目的:研究海州常山叶的化学成分。方法:应用硅胶、ODS、Sephadex LH-20柱层析,半制备液相等色谱技术,结合重结晶方法对海州常山叶的石油醚萃取物进行化学成分研究,并应用1H-NMR、^13C-NMR、2D-NMR、MS等波谱技术鉴定化合物结构。结果:从石油醚萃取物中分离鉴定了10个化合物,分别为:羽扇豆醇(1)、木栓酮(2)、白桦脂酸(3)、蒲公英赛醇(4)、22-脱氢赪桐甾醇(5)、赪桐甾醇(6)、豆甾醇(7)、β-谷甾醇(8)、植物醇(9)、1H-吲哚-3-羧酸(10)。结论:其中,化合物10为首次从大青属植物中分离得到,化合物1、3-4、7-10为首次从该植物中分离得到。
Objective: To investigate the chemical constituents of the leaves of Clerodendrum trichotomum. Methods: The chemical constituents of petroleum ether extract of the leaves of Clerodendrum trichotomum were isolated and purified by various chromatographic techniques,such as silica gel,ODS,Sephadex LH-20,semi-preparative HPLC and recrystallization. The structures of these isolated compounds were identified by spectroscopic analysis(1H-NMR,^13C-NMR,2D-NMR and MS). Results: Ten compounds were isolated and identified from petroleum ether extract,containing four triterpenes,lupeol( 1),friedelin( 2),betulinic acid( 3) and taraxerol( 4); four sterols,22-dehydroclerosterol( 5),clerosterol( 6),stigmasterol( 7) and sitosterol( 8); one diterpenoid,trans-phytol( 9),and one alkaloid,1H-indole-3-carboxylic acid( 10). Conclusion: Compound 10 is obtained from the genus Clerodendrum for the first time,and seven compounds( 1,3 - 4,and 7 - 10) are firstly isolated from this plant.