Biomimet1c cyclization of 4β, 5α-epoxy-6β-acetoxy--germacr-1(10)-ene to form -( 1β-h ; 5β-h)-guaianes
作者:A. Garcia-Granados、A. Molina、E. Cabrera
DOI:10.1016/s0040-4020(01)87404-4
日期:1986.1
Biotransformation of shiromool derivatives by Rhizopus nigricans cultures: Chemical-microbiological synthesis of michelenolide analogues
作者:Andrés García-Granados、María C. Gutiérrez、Antonio Martínez、Francisco Rivas、JoséM. Arias
DOI:10.1016/s0040-4020(98)00074-x
日期:1998.3
The biotransformation of two derivatives of shiromool was carried out with Rhizopusnigricans cultures to obtain 11- and 12- hydroxylated metabolites. The 11-hydroxyl germacrane compound was transformed to 11-R and 11-S 12-hydroxyl derivatives which were oxidised with TPAP to give michelenolide analogues. In the biotransformation processes, 2β- 3α- and 9β-hydroxyl derivatives were also obtained, as