| Literature DB >> 7765685 |
B M Fraga1, P González, R Guillermo, J R Hanson, M G Hernández, J A Takahashi.
Abstract
The biotransformation of ent-16beta-17-epoxy-7 alpha-hydroxykaurane by Gibberella fujikuroi affords ent-7 alpha,11 alpha,16 beta,17-tetrahydroxykaurane and ent-7 alpha, 9 alpha, 16 beta, 17-tetrahydroxykaurane. These results indicated that the presence of the 16 alpha, 17-diol group, into which the 16 alpha, 17-epoxy is transformed in the medium, inhibits oxidation at C-19 and favours hydroxylation at C-11(beta). Incubation of ent-16 beta, 17-epoxykauran-19-oic acid, via the 16 alpha, 17-diol, gave the 7-aldehyde of 16 alpha, 17-dihydroxy-GA12.Entities:
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Year: 1994 PMID： 7765685 DOI： 10.1016/s0031-9422(00)90345-5
Source DB: PubMed Journal: Phytochemistry ISSN： 0031-9422 Impact factor: 4.072