Biotransformation of ent-6α-acetoxy- and ent-6-ketomanoyl oxides with rhizopus nigricans and curvularia lunata cultures
作者:Andrés García-Granados、Juan J. Gutiérrez、Antonio Martínez、Francisco Rivas、JoséM. Arias
DOI:10.1016/s0031-9422(96)00845-x
日期:1997.5
Microbial transformation of ent -16,18-dihydroxy-6-oxo-13- epi -manoyl oxide by Rhizopusnigricans produced ent -11 β -hydroxy, ent -20-hydroxy and ent -3 β -hydroxy derivatives. Biotransformation of ent -16,18-dihydroxy-6-oxomanoyl oxide gave ent -11 β -hydroxy and ent -3 β -hydroxy derivatives. However, biotransformations of these substrates with Curvularia lunata produced only ent -11 β -hydroxy derivatives
摘要 黑根霉对 ent -16,18-dihydroxy-6-oxo-13-epi-manoyloxide 的微生物转化产生了 ent -11 β -羟基、ent -20-羟基和 ent -3 β -羟基衍生物。ent -16,18-dihydroxy-6-oxomanoyloxide 的生物转化得到ent -11 β -羟基和ent -3 β -羟基衍生物。然而,这些底物与新月弯孢菌的生物转化仅产生了 -11 β -羟基衍生物。ent -18-hydroxy-6-oxo-13-epi-manoyloxide 与 R. nigricans 孵育产生 14,15-epoxy 衍生物,在 C-3 处有或没有羟基化,而其差向异构体在 C-13 处的微生物转化产生了 ent -11 β-羟基化衍生物。