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Studies on antineoplastic constituents from chinese marine mollusc sea hare(Ⅰ)

LIN Hou wen, ZHANG Chun, YI Yang hua, et al (Department of Pharmacy, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai 200003)  
Two active compounds were isolated from chinese marine mollusc sea hare (Notarchus leachii cirrosus) by bioassay guided method with conidia of Pyricularia oryzae , and by a combination of extraction and purification with suitable solvent as well as multiple column chromatographies. Their structures were elucidated as (7 E) 1 acetoxy 8 chloro 7 (dichloromethyl) 3 methyoct 7 en 4 one (Ⅰ), (7 Z) 1 acetoxy 8 chloro 7 (dichloromethy l) 3 methyoct 7 en 4 one (Ⅱ). All compounds were obtained for the first time from this specimen and showed significant antineoplastic activities in vitro .
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