毛白杨化学成分研究

目的:对毛白杨雄株干皮进行化学成分的分离鉴定。方法:毛白杨的新鲜干皮用甲醇提取,所得浸膏用水混悬后依次用石油醚、醋酸乙酯、正丁醇萃取,对醋酸乙酯和正丁醇部分采用各种柱色谱进行分离纯化,根据理化性质并通过波谱数据的解析进行结构鉴定。结果:从醋酸乙酯和正丁醇部分获得12个化合物,分别鉴定为苯甲酸(1),胡萝卜苷(2),苯甲酰水杨苷(3),鼠李柠檬素(4),樱花素(5),7-O-甲基香橙素(6),异大齿杨苷A(7),siebolside B(8),樱花苷(9),micranthoside(10),α-D-葡萄糖(11),蔗糖(12)。结论:化合物4～12为首次从该植物中分离得到,其中化合物10为首次从该属植物中得到。

Chemical constituents contained in Populus tomentosa

Objective: To separate and identify chemical constituents from stem barks of male plants of Populus tomentosa.Method: Fresh stem barks of P.tomentosa were extracted with methanol to obtain extracts which were suspended in water and blended successively with petroleum ether,ethyl acetate and n-butanol.Various chromatographic techniques were used to separate and purify the constituents extracted with ethyl acetate and n-butanol fractions.Their structures were identified on the basis of their physicochemical properties and spectral data.Result: Twelve compounds were separated with ethyl acetate and n-butanol fractions and identified as benzoic acid(1),daucosterol(2),tremuloidin(3),rhamnocitrin(4),sakuranetin(5),7-O-methylaromadendrin(6),isograndidentatin A(7),siebolside B(8),sakuranin(9),micranthoside(10),α-D-glucopyranose(11),and sucrose(12).Conclusion: Compounds 4-12 were separated from this plant for the first time.Of them,compound 10 was separated from this plant genus for the first time.