Biotransformation of 6β-Eudesmanolides Functionalized at C-3 with Curvularia lunata and Rhizopus nigricans Cultures
作者:Yolanda Amate、Andrés García-Granados、Antonio Martínez、Antonio Sáenz de Bumaga、José L. Bretón、M.Esther Onorato、José M. Arias
DOI:10.1016/s0040-4020(01)86531-5
日期:1991.7
A series of biotransformations of 6β-santonin and its derivatives with functions at C-3, were carried out with Curvularia lunata and Rhizopus nigricans cultures. Rhizepus nigricans was more active in the biotransformation process against these substrates. The biotransformation of 6β-santonin yielded its 2α-hydroxy-1,2-dihydro derivative. The biotransformation of ketones at C-3 obtained by partial or
用弯孢弯曲菌和黑根霉培养物进行了一系列的一系列6β-桑坦宁及其衍生物的生物转化,这些衍生物在C-3上具有功能。黑犀牛在针对这些底物的生物转化过程中更具活性。6β-降钙素的生物转化产生其2α-羟基-1,2-二氢衍生物。通过环A中双键的部分或全部氢化获得的C-3处酮的生物转化产生3S醇。3S-羟基-4S-13S-6α-eudesmanolide与黑根霉菌的孵育以递减的顺序在C-4处产生差向异构化,在C-8,C-1或C-4处产生羟基化作用。这种差向异构化可能是在C-3处的羟基基团的参与下产生的。C-8处的微生物功能化可以提供8,12-杜鹃花内酯的合成。