Synthesis and biological evaluation of a trichothecene epi-epoxide, 3α,4β,15-triacetoxy-12,13-epi-epoxytrichothec-9-ene
作者:Ernest W. Colvin、Stuart Cameron
DOI:10.1039/c39860001642
日期:——
In order to provide additional insight into the mode of action of the trichothecene mycotoxins, one of the first semi-synthetic trichotheceneepi-epoxides (8) has been prepared; in dramatic contrast to its natural isomer (9), this compound proved to be devoid of significant biological activity.
Tenuipesine A (1), a novel trichothecane with an unprecedented carbon-migrated skeleton that embodies of a cyclopropane ring, was isolated from cultivated fruiting bodies of Paecilomyces tenuipes (Isaria japonica), a popular e ntomo pathogenic fungi employed in folk medicine and health foods in China, Korea, and Japan. The structure was determined on the basis of two-dimensional NMR data. Its stereochemistry was elucidated by spectroscopic data and the chemical transformation of the coexisting trichothecene, 4beta-acetoxy-12,13-epoxytrichothec-g-ene3cc,15-diol (2).