[关键词]
[摘要]
目的 研究欧洲凤尾蕨Pteris cretica中蕨素类化学成分。方法 结合蕨素UV特征吸收及MSn裂解规律,采用硅胶柱色谱、Sephadex LH-20柱、C18半制备柱等多种柱色谱进行蕨素类成分目标分离纯化,并应用理化性质和波谱数据对分离的化合物进行结构鉴定。结果 从欧洲凤尾蕨乙醇提取物中分离得到19个C14蕨素类化合物,分别鉴定为(2S,3S)-蕨素T(1)、(2S,3S)-蕨素C 3-O-β-D-葡萄糖苷(2)、(2R,3S)-蕨素C 3-O-β-D-葡萄糖苷(3)、(2S)-蕨素B 14-O-β-葡萄糖苷(4)、6-(1,2-二羟乙基)-2,5,7-三甲基-1-茚-1(5)、(2R,3S)-蕨素C(6)、(2S,3S)-蕨素C(7)、(2S)-蕨素P(8)、(2R,3S)-蕨素S(9)、(2S,3S)-蕨素S(10)、(2R,3S)-蕨素Q(11)、(2S,3S)-蕨素Q(12)、(2S,3S)-蕨素C 14-O-β-D-葡萄糖苷(13)、(2R,3S)-蕨素C 14-O-β-D-葡萄糖苷(14)、(2S,3S)-蕨素S 14-O-β-D-葡萄糖苷(15)、脱氢蕨素B(16)、(2R,3S)-蕨素Q 3-O-β-D-葡萄糖苷(17)、(2S,3S)-蕨素Q 3-O-β-D-葡萄糖苷(18)、(2S,3S)-蕨素T 14-O-β-D-葡萄糖苷(19)。结论 化合物2~5、10、11、14~19为首次从欧洲凤尾蕨中分离得到。
[Key word]
[Abstract]
Objective To study the chemical constituents of pterosins from Pteris cretica. Methods According to the characteristics of UV absorption and MSn fragmentation of pterosins, the pterosins were isolated and purified by silica gel, Sephadex LH-20 column and C18 semi-preparative column chromatography, and their structures were identified by physicochemical properties and spectral data. Results A total of 19 pterosins with C14 were isolated and their structures were identified as (2S,3S)-pterosin T (1), (2S,3S)-pterosin C 3-O-β-D-glucoside (2), (2R,3S)-pterosin C 3-O-β-D-glucoside (3), (2S)-pterosin B 14-O-β-glucoside (4), 6-(1,2-dihydroxyethyl)-2,5,7-trimethyl-1-indene-1-one (5), (2R,3S)-pterosin C (6), (2S,3S)-pterosin C (7), (2S)-pterosin P (8), (2R,3S)-pterosin S (9), (2S,3S)-pterosin S (10), (2R,3S)-pterosin Q (11), (2S,3S)-pterosin Q (12), (2S,3S)-pterosin C 14-O-β-D-glucoside (13), (2R,3S)-pterosin C 14-O-β-D-glucoside (14), (2S,3S)-pterosin S 14-O-β-D-glucoside (15), dehydropterosin B (16), (2R,3S)-pterosin Q 3-O-β-D-glucoside (17), (2S,3S)-pterosin Q 3-O-β-D-glucoside (18), and (2S,3S)-pterosin T 14-O-β-D-glucoside (19). Conclusion Compounds 2-5, 10, 11, 14-19 are isolated from Pteris cretica for the first time.
[中图分类号]
R284.1
[基金项目]
国家自然科学基金资助项目(81760721);国家自然科学基金资助项目(81760703);江西省自然科学基金资助项目(20181BAB205077);江西省卫生厅课题(2016A062)