetasy.2005.03.019
日期:2005.5
Enzymatic debenzoylation of 1,2-propanediol dibenzoate with 1-octanol has been studied in organic solvent using lipases from different sources. In general a slow, highly regioselective alcoholysis in diisopropyl ether affords exclusively a monoester benzoylated at the secondary hydroxy group although the reaction proceeds with low enantioselectivity. In the presence of Pseudomonas cepacia lipase absorbed
已经在有机溶剂中使用不同来源的脂肪酶研究了1-2-丙二醇与1,2-丙二醇二苯甲酸酯的酶脱苯甲酰化反应。通常,尽管该反应以低对映选择性进行,但是在二异丙醚中缓慢,高度区域选择性的醇解仅提供在仲羟基上被苯甲酰化的单酯。在存在洋葱假单胞菌的脂肪酶吸附到硅藻土上,更快的反应允许(的2-苯甲酰基酯的制备- [R)-1,2-丙二醇(82%ee)和对映体纯(- [R)-1- ø -苯甲酰基-2-甲基丙烷-1,3-二醇(> 98%ee)。