Non-iridoid constituents from roots of Gentiana straminea

Objective To study the non-iridoid constituents from the roots of Gentiana straminea.Methods The compounds were repeatedly separated and purified on column chromatography of silica gel,Sephadex LH-20,and ODS,and their structures were identified on the basis of spectral and chemical methods.Results Twelve compounds were isolated from 70% ethanol extract of G.straminea and were identified as(-)-syringaresinol-4,4′-bis-β-O-D-glucopyranoside(1),gentiaphyllide-D(2),erythrecentaurin(3),macrophyiioside D(4),gentiaphyllide-E(5),roburic acid(6),uvaol(7),β-sitosterol(8),daucosterol(9),gentianose(10),β-glucose(11),and α-glucose(12),respectively.Conclusion Compounds 1-6 and 10 are isolated from this plant for the first time.