title: Biotransformation of 7alpha-hydroxy- and 7-oxo-ent-atis-16-ene derivatives by the fungus Gibberella fujikuroi.
abstract: The microbiological transformation of 7alpha,19-dihydroxy-ent-atis-16-ene by the fungus Gibberella fujikuroi gave 19-hydroxy-7-oxo-ent-atis-16-ene, 13(R),19-dihydroxy-7-oxo-ent-atis-16-ene, 7alpha,11beta,19-trihydroxy-ent-atis-16-ene and 7alpha,16beta,19-trihydroxy-ent-atis-16-ene, while the incubation of 19-hydroxy-7-oxo-ent-atis-16-ene afforded 13(R),19-dihydroxy-7-oxo-ent-atis-16-ene and 16beta,17-dihydroxy-7-oxo-ent-atisan-19-al. The biotransformation of 7-oxo-ent-atis-16-en-19-oic acid gave 6beta-hydroxy-7-oxo-ent-atis-16-en-19-oic acid, 6beta,16beta,17-trihydroxy-7-oxo-19-nor-ent-atis-4(18)-ene and 3beta,7alpha-dihydroxy-6-oxo-ent-atis-16-en-19-oic acid.
authors.affiliation: Instituto de Productos Naturales y Agrobiología, C.S.I.C., Avda. Astrofísico F. Sánchez 3, 38206-La Laguna, Tenerife, Canary Islands, Spain. bmfraga@ipna.csic.es
authors.forename: Braulio M
authors.initials: BM
authors.lastname: Fraga
authors.forename: Pedro
authors.initials: P
authors.lastname: Gonzalez
authors.forename: Victoria
authors.initials: V
authors.lastname: Gonzalez-Vallejo
authors.forename: Ricardo
authors.initials: R
authors.lastname: Guillermo
authors.forename: Luz N
authors.initials: LN
authors.lastname: Diaz
mesh_terms: D001711:Biotransformation; D045786:Diterpenes, Kaurane / Q000737:chemistry / Q000378:metabolism*; D005874:Gibberella / Q000378:metabolism*; D015394:Molecular Structure; D013237:Stereoisomerism
chemical_list: D045786:Diterpenes, Kaurane