何康 范琳琳 伍天苔 申琳燕 简洁 邹娟

摘 要: 庐山石韦(Pyrrosia sheareri)为贵州少数民族常用药材,但其化学成分研究较少。为更深入研究其化学成分,该文采用大孔吸附树脂、硅胶色谱、葡聚糖凝胶LH-20色谱等分离纯化技术对其乙醇提取物进行分离纯化,采用波谱数据分析及参考文献比对等方法对分离得到的化合物进行结构鉴定。结果表明:从庐山石韦全草中分离得到11个化合物,分别鉴定为环阿尔廷-25-烯-3β,24-二醇(1)、3β-羟基齐墩果-12-烯-27-羧酸(2)、乌索酸(3)、7β-羟基谷甾醇(4)、7α-羥基谷甾醇(5)、β-谷甾醇(6)、3,7-二羟基-5-辛内酯(7)、5,7,3′,5′-三羟基二氢黄酮(8)、香草酸(9)、咖啡酸甲酯(10)、8-羟基辛酸(11)。其中,化合物1和2均为首次从石韦属植物中分离得到,化合物1、2、4、5、7、8、10、11均为首次从庐山石韦中分离得到。
关键词: 庐山石韦, 民族药, 化学成分, 分离纯化, 结构鉴定
中图分类号: Q946
文献标识码: A
文章编号: 1000-3142(2021)11-1862-06
Chemical constituents from Pyrrosia sheareri
HE Kang1, FAN Linlin2, WU Tiantai1, Shen Linyan1, JIAN Jie1, ZOU Juan1*
( 1. Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China; 2. Guizhou
Health Vocational College, Tongren 554309, Guizhou, China )
Abstract: Pyrrosia sheareri is widely used as folk herbs in minority areas of Guizhou Province. However, its chemical constituents are rarely reported. To further study the chemical constituents of P. sheareri, macroporous adsorption resins, silica-gel and sephadex LH-20 columns were employed to isolate and purify chemical constituents of P. sheareri. The structures of obtained compounds were identified by comprehensive spectroscopic analyses and confirmed by comparison of their spectral data with those in the literature. The results were as follows: Eleven compounds were isolated and elucidated respectively as cycloart-25-en-3β,24-diol (1), 3β-acetoxyolean-12-en-27-oic acid (2), ursolic acid (3), 7β-hydroxysitosterol (4), 7α-hydroxysitosterol (5), β-sitosterol (6), 3,7-dihydroxy-5-octanolide (7), 5,7,3′,5′-tetrahydroxy-flavanone (8), vanillic acid (9), caffeic acid methyl ester (10), 8-hydroxyoctanoic acid (11). Compounds 1, 2, 4, 5, 7, 8, 10 and 11 were isolated from this plant for the first time, and compounds 1 and 2 were isolated from this genus for the first time.
Key words: Pyrrosia sheareri, ethnic medicine, chemical constituents, isolation and purification, structure identification
水龙骨科(Polypodiaceae)石韦属(Pyrrosia)植物全世界有100多种,中国现知有37种,贵州约有13种,分布广泛且资源丰富(ECFC,1988),其中庐山石韦(Pyrrosia sheareri)是贵州石韦属植物中资源最丰富的品种之一,在全省均有分布(贵州省中药研究所,1992;邱德文和杜江,2005;潘炉台,2012)。石韦属植物大多数种具有药用价值,并在中国民族民间普遍作为利尿通淋、清热止血药使用,其疗效在《本草纲目》和《神农本草经》等本草古籍中早有记载,其中庐山石韦既被《中国药典》收载(国家药典委员会,2005),同时也为贵州少数民族常用药,苗族称其为“啊咳知”,用于治疗感染及腹泻(贵州省中药研究所,1992),在仡佬族用于抗感染(赵俊华等,2003),以及在毛南族用于治疗支气管炎(孙济平,2006)。……