[关键词]
[摘要]
目的 研究藏药亚吉玛(长梗金腰Chrysosplenium axillare)醋酸乙酯部位的化学成分。方法 采用HP-20大孔吸附树脂、Sephadex LH-20凝胶等柱色谱以及制备高效液相技术进行化学成分分离,采用NMR和HR-ESI-MS等光谱方法进行化合物结构鉴定。结果 分离得到17个高度氧化的黄酮醇衍生物及4个三萜类化合物,其结构分别鉴定为5,6,4'-三羟基- 3,7,3'-三甲氧基黄酮-6-O-β-D-葡萄糖苷(1)、5,6,3'-三羟基-3,7,4'-三甲氧基黄酮-6-O-β-D-葡萄糖苷(2)、chrysosplenoside H(3)、5-O-demethylapulein(4)、5,3'-二羟基-3,6,7,4'-四甲氧基黄酮(5)、5,2'-二羟基-3,7,4',5'-四甲氧基黄酮(6)、chrysosplenol C(7)、5,2',5'-三羟基-3,7,4'-三甲氧基黄酮(8)、axillarin(9)、brickellin(10)、槲皮素(11)、芦丁(12)、isorientin(13)、chrysosplenoside E(14)、槲皮素3-O-β-D-葡萄糖苷(15)、5,6,3',4'-四羟基-3,7-二甲氧基黄酮-6-O-β-D-葡萄糖苷(16)、tomentin(17)、β-peltoboykinolic acid(18)、3α,16α-二羟基-4,4,9,14-四甲基-(9β,10α)-19-去甲孕酮-5-烯-11,20-二酮(19)、3α,16α,20,25-四羟基-(10α)-葫芦素-5-烯-11,22-二酮(20)、6α,23α-环氧-3β,20β-二羟基-10αH,23βH-葫芦素-5,24-二烯-11-酮(21)。结论 化合物2、4~6、8、9、19~21为首次从金腰属植物中分离得到,其余化合物均为首次从长梗金腰中分离得到。
[Key word]
[Abstract]
Objective To isolate and identify the chemical constituents from the ethyl acetate fraction of the Tibetan medicine Chrysosplenium axillare. Methods HP-20 macroporous adsorption resin, Sephadex LH-20 gel column chromatography and preparative high performance liquid chromatography were used to separate the chemical constituents. The structures of all isolates were elucidated by spectroscopic methods, including NMR and HR-ESI-MS. Results Seventeen highly oxidized flavonol derivatives and four triterpenoids were isolated and their structures were identified as 5,6,4'-trihydroxy-3,7,3'- trimethoxyflavone-6-O-β-D-glucoside (1), 5,6,3'-trihydroxy-3,7,4'-trimethoxyflavone-6-O-β-D-glucoside (2), chrysospenoside H (3), 5-O-demethyllapulein (4), 5,3'dihydroxy-3,6,7,4'-tetramethoxyflavone (5), 5,2'-dihydroxy-3,7,4',5'-tetramethoxyflavone (6), chrysosplenol C (7), 5,2',5'-trihydroxy-3,7,4'-trimethoxyflavone (8), axillarin (9), brickellin (10), quercetin (11), rutin (12), isorientin (13), chrysosplenoside E (14), quercetin-3-O-β-D-glucoside (15), 5,6,3',4'-tetrahydroxy-3,7-dimethoxyflavone-6-O-β-D-glucoside (16), tomentin (17), β-peltoboykinolic acid (18), 3α,16α-dihydroxy-4,4,9,14-tetramethyl-(9β,10α)-19-norpregn-5-ene-11,20-dione (19), 3α,16α,20,25-tetrahydroxy-(10α)-cucurbit-5-ene-11,22-dione (20),16α,23α-epoxy-3β,20β-dihydroxy-10αH,23βH-cucurbit- 5,24-dien-11-one (21). Conclusion It is the first report for the compounds 2, 4-6, 8, 9, 19-21 identified in the genus Chrysosplenium. The other compounds were isolated from C. axillare for the first time.
[中图分类号]
R284.1
[基金项目]
国家自然科学基金面上项目(81873086);江西省自然科学基金面上项目(20181BAB205076);国家重点研发计划资助(2019YFC1712300);江西中医药大学校级研究生创新专项资金资助项目(JZYC20S40)