目的:对青天葵中的化学成分进行研究。方法:采用色谱技术进行分离,运用理化性质和波谱学技术确定化合物的结构。结果:从青天葵中分离并鉴定了5个化合物,分别为鼠李柠檬素(1)、鼠李秦素(2)、鼠李柠檬素-3-O-β-D-葡萄糖苷(3)、鼠李柠檬素-4′-O-β-D-葡萄糖苷(4)和对羟基苯甲酸(5)。结论:化合物3、4和5均为首次从该植物中分离得到。 Objective: To study the chemical constituents in blue sky sunflower. Methods: The chromatographic technique was used for separation. The physicochemical properties and spectroscopic techniques were used to determine the structure of the compounds. RESULTS: Five compounds were isolated and identified from B. tenacissima, which were Rhamnophylline (1), Rhamnozein (2), Rhamnolipin-3-O-β-D-glucoside (3), and Rat. Licitin-4’-O-β-D-glucoside (4) and p-hydroxybenzoic acid (5). Conclusion: Compounds 3, 4 and 5 were isolated from this plant for the first time.