Abstract
3-Oxo-oleanolic acid (1 ) was biotransformed in growing cultures of the fungus Absidia glauca , resulting in three novel hydroxylated metabolites, identified as 1β -hydroxy-3-oxo-olean-11-en-28,13-lactone (2 ), 1β ,11α -dihydroxy-3-oxo-olean-12-en-28-oic acid (3 ), and 1β ,11α ,21β -trihydroxy-3-oxo-olean-12-en-28-oic acid (4 ).
Key words
Absidia glauca Hagem - hydroxylation - triterpenoids -
β ‐cyclodextrin - anticancer
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Prof. Dr. Wei-Shuo Fang
Institute of Materia Medica Chinese Academy of Medical Sciences & Peking Union Medical College
1 Xiannongtan Street
100050 Beijing
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Email: wfang@imm.ac.cn