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  • Title: Dibenzocyclooctadiene lignans and lanostane derivatives from the roots of Kadsura coccinea and their protective effects on primary rat hepatocyte injury induced by t-butyl hydroperoxide.
    Author: Ban NK, Thanh BV, Kiem PV, Minh CV, Cuong NX, Nhiem NX, Huong HT, Anh HT, Park EJ, Sohn DH, Kim YH.
    Journal: Planta Med; 2009 Sep; 75(11):1253-7. PubMed ID: 19350485.
    Abstract:
    A new dibenzocyclooctadiene lignan, acetylepigomisin R ( 1), and a new 3,4-seco-lanostane-type triterpene, seco-coccinic acid F ( 2), along with three known dibenzocyclooctadiene lignans, isovaleroylbinankadsurin A ( 3), kadsuralignan J ( 4), and binankadsurin A ( 5), and one lanostane-type triterpene, 20( R),24( E)-3-oxo-9 beta-lanosta-7,24-dien-26-oic acid ( 6), were isolated from the methanol extract of the Kadsura coccinea roots. Their structures were elucidated on the basis of spectroscopic evidence including ESI-MS, HR-EI-MS, 1D and 2D NMR. The protective effects of these compounds were evaluated in primary cultured rat hepatocytes intoxicated with 1.2 mM T-butyl hydroperoxide. Compounds 1, 3, and 5 showed protective effects with ED (50) values of 135.7, 26.1, and 79.3 microM, respectively.
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