Glycosides constituents of whole plant of Swertia binchuanensis / 中国药学杂志

OBJECTIVE: To study the chemical constituents of Swertia binchuanensis. METHODS: The constituents were isolated and purified by column chromatography of silica gel. Their structures were identified on the basis of spectral analysis and chemical properties. RESULTS: Five compounds are isolated and identified as 7-O-[α-L-rhamnopyranosyl-(1→2)-β-D-xylopyranosyl]-1, 8-dihydroxy-3-methoxyxanthone(1), 3-O-β-D-glucopyranosyl-1,8-dihydroxyl-5-methoxyxanthone(2), 7-O-β-D-glucopyranosyl-1,8-di-hydroxyl-3-methoxyxanthone(3), amarogentin(4), and amaroswerin(5). CONCLUSION: All of the compounds were isolated from S. binchuanensis for the first time.