中文摘要：

目的：对沙煲暗罗根的化学成分进行研究。方法：运用硅胶和Sephadex LH-20柱色谱，以及制备薄层色谱等方法分离纯化化合物，通过渡谱数据和理化性质鉴定结构。结果：从沙煲暗罗根中得到10个化合物：5，7-二羟基-8-甲酰基-6-甲基黄烷酮（1），demethoxymatteucinol（2），5，7-二羟基-6-甲基-8-甲酰基黄酮（3），5，7-二羟基-6-甲酰基-8-甲基黄酮（4），MarcanineA（5），suberosol（6），β-谷甾醇（7），香草醛（8），肉桂酸（9），烟酸（10）。结论：化合物1-4为首次从该属中分离得到，所有化合物为首次从该植物中分离得到。化合物6对人肿瘤细胞SPC-A-1和SGC-7901显示有细胞毒性。

英文摘要：

AIM： To study the chemical constituents from the roots of Polyalthia obliqua. METHODS： The constituents were isolated and purified by silica gel column chromatography, Sephadex LH-20 and preparative TLC. Their structures were identified on the basis of spectral data and physiochemical properties. RESULTS： Ten compounds were isolated and their structures were elucidated as 5,7-dihydroxy-8-formyl-6-methylflavanone （1）, demethoxymatteucin ol （2）, 5,7-dihydroxy-6-methyl-8-formylflavone （3）, 5, 7-dihy- droxy-6-formyl-8-methylflavone （4）, marcanine A （5）, suberosol （6）, β-sitosteral （7）, vanillin （8）, cinnamic acid （9） and nicotinic acid （10）. CONCLUSION： Compounds 1-4 were reported from the genus for the first time. All the compounds were isolated from this plant for the first time. Compound 6 showed cytotoxicity against human cancer cell lines SPC-A-1 and SGC-7901.