藏药云南兔耳草的化学成分研究(Ⅰ)

Study on the chemical constituents of Lagotis yunnanesis (I)

摘要: 从产于德钦的云南兔耳草(Lagotis yunnanensis W.W.Smith)的乙醇提取物中分离得到8个已知化合物,经波谱分析确定其结构分别为:3,5-二羟基-4’,7-二甲氧基黄酮(3,5-dihydroxy-4’,7-dimethoxyflavone),4’,5,7-三羟基-3’-甲氧基黄酮(4’,5,7-trihydroxy-3’-methoxyflavone),对甲氧基苯甲酸(p-methoxybenzoicacid),β-谷甾醇(β-sitosterol),肉桂酸(cinnamicacid),3,4-二甲氧基肉桂酸(3,4-dimethoxycinnamicacid),香草醛(vanillin),胡萝卜苷(daucosterol).以上化合物均为首次从该植物中分离得到.

Abstract: From the ethanol extract of Lagotis yunnanesis W.W.Smith collected in Deqin,eight known compounds were isolated and identified as 3,5-dihydroxy-4’,7-dimethoxyflavone,4’,5,7-trihydroxy-3’-methoxyflavone,p-methoxybenzoic acid, β -sitosterol,cinnamic acid,3,4-dimethoxy cinnamic acid,vanillin and daucosterol,respectively.The compounds were isolated from this plant for the first time.