[Non-alkaloid constituents of Gelsemium elegans].

To study the non-alkaloid chemical constituents of Gelsemium elegans.Compounds were isolated and purified by repeated column chromatography, and their structures were elucidated by spectroscopic methods.Ten compounds were isolated and their structures were identified as tamarixin (1), tamarixetin 3-O-beta-D-galactopyranoside (2), scopolin (3), scopoletin (4), uradine (5), caffeic acid (6), caffeic acid ethyl ester (7), ferulic acid ethyl ester (8), ethyl-alpha-D-fructofuranoside (9), and ethyl-beta-D-fructopyranoside (10).Compounds 1-3,5-10 are firstly isolated from this plant and compounds 1, 2, and 5-10 are isolated from the genus Gelsemium for the first time.