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New triterpenoids from the kernels of Azadirachta indica |
Hong-Wei WANGa,b, Jie-Qing LIUa, Jin-Xiong CHENa,b, Yuan-Feng YANGa,b, Yu-Xin YANa,b, Zhong-Rong LIa, Ming-Hua QIUa,b |
a State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; b University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract Three new limonoids (1-3) and a new intact triterpenoid (4), along with three known constituents (5-7), were isolated from the dried kernels (after extracting azadirachtin) of Azadirachta indica. The structures of the new compounds 1-benzoyl-3-deacetyl-1-detigloyl salannin (1), 7-tigloyl-12-oxo vilasini (2), azadiralactone (3) and azadirahemiacetal (4) were elucidated by means of spectroscopic analysis. The cytotoxities of these isolated constituents were assayed.
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Keywords
Azadirachta indica
triterpenoid
limonoids
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Fund:The project was financially supported by the Knowledge Innovation Program of the CAS (Grant No. KSCX2-YW-G-038, KSCX2-EW-R-15), Special Foundation for National Major Basic Research (No.SB2007FY400), as well as Foundation of State Key Laboratory of Phytochemistry and Plant Resources in West China (P2010-ZZ14). The authors were sincerely grateful to Mangshi Bright Neem Industry Developments Ltd. for providing research samples, and Professor Li Yan for cytotoxicity bioassay. |
Issue Date: 11 February 2018
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