坚龙胆中的一个新裂环烯醚萜甙(英文)

A New Secoiridoidal Glucoside from Gentiana rigescens (Gentianaceae)

从坚龙胆(Gentianarigescens)的根中分离得到1个新的裂环烯醚萜甙,命名为坚龙胆甙A(1),以及8个已知化合物龙胆苦甙(2),6′-O-β-D-吡喃葡萄糖基-龙胆苦甙(3),马钱子酸(4),6′-O-β-D-吡喃葡萄糖基-马钱子酸(5),獐牙菜甙(6),2′-(邻,间-二羟基苯甲酰基)-獐牙菜甙(7),獐牙菜苦甙(8),四乙酰开联番木鳖甙(9)。它们的化学结构通过现代波谱解析得以鉴定。化合物3,5和9为首次从坚龙胆中分离得到。

A new acylated secoiridoidal glucoside, named gentiorigenoside A （1）, was isolated from the root of Centiarm rigescens （Gentianaceae）, together with eight known compounds, gentiopicroside （2）, 6＇-O-β-D-glucopyranosyl gentiopicroside （3）, loganic acid （4）, 6＇-O-β-D-glucopyranosyl loganic acid （5）, sweroside （6）, 2＇-（ o, m-dihydoxybenzyl ）-sweroside （7）, swertiamarin （8） and secologanoside （9）. heir structures were elucidated on the basis of detailed spectroscopic analysis. Iridoidal glucosides 3, 5 and 9 were isolated for the first time from the title plant.