Somjintana Taveepanich, N. Muangsin, S. Saithong
Jun 15, 2010
Citations
1
Influential Citations
8
Citations
Journal
Natural Product Research
Abstract
Biotransformation of ent-kaur-16-en-19-oic acid was carried out with Absidia blakesleeana and Rhizopus oligosporus. Absidia blakesleeana produced two novel metabolites, ent-(7α, 9α)-dihydroxy-kaur-16-en-19-oic acid and ent-(1β, 7α)-dihydroxy-kaur-16-en-19-oic acid, together with three known compounds: ent-7α-hydroxy-kaur-16-en-19-oic acid, ent-(7α, 11β)-dihydroxy-kaur-16-en-19-oic acid and ent-(7α, 13)-dihydroxy-kaur-16-en-19-oic acid. The ent-7α-hydroxy-kaur-16-en-19-oic acid and ent-(7α, 9α)-dihydroxy-kaur-16-en-19-oic acid were obtained from R. oligosporus. The structures were established by spectroscopic techniques and X-ray crystallography.