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作 者:刘彦飞[1] 史国茹[1] 王欣[1] 张春磊[1] 王艳[1] 陈若芸[1] 于德泉[1]
机构地区:[1]中国医学科学院北京协和医学院药物研究所天然药物活性物质与功能国家重点实验室,北京100050
出 处:《中草药》2016年第11期1830-1833,共4页Chinese Traditional and Herbal Drugs
基 金:国家自然科学基金资助项目(81403076)
摘 要:目的研究天目地黄Rehmannia chingii全草的化学成分。方法通过正相硅胶、Sephadex LH-20以及反相HPLC柱等色谱方法对天目地黄的化学成分进行分离纯化,应用谱学技术鉴定化合物的结构。结果从天目地黄水提取物中分离得到17个化合物,分别鉴定为8-甲基-9氢环戊烷并吡喃-1,3,6,8-四醇(1)、3,4-二羟基苯乙醇(2)、3-甲氧基-4-羟基苯乙醇(3)、苯乙醇-8-O-β-D-葡萄糖苷(4)、(3,4-二羟基苯乙醇)-鼠李糖-(1→3)-葡萄糖苷(5)、(苯乙醇)-木糖-(1→6)-葡萄糖苷(6)、去乙酰地黄苷(7)、毛蕊花糖苷(8)、异毛蕊花糖苷(9)、地黄苷(10)、异地黄苷(11)、焦地黄苯乙醇苷C(12)、焦地黄苯乙醇苷A1(13)、焦地黄苯乙醇苷B1(14)、3,4-dihydroxy-β-phenethyl-O-α-L-rhamnopyranosyl-(1→3)-O-β-D-galacopyranosyl-(1→6)-4-O-caffeoyl-β-D-glucopyranoside(15)、肉苁蓉苷F(16)、异肉苁蓉苷F(17)。结论共鉴定17个化合物,包括1个环烯醚萜(1),16个苯乙醇及其苷(2~17);化合物1为新化合物,命名为天目地黄素;化合物16、17为首次从该属植物中分离得到。经体外活性筛选发现化合物9、12、14~16有醛糖还原酶抑制活性。Objective To investigate the chemical constituents of Rehmannia chingii.Methods The compounds were isolated from an aqueous extract from the whole plants of R.chingii by a combination of various chromatographic techniques including column chromatography over silica gel and Sephadex LH-20 and reversed-phase HPLC.Their structures were identified by spectroscopic analysis including MS and NMR data.Results Seventeen compounds were isolated and identified as 8-methyloctahydrocyclopenta [c] pyran-1,3,6,8-tetraol(1),3,4-dihydroxy-phenethyl alcohol(2),3-methoxyl-4-hydroxyphenyl alcohol(3),phenylethyl-8-O-β-D-glucopyranoside(4),3,4-dihydroxy-β-phenethyl-O-α-L-rhamnopyranosyl-(1→3)-O-β-D-glucopyranoside(5),2-phenylethylO-β-D-xylopyranosyl-(1→6)-β-D-glucopyranoside(6),deacyl-martynoside(7),acteoside(8),isoacteoside(9),martynoside(10),isomartynoside(11),jionoside C(12),jionoside A1(13),jionoside B1(14),3,4-dihydroxy-β-phenethyl-O-α-L-rhamnopyranosyl-(1→3)-O-β-D-galacopyranosyl-(1→6)-4-O-caffeoyl-β-D-glucopyranoside(15),cistanoside F(16),and isocistanoside F(17).Conclusion Among the isolated seventeen compounds,compound 1 is a new compound named rehmachinin,and compounds 16—17 are isolated from the plants of Rehmannia Libosch.ex Fisch.et Mey.for the first time.In the preliminary assays,compounds 9,12,and 14—16 exhibit the obvious inhibition against aldose reductase.
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