元江锥叶化学成分及其α-葡萄糖苷酶抑制活性研究  

Chemical constituents from the leaves of Castanopsis orthacantha and theirα-glucosidase inhibitory activities

作　　者：程雪雪 王亚凤[2] 何瑞杰[2] 阳丙媛 刘章彬 黄永林[2] CHENG Xue-xue;WANG Ya-feng;HE Rui-jie;YANG Bing-yuan;LIU Zhang-bin;HUANG Yong-lin(College of Life Sciences,Guangxi Normal University,Guilin 541006,China;Guangxi Key Laboratory of Functional Phytochemicals Utilization,Guangxi Continuous Use of Resources,Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences,Guilin 541006,China)

机构地区：[1]广西师范大学生命科学学院,广西桂林541006 [2]广西壮族自治区中国科学院广西植物研究所,广西植物功能物质与资源持续利用重点实验室,广西桂林541006

出　　处：《中成药》2024年第9期2987-2993,共7页Chinese Traditional Patent Medicine

基　　金：国家自然科学基金(32060108,82060764);桂林市创新平台与人才计划(20210102-3);广西科学院基本科研业务费项目(CQZ-C-1901)。

摘　　要：目的研究元江锥叶化学成分及其α-葡萄糖苷酶抑制活性。方法元江锥叶甲醇提取物采用MCI gel CHP 20P、Sephadex LH-20、Diaion HP20SS等多种柱色谱进行分离纯化,根据理化性质及波谱数据鉴定所得化合物的结构。采用PNPG法测定α-葡萄糖苷酶抑制活性。结果从中分离得到18个化合物,分别鉴定为原儿茶酸(1)、没食子酸(2)、3-O-α-L-阿拉伯吡喃糖基-4-羟基苯甲酸(3)、3-O-没食子酰基莽草酸(4)、methyl 4-epi-shikimate-3-O-gallate(5)、5-O-没食子酰基莽草酸(6)、5-O-咖啡酰基莽草酸(7)、6-O-没食子酰基-葡萄糖苷(8)、1,6-二-O-没食子酰基-β-D-吡喃葡萄糖苷(9)、1,3-二-O-没食子酰基-α-D-葡萄糖苷(10)、2,3-二-O-没食子酰基-D-葡萄糖苷(11)、β-O-methylgluco-2,3-digalloyl esters(12)、(3 R,1′S)-[1′-(6″-O-galloyl-β-D-gluco-pyranosyl)oxyethyl]-3-hydroxy-dihydrofuran-2(3H)-one(13)、4-O-D-(6′-O-galloyl)glucopyranyl-(E)-p-coumaryl acid(14)、chestanin(15)、1-desgalloyl eugeniin(16)、picrorhiza acid(17)、11-诃子裂酸甲酯(18)。化合物2和16的IC_(50)值分别为(0.12±0.059)、(0.00089±0.00025)mmol/L。结论所有化合物均为首次从元江锥叶中分离得到。化合物2和16具有较强的α-葡萄糖苷酶抑制活性。AIM To study the chemical constituents form the leaves of Castanopsis orthacantha Fance and theirα-glucosidase inhibitory activities.METHODS The methanol extract form the leaves of C.orthacanth was isolated and purified by various column chromatography methods,such as MCI gel CHP 20P,Sephadex LH-20,Diaion HP20SS,then the structures of obtained compounds were identified by physicochemical properties and spectral data.Theα-glucosidase inhibitory activities were determined by PNPG method.RESULTS Eighteen compounds were isolated and identified as protocatechuic acid(1),gallic acid(2),3-O-α-L-arabininopyranosyl-4-hydroxybenzoic acid(3),3-O-galloyl shikimic acid(4),methyl 4-epi-shikimate-3-O-gallate(5),5-O-galloyl shikimic acid(6),5-O-caffeoylshikimic acid(7),6-O-galloyl-glucoside(8),1,6-di-O-galloyl-β-D-pyranogluloside(9),1,3-di-O-galloyl-α-D-glucoside(10),2,3-di-O-galloyl-D-glucoside(11),β-O-methylgluco-2,3-digalloyl esters(12),(3 R,1′S)-[1′-(6″-O-galloyl-β-D-gluco-pyranosyl)oxyethyl]-3-hydroxy-dihydrofuran-2(3H)-one(13),4-O-D-(6′-O-galloyl)glucopyranyl-(E)-p-coumaryl acid(14),chestanin(15),1-desgalloyl eugeniin(16),picrorhiza acid(17),11-methyl chebulate(18).The IC_(50)values of compounds 2 and 16 were(0.12±0.059),(0.00089±0.00025)mmol/L,respectively.CONCLUSION All compounds are isolated from the leaves of C.orthacantha for the first time.Compounds 2 and 16 have strongα-glucosidase inhibitory activities.

关 键 词：元江锥 叶 化学成分 分离鉴定 Α-葡萄糖苷酶 

分 类 号：R284.1[医药卫生—中药学]