Triterpene saponins from Adinandra nitida

To investigate the chemical constituents of the leaves of Adinandra nitida, several column chromatography methods were used to isolate the chemical constituents of this plant. The structures were elucidated on the basis of spectral data. Six compounds were isolated and identified as 2α,3α,19α-trihydroxy-olean-12-en-28-oic acid-28-O-β-D-glucopyranoside (1), arjunetin (2), sericoside (3), glucosyl tormentate (4), nigaichigoside F1 (5) and arjunglucoside I (6), separately. Compound 1 is a new compound, and compounds 2-6 were isolated from A.nitida for the first time.