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《Acta Pharmaceutica Sinica》 2003-04
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Two new phenylethanoid glycosides from Corallodiscus flabellata

ZHENG Xiao ke, LI Jun, FENG Wei sheng *, BI Yue feng, JI Chun ru (Henan College of Traditional Chinese Medicine, Zhengzhou 450008, China)  
Aim To study the chemical constituents from Corallodiscus flabellata . Methods Fresh plant of Corallodiscus flabellata was extracted twice with boiling water, filtered to remove insoluble materials, concentrated under reduced pressure at temperature 55 ℃ to a small volume. The concentrated liquor was subjected to solvent solvent partitioning using ether, ethyl acetate, and n butanol (saturated with water). The fraction of ethyl acetate extract was chromatographed over macroporous adsorption resin (Diaion HP 20) eluted with a mixture of H 2O and MeOH in increasing MeOH content. Their fractions from resin were repeatedly chromatographed over Sephadex LH 20, Toyopearl HW 40, gel MCI, Gel CHP 20 and silica gel column. Structures of compounds obtained were identified on the basis of their spectral data, hydrolysis and chemical correlation. Results Two phenylethanoid glycosides (I, II) and three phenolic acids were obtained from the EtOAc fraction of water extracts. Their structures were identified as 3,4 dihydroxyphenylethanol 8 O [β D apiofuranosyl (1→2)] β D glucopyranoside (I), 3,4 dihydroxyphenylethanol 8 O [(5 O Vanilloyl) β D apiofuranosyl(1→2)] β D glucopyranoside (II), vanillic acid (III), syringic acid (IV) and ferulic acid (V). Conclusion I and II are new compounds. Compounds III, IV and V were isolated from this plant for the first time.
【Fund】: 河南省高校杰出科研人才创新工程资助项目(2 0 0 3KYCX0 0 2 );; 河南省杰出青年科学基金资助项目 (0 2 12 0 0 12 0 0 )
【CateGory Index】: R284
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