Biotransformation of 7α-hydroxy- and 7-oxo-ent-atis-16-ene derivatives by the fungus Gibberella fujikuroi
作者:Braulio M. Fraga、Pedro Gonzalez、Victoria Gonzalez-Vallejo、Ricardo Guillermo、Luz N. Diaz
DOI:10.1016/j.phytochem.2010.04.024
日期:2010.8
The microbiological transformation of 7 alpha,19-dihydroxy-ent-atis-16-ene by the fungus Gibberella fujikuroi gave 19-hydroxy-7-oxo-ent-atis-16-ene, 13(R),19-dihydroxy-7-oxo-ent-atis-16-ene, 7 alpha,11 beta,19-trihydroxy-ent-atis-16-ene and 7 alpha,16 beta,19-trihydroxy-ent-atis-16-ene, while the incubation of 19-hydroxy-7-oxo-ent-atis-16-ene afforded 13(R),19-dihydroxy-7-oxo-ent-atis-16-ene and 16 beta,17-dihydroxy-7-oxo-ent-atisan-19-al. The biotransformation of 7-oxo-ent-atis-16-en-19-oic acid gave 6 beta-hydroxy-7-oxo-ent-atis-16-en-19-oic acid, 6 beta,16 beta,17-trihydroxy-7-oxo-19-nor-ent-atis-4(18)-ene and 3 beta,7 alpha-dihydroxy-6-oxo-ent-atis-16-en-19-oic acid. (C) 2010 Elsevier Ltd. All rights reserved.