[Chemical constituents in whole herb of Bidens pilosa var. radiata].

OBJECTIVE: To study the chemical constituents of Bidens pilosa var. radiata. METHODS: The constituents were separated and purified with silica gel column, and identified by physicochemical properties and spectral methods. RESULTS: Ten compounds were separated and identified as friedelin (1), n-tridecane (2), friedelinol (3), beta-sitosterol (4), 21 a-hydroxyfriedelan-3-one (5), stigmasterol (6), lupeol (7), stigmasterol-3-O-beta-D-glucopyranoside (8), eleosanole acid (9), friedelin-3beta-ol-27-oic acid (10). CONCLUSION: Ten compounds are isolated from this plant for the first time.