Drimane Sesquiterpenoids from the Aspergillus oryzae QXPC‐4 |
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Authors: | Ren Ren Chao‐Jun Chen Sha‐Sha Hu Hui‐Ming Ge Wen‐Yong Zhu Ren‐Xiang Tan Rui‐Hua Jiao |
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Institution: | Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, P.?R. China, (phone/fax: +86‐25‐83593201) |
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Abstract: | Three new drimane sesquiterpenoids, astellolides C–E ( 1 – 3 , resp.), four new drimane sesquiterpenoid p‐hydroxybenzoates, astellolides F–I ( 4 – 7 , resp.), together with two known compounds astellolides A and B ( 8 and 9 , resp.), have been isolated from the liquid culture of Aspergillus oryzae (strain No. QXPC‐4). Their structures were established by comprehensive analysis of spectroscopic data. The relative and absolute configurations were determined on the basis of NOESY and CD data, together with single‐crystal X‐ray diffraction analyses of compounds 1 – 3 . The metabolites were evaluated for their cytotoxic activities, however, no compounds showed a significant cytotoxicity against the tested cell lines at a concentration of 20 μM . |
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Keywords: | Drimane sesquiterpenoids Sesquiterpenoids Aspergillus oryzae Astellolides C – I |
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