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Published on: January 14, 2011
Cytotoxic phorbol esters of Croton tiglium
Xiao-Long Zhang1, Lun Wang, Fu Li
1Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation, Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, People's Republic of China.
Abstract:
Chemical investigation of the seeds of Croton tiglium afforded eight new phorbol diesters (three phorbol diesters, 1-3, and five 4-deoxy-4α-phorbol diesters, 4-8), together with 11 known phorbol diesters (nine phorbol diesters, 9-17, and two 4-deoxy-4α-phorbol diesters, 18 and 19). The structures of compounds 1-8 were determined by spectroscopic data information and chemical degradation experiments. The cytotoxic activities of the phorbol diesters were evaluated against the SNU387 hepatic tumor cell line, and compound 3 exhibited the most potent activity (IC50 1.2 μM).
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