Neolignan and megastigmane glucosides from the aerial parts of Isodon japonicus with cell protective effects on BaP-induced cytotoxicity
作者:Takahiro Matsumoto、Seikou Nakamura、Souichi Nakashima、Tomoe Ohta、Keiko Ogawa、Masashi Fukaya、Junko Tsukioka、Tomohiro Hasei、Tetsushi Watanabe、Hisashi Matsuda
DOI:10.1016/j.phytochem.2017.02.007
日期:2017.5
Six neolignan glucosides, named isodonosides I-VI, and a megastigmane glucoside named isodonmegastigmane I, were isolated together with 15 known compounds from the methanolic extract of aerial parts of Isodon japonicus cultivated in Tokushima, Japan. The chemical structures of the compounds were elucidated based on their MS and NMR spectroscopic analysis. The absolute configurations of the neolignan
六种新木脂素糖苷,名为isodonosides I-VI 和一种名为isodonmegastigmane I 的巨豆苷,与15 种已知化合物一起从日本德岛栽培的Isodon japonicus 地上部分的甲醇提取物中分离出来。基于它们的MS和NMR光谱分析阐明了化合物的化学结构。新木脂素和 megastigmane 糖苷的绝对构型通过衍生化、ECD(电子圆二色性)棉花效应近似和改进的 Mosher 方法确定。此外,发现新木脂素葡萄糖苷对苯并[a]芘诱导的细胞毒性具有显着的细胞保护作用。