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Chemical constituents from the aerial parts of Musella lasiocarpa |
Liao-Bin DONGa,b, Juan HEa, Xing-Yao LIa,b, Xing-De WUa,b, Xu DENGa,b, Gang XUa, Li-Yan PENGa, Yu ZHAOa, Yan LIa, Xun GONGa, Qin-Shi ZHAOa |
a State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; b Graduate University of Chinese Academy of Sciences, Beijing 100039, China |
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Abstract Phytochemical investigation of the aerial parts of the monotypic plant, Musella lasiocarpa, led to the isolation of four rare bicyclic diarylheptanoids, musellarins B-E(2-5), two new phenylphenalenones, 2-methoxy-9-(3', 4'-dihydroxyphenyl)-1H-phenalen-1-one(9), 2-methoxy-9-(3'-methoxy-4'-hydroxyphenyl)-1H-phenalen-1-one(10), a new acenaphtylene derivative, trans-(1S, 2S)-3-(4'-methoxyphenyl)-acenaphthene-1, 2-diol(13), and two new sucrose esters, 1, 2', 3', 4', 6'-O-pentaacetyl-3-O-trans-p-coumaroylsucrose(16), 1, 2', 3', 4', 6'-O-pentaacetyl-3-O-cis-p-coumaroylsucrose(17), together with nine known compounds. In addition,(4E, 6E)-1-(3', 4'-dihydroxyphenyl)-7-(4"-hydroxyphenyl)-hepta-4, 6-dien-3-one(15) was isolated for the first time from a natural source. The structures of new compounds were elucidated by analysis of their spectroscopic data. Compounds 2, 6, 8-10, 12, and 14 were cytotoxic toward several of the human tumor cell lines(HL-60, SMMC-7721, A-549, MCF-7, and SW480). Of these, the new compound 9 was the most potent one, with IC50 values of 5.8, 10.3, 6.3, 3.3, and 2.3 μM, respectively.
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Keywords
monotypic
diarylheptanoid
phenylphenalenone
acenaphtylene
sucrose ester
Musella lasiocarpa
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Fund:This work was financially supported by the National Basic Research Program of China(973 Program No. 2009CB522303 and No. 2011CB915503), the NSFC(No. U0932602), the National Natural Science Foundation of China(No. 90813004), and the State Key Laboratory of Phytochemistry and Plant Resources in West China(No. P2010-ZZ05). |
Issue Date: 10 November 2017
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