Dimericbiscognienynes B and C: New diisoprenyl-cyclohexene-type meroterpenoid dimers from Biscogniauxia sp. |
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| Authors: | Huan Zhao Meizhi Wang Guodong Chen Dan Hu Enqing Li Yibo Qu Libing Zhou Liangdong Guo Xinsheng Yao Hao Gao |
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| Affiliation: | 1. Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy / Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China;2. College of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, China;3. Guangdong-Hongkong-Macau Institute of CNS Regeneration, Joint International Research Laboratory of CNS Regeneration, Jinan University, Guangzhou 510632, China;4. State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | Dimericbiscognienynes B and C (1 and 2), two new diisoprenyl-cyclohexene-type meroterpenoid dimers, were isolated from Biscogniauxia sp. 71-10-1-1. Their structures, including the absolute configurations, were determined by spectroscopic analyses and ECD experiments. Meroterpenoids are special natural products that originate from mixed terpenoid-nonterpenoid pathway. As a member of meroterpenoid family, diisoprenyl-cyclohexene/ane-type meroterpenoids composed of two isoprenyl chains (C5 unit) and a cyclohexene/ane moiety (C6 unit), featuring diverse skeleton structures with wide range of bioactivities. In these reported diisoprenyl-cyclohexene/ane-type meroterpenoids, only three dimers were identified. The discovery of the two new dimers added members of this rare class of meroterpenoids. |
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| Keywords: | Meroterpenoid Dimer Diisoprenyl-cyclohexene/ane-type meroterpenoid Diels-Alder reaction Corresponding authors. |
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