Chemical constituents from roots of Kadsura heteroclita
The dichloromethane fraction of Kadsura heteroclita roots was separated and purified by chromatographic techniques(e.g.,silica gel,Sephadex LH-20,ODS,MCI column chromatography)and semi-preparative HPLC.Twenty compounds were isola-ted from K.heteroclita,and their structures were identified by NMR,MS,UV,and X-ray single crystal diffraction techniques.Twenty compounds were isolated from K.heteroclita,which were identified as xuetongdilactone G(1),mallomacrostin C(2),3,4-seco(24Z)-cychmrt-4(28),24-diene-3,26-dioic acid 3-methyl ester(3),nigranoic acid(4),methyl ester schizanlactone E(5),schisandronic acid(6),heteroclic acid(7),wogonin(8),(2R,3R)-4′-O-methyldihydroquercetin(9),15,16-bisnor-13-oxo-8(17),11E-labdadien-19-oic acid(10),stigmast-4-ene-6β-ol-3-one(11),psoralen(12),(1R,2R,4R)-trihydroxy-p-menthane(13),homovanillyl alcohol(14),2-(4-hydroxyphenyl)-ethanol(15),coniferaldehyde(16),(E)-7-(4-hydroxy-3-methoxyphenyl)-7-methylbut-8-en-9-one(17),acetovanillone(18),vanillic acid(19)and vanillin(20).Compound 1 is a new compound named xuetongdilactone G.Compounds 2-3 and 8-20 are isolated from K.heteroclita for the first time.
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