Microbial oxidation of tricyclic sesquiterpenoids containing a dimethylcyclopropane ring
作者:Wolf-Rainer Abraham、Klaus Kieslich、Burkhard Stumpf、Ludger Ernst
DOI:10.1016/s0031-9422(00)97521-6
日期:1992.1
Abstract Calarene was oxidized by Bacillus megaterium and Diplodiagossypina to give allylic calarenols and calarendiols in which either of the geminal methyl groups of the cyclopropane ring was hydroxylated. Globulol was hydroxylated faster and in higher yields than calarene by both strains. In the case of this compound, vicinal diols were formed and, again, either of the geminal methyl groups was
Hydroxylation of Aromadendrane Derivatives by Mucor plumbeus†
作者:Ricardo Guillermo、James R. Hanson、Almaz Truneh
DOI:10.1039/a605991k
日期:——
Both 7α-hydroxy- and
7α,15-dihydroxy-aromadendrane are efficiently hydroxylated
by Mucor plumbeus at C-14 with retention of the adjacent
cyclopropane ring.
The hydroxylation of globulol and 7-epiglobulol by Cephalosporium aphidicola
作者:James R. Hanson、Peter B. Hitchcock、Revathy Manickavasagar
DOI:10.1016/s0031-9422(00)89521-7
日期:1994.11
Globulol and 7-epiglobulol were shown to be hydroxylated by Cephalosporium aphidicola on one (C-14) of the methyl groups geminal to the cyclopropane ring in 48.5 and 56% yield, respectively. The significance of this hydroxylation adjacent to a cyclopropane ring is noted.
Biotransformation of sesquiterpenoids, (−)-globulol and (+)-ledol by Glomerella cingulata
作者:Mitsuo Miyazawa、Tomoaki Uemura、Hiromu Kameoka
DOI:10.1016/s0031-9422(00)89522-9
日期:1994.11
Abstract The biotransformation of (−)-globulol and (+)-ledol by Glomerellacingulata was investigated. (−)-Globulol gave only one product which was hydroxylated at C-13. By contrast, (+)-ledol gave a number of products. The major metabolite contained a carboxylic group C-11 which was formed by Me-13. The structure of the new compound has been elucidated on the basis of its spectral data coupled with