[关键词]
[摘要]
目的 对黄花三宝木Trigonostemon lutescens枝叶的95%乙醇提取物中的化学成分进行研究。方法 利用硅胶柱色谱、MCI和Sephadex LH-20柱色谱及半制备型高效液相等色谱方法分离纯化,结合理化性质和MS、NMR等波谱学数据对化学结构进行解析。结果 从黄花三宝木醋酸乙酯萃取物中发现并鉴定了11个化合物,分别为7个香豆素类:酸橙素烯醇(1)、水合橘皮内酯(2)、花椒毒素(3)、佛手柑内酯(4)、异茴芹内酯(5)、别异欧芹属素乙(6)、异去甲基呋喃羽叶芸香素(7);2个苯丙素糖苷:3,4-dihydroxyallylbenzene-4-O-β-D-glucopyranoside(8)、1-O-β-D-glucopyranosyl-4-allylbenzene(9);1个苯乙醇类:1-(2-ethylphenyl)-1,2-ethanediol(10);1个生物碱类:8-hydroxy-3-methoxy-5H-pyrido[2,1-c] pyrazin-5-one(11)。结论 化合物1~11均为首次从三宝木属植物中分离得到。
[Key word]
[Abstract]
Objective To study the chemical constituents in 95% ethanol aqueous extract of Trigonostemon lutescens. Methods The open silica gel, MCI, Sephadex LH-20 column chromatography, and the semi-preparative HPLC were used to isolate and purify the chemical constituents from the EtOAc fraction of T. lutescens. The structures of the isolates were elucidated by their physiochemical properties, NMR, and MS spectroscopic data, as well as comparison with literature data. Results Eleven compounds were isolated from the EtOAc fraction of the 95% aqueous EtOH extract of T. lutescens, and their structures were identified as seven coumarins, auraptenol (1), meranzin hydrate (2), xanthotoxin (3), bergapten (4), isoimpinellin (5), alloisoimperatorin (6), and isodemethylfuropinarine (7); Two phenylalanine glycosides, 3,4-dihydroxy allylbenzene-4-O-β-D-glucopyranoside (8) and 1-O-β-D-glucopyranosyl-4-allylbenzene (9); One phenylethanol, 1-(2-ethylphenyl)-1,2-ethanediol (10); One alkaloid, 8-hydroxy-3-methoxy-5H-pyrido[2,1-c] pyrazin-5-one (11). Conclusion All these compounds are isolated from the genus Trigonostemon for the first time.
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[基金项目]
国家自然科学基金资助项目(21502165);江苏省自然科学基金资助项目(BK20130439);江苏省高校自然科学研究面上项目(13KJB360014);中国博士后基金资助项目(2014M551671);江苏省博士后基金资助项目(1401156C);江苏省研究生培养创新工程项目(SJLX16_0605)