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  • Title: [Chemical structure of cyperotundic acid from rhizomes of Cyperus rotundus].
    Author: Xu HB, Geng CA, Zhang XM, Ma YB, Huang XY, Chen JJ.
    Journal: Zhongguo Zhong Yao Za Zhi; 2016 Mar; 41(6):1066-1069. PubMed ID: 28875671.
    Abstract:
    Thirteen compounds were isolated from the ethyl acetate extract of the rhizomes of Cyperus rotundus(Xiangfu) by means of various chromatographic techniques(silica gel, Al2O3, Sephadex LH-20, MCI GEL CHP-20P and HPLC), and their structures were identified as cyperotundic acid(1),(4S, 5E, 10R)-7-oxo-trinoreudesm-5-en-4β-ol(2), 4-hydroxy-4, 7-dimethyl-1-tetralone(3), taraxerone(4), dammaradienyl acetate(5), zeorin(6), sarmentine(7), guineensine(8), pellitorine(9), caprolactam(10), liriodendrin(11), 3-hydroxy-1-(4-hydroxy-3,5-dimethoxyphenyl)-2-[4-(3-hydroxy-1-(E)-propenyl)-2,6-dimethoxyphenoxy]propyl-β-D-glucopyranoside(12)and 1-(3, 4-methylenedioxyphenyl)-1E-tetradecene(13) by extensive spectroscopic analyses(IR, MS, 1D-and 2D-NMR). Compound 1 was a new rearranged sesquiterpene and named as cyperotundic acid, which did not obey the isoprene rule.Compounds 2-13 were obtained from the genus Cyperus for the first time.
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