晶帽石斛化学成分的研究

Studies on chemical constituents of Dendrobium crystallinum

目的:对兰科石斛属植物晶帽石斛Dendrobium crystallinum的化学成分进行研究。方法:应用硅胶、Sephadex LH-20柱色谱等方法进行分离纯化,根据理化性质和波谱数据鉴定化合物结构。结果:从晶帽石斛醋酸乙酯部分共分离并鉴定了9个化合物,分别为:4,4′-二羟基-3,5-二甲氧基联苄(1),3,5′-二羟基-3′,4-二甲氧基联苄(2),柚皮素(3),对羟基苯甲酸(4),对羟基反式肉桂酸二十四烷基酯(5),对羟基反式肉桂酸二十八烷基酯(6),反式阿魏酸二十六烷基酯(7),豆甾醇(8)和胡萝卜苷(9)。结论:所有化合物均为首次从该植物中分离得到,其中化合物1,4为首次从石斛属植物中分离得到。

Objective： To study the chemical constituents of Dendobium crystallinum. Method： Compounds were isolated and purified by silica gel and Sephadex LH - 20 column chromatography. Tbeir structures were identified by pbysicocbemical properties and spectral analyses. Result： Nine compounds were obtained and identified as： 4, 4′-dihydroxy-3, 5-dimethoxybi-benzyl （1） , gigantol （2）, naringenin （3）, p-hydroxybenzoic acid （4）, n-tetracosyl trans-p-cou-marate （5）, n-octacosy trans-p-coumarate （6）, n-hexaco- syl trans-ferulate （7）, stigmasterol （8）, daucosterol （9）. Conclusion： All these compounds were obtained from this plant for the first time, compounds 1 and 4 were isolated firstly from the genus.