紫萁营养叶中化学成分的研究

Chemical Constituents of Sterile Fronds of Osmunda japonica

目的对紫萁科植物紫萁(Osmunda japonica Thunb.)干燥营养叶的化学成分进行研究。方法以体积分数95%乙醇对紫萁干燥营养叶进行提取,对乙酸乙酯部位采用各种柱色谱进行分离,通过NMR和MS等波谱学数据分析进行结构鉴定。结果分离鉴定了8个化合物的结构:(+)-去氢催吐萝芙木醇(1)、对羟基苄叉丙酮(2)、3',4'-二羟基苄叉丙酮(3)、原儿茶醛(4)、原儿茶酸(5)、对羟基苯甲醛(6)、15-二十九酮(7)、β-谷甾醇(8)。结论化合物1、2、4、6、7为首次从紫萁属植物中分离得到。

OBJECTIVE To study the chemical constituents of the sterile fronds of Osmunda japonica. METHODS The 95% ethanol extract of the sterile fronds of Osmundajaponica was partitioned with. Eight compounds were isolated by column chromatography from ethyl acetate part,and their structures were identified by analysis of NMR and MS data. RESULTS The compounds were identified as ： （ ＋ ） -dehydrovomifoliol （ 1 ） ,p-hydroxybenzylideneacetone （2） , 3＇ ,4＇-dihydroxybenzylideneacetone （ 3 ） , protocatechuicaldehyde （4） , protocatechuic acid （5） ,p-hydroxy-benzaldehyde （ 6）, 15-nonacosanone （7）, and β-sitosterol （ 8 ）. CONCLUSION Compounds 1,2,4,6 ,and 7 were obtained from the genus Osmunda for the first time.