Chemical Structures and Hepatoprotective Effects of Constituents from the Leaves of Salacia chinensis
作者:Seikou Nakamura、Yi Zhang、Hisashi Matsuda、Kiyofumi Ninomiya、Osamu Muraoka、Masayuki Yoshikawa
DOI:10.1248/cpb.59.1020
日期:——
The methanolic extract from the leaves of Salacia chinensis collected in Thailand was found to show a protective effect on D-galactosamine-induced cytotoxicity in primary cultured mouse hepatocytes. From the methanolic extract, eight new glycosides, named foliachinenosides E, F, G, H, and I, and foliasalaciosides J, K and L, were isolated together with 26 known constituents. The structures of new glycosides were determined on the basis of physicochemical and chemical evidence. In addition, the hepatoprotective effects of the isolated compounds on D-galactosamine-induced cytotoxicity were examined. Among them, lignans, eleutheroside E2 and 7R,8S-dihydrodehydrodiconiferyl alcohol 4-O-β-D-glucopyranoside, were found to show the protective effects [inhibition (%) 41.4±3.6 (p<0.01), 45.5±2.7 (p<0.01) at 100 μM, respectively].
研究发现,从泰国采集的盐肤木叶片中提取的甲醇提取物对<小>D小>半乳糖胺诱导的原代培养小鼠肝细胞的细胞毒性具有保护作用。从甲醇提取物中分离出了 8 种新苷,分别命名为叶脉苷 E、F、G、H 和 I,以及叶脉苷 J、K 和 L,以及 26 种已知成分。根据理化证据确定了新苷的结构。此外,还研究了分离出的化合物对<小>D小>半乳糖胺诱导的细胞毒性的保肝作用。结果表明,木脂素、榄香甙 E2 和 7R,8S-二氢脱氢二铁醇 4-O-β-D-Glucopyranoside 具有保护作用[在 100 μM 时的抑制率(%)分别为 41.4±3.6 (p<0.01)、45.5±2.7 (p<0.01)]。