黄独鲜块根化学成分研究

通过石油醚、乙酸乙酯、正丁醇萃取,利用硅胶柱色谱、凝胶Sephadex LH-20、ODS柱色谱等方法,对鲜黄独块茎Dioscorea bulbifera的95%乙醇提取物化学成分进行分离纯化,并运用波谱学技术手段对分离得到的单体化合物进行结构鉴定。从鲜黄独药材分离鉴定了18个化合物,依次为6-羟基-2,10,10-三甲氧基-9-蒽酮(1)、薯蓣皂苷元(2)、豆甾醇(3)、3,7-二甲氧基-5,3,4-三羟基黄酮(4)、2,7-二羟基-3,4-二甲氧基菲(5)、3,7-二羟基-2,4-二甲氧基菲(6)、2,7-二羟基-4-甲氧基菲(7)、2,7-二羟基-3,4-二甲氧基-9,10-二氢菲(8)、壬二酸(9)、8-表黄独素E(10)、1,7-双-(4-羟基苯基)-4E,6E-庚二烯-3-酮(11)、黄独素B(12)、二十五烷酸-α-单甘油酯(13)、2,7-二羟基-4-甲氧基-9,10-二氢菲(14)、1,7-双-(4-羟基苯基)-1E,4E,6E-庚三烯-3-酮(15)、6-乙氧基-1H-嘧啶-2,4-二酮(16)、3,5,4'-三羟基联苄(17)、黄独素F(18)。其中化合物1为新化合物,化合物7,9,13,16为首次从该属植物中分离得到。

Chemical constituents from fresh tubers of Dioscorea bulbifera

Eighteen compounds were isolated from the 95% ethanol extract of fresh tubers of Dioscorea bulbifera by column chromatography over silica gel,Sephadex LH-20, and ODS. Their structures were elucidated by spectroscopic data analysis as 6-hydroxy-2,10,10-trimethoxy-anthracen-9-one(1), diosgenin (2), stigmasterol(3), 3, 7-dimethoxy-5, 3'', 4''-trihydroxyflavone(4), 2, 7-dihydroxy-3, 4-dimethoxyphenanthrene(5), 3, 7-dihydroxy-2, 4-dimethoxy phenanthrene(6), 2, 7-dihydroxy-4-methoxyphenanthrene (7), 2, 7-dihydroxy-3, 4-dimethoxy-9, 10-dihydroxy phenanthrene(8), azelaic acid (9), 8-epidiosbulbin E acetate (10), 1, 7-bis-(4-hydroxyphenyl)-4E, 6E-heptadien-3-one(11), diosbulbin B(12), pentacosanoic acid 2'', 3''-dihydroxypropyl ester(13), 2, 7-dihydroxy-4-methoxy-9, 10-dihydroxy-phenanthrene (14), 1, 7-bis-(4-hydroxyphenyl)-1E, 4E, 6E-heptatrien-3-one (15), 6-ethoxy-1H-pyrimidine-2, 4-dione (16), 3, 5, 4''-trihydroxy-bibenzyl (17), and diosbulbin F (18). Compound 1 is a new compound, and compounds 7, 9, 13, and 16 were isolated from this plant for the first time.