Biotransformation of <i>ent</i>-kaur-16-en-19-oic acid by <i>Absidia blakesleeana</i> and <i>Rhizopus oligosporus</i>
作者:Somjintana Taveepanich、Nongnuj Muangsin、Saowanit Saithong、Chawang Pakawatchai、Narongsak Chaichit、Sophon Roengsumran、Amorn Petsom
DOI:10.1080/14786410902941139
日期:2010.7.10
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-(7, 9)-dihydroxy-kaur-16-en-19-oic acid and ent-(1, 7)-dihydroxy-kaur-16-en-19-oic acid, together with three known compounds: ent-7-hydroxy-kaur-16-en-19-oic acid, ent-(7, 11)-dihydroxy-kaur-16-en-19-oic acid and ent-(7, 13)-dihydroxy-kaur-16-en-19-oic acid. The ent-7-hydroxy-kaur-16-en-19-oic acid and ent-(7, 9)-dihydroxy-kaur-16-en-19-oic acid were obtained from R. oligosporus. The structures were established by spectroscopic techniques and X-ray crystallography.