[致謝] 貴州省、中國科學院天然產物化學重點實驗室的張建新副研究員和王道平副研究員在化合物波譜數據測定方麵提供了幫助。
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Antitussive constituents of Disporum cantoniense
GAN Xiu-hai1, ZHAO Chao2, LIANG Zhi-yuan1, GONG Xiao-jian2, CHEN Hua-guo2, ZHOU Xin2*
(1. The School of Chemistry and Life Science, Guizhou Normal College, Guiyang , China;
2. The Research Center for Quality Control of Natural Medicine, Guizhou Normal University, Guiyang , China)
[Abstract] The antitussive activity assay for the root extraction of Disporum cantoniense was carried out with coughing mice induced by ammonia liquor. The results showed that the ethanol and water extractions of D. cantoniense possess strong antitussive activity, and the high dose of the former was better than positive control, and then the constituents of the ethanol extraction were separated and purified by various modern chromatographic techniques. Their structures were identified by physico-chemical properties and spectroscopic data. As a result, eight compounds were isolated and identified as stigmast-4-en-3-one(1),(22E, 24R)-ergosta-5, 7, 22-trien-3β-ol(2), obtucarbamate A(3), obtucarbamate B(4), neotigogenin(5), azo-2, 2′-bis[Z-(2,3-dihydroxy-4-methyl-5-methoxy)phenyl ethylene](6), dimethyl{[carbonylbis(azanediyl)]bis(2-methyl-5,1-phenylene)}dicarbamate(7), and quercetin-3-O-β-D-glucopyranoside(8). All compounds were isolated from this plant for the first time, and the result of bioactivity-directed isolation showed that compounds 3, 4, and 6 had obvious effect on antitussive activity, and compound 6 had the same level as positive control.
[Key words] Disporum cantoniense; antitussive activity; azo-type compounds; chemical constituents
doi:10.4268/cjcmm