Search

Your search keyword '"Boaventura MA"' showing total 2 results
Start Over Author "Boaventura MA" Journal phytochemistry
2 results on '"Boaventura MA"'

1. The biotransformation of ent-kaur-16-en-19-oic acid by Rhizopus stolonifer.

Author

Silva EA, Takahashi JA, Boaventura MA, and Oliveira AB

Subjects
Biotransformation, Diterpenes chemistry, Diterpenes pharmacokinetics, Molecular Structure, Spectrum Analysis, Rhizopus metabolism
Abstract

Microbial transformation of ent-kaur-16-en-19-oic acid was carried out with R. stolonifer. After seven days of incubation, two metabolites, ent-7 alpha-hydroxy-kaur-16-en-19-oic acid and ent-12 beta-hydroxy-kaur-9(11),16-dien-19-oic acid, were isolated as a result of hydroxylation and hydroxylation/dehydrogenation, respectively. Incubation for 15 days also afforded ent-16 beta,17-dihydroxy-kauran-19-oic acid. The metabolites were identified by spectroscopic methods.

Published
1999
Full Text
View/download PDF

2. The bio-transformation of ent-19-hydroxykaur-16-en-15-one by Cephalosporium aphidicola.

Author

Boaventura MA, Hanson JR, Hitchcock PB, and Takahashi JA

Subjects
Biotransformation, Crystallography, X-Ray, Diterpenes chemistry, Magnetic Resonance Spectroscopy, Oxidation-Reduction, Stereoisomerism, Acremonium metabolism, Diterpenes metabolism
Abstract

ent-19-Hydroxykaur-16-en-15-one is transformed to ent-3 beta,16 beta,19-trihydroxykauran-15-one by Cephalosporium aphidicola. The structure of this metabolite was established by X-ray crystallography.

Published
1994
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results