Iridoids and secoiridoids from Gentiana linearis

Abstract Phytochemical investigation of the methanolic extract of Gentiana linearis roots led to the isolation of two novel iridoids (7- O -coumaroyl-loganic acid; 7- O -(4″- O -glucosyl)coumaroyl-loganic acid) and a new secoiridoid (6″″- O -glucosyltrifloroside) together with trifloroside, gentiopicroside, isovitexin and isosaponarin. The structures have been elucidated by MS and NMR spectral data, enzymic and chemical degradation. The chemotaxonomic significance of the isolated secoiridoids and iridoids is briefly discussed.