Isolation of iridoid and secoiridoid glycosides and comparative study on Radix gentianae and related adulterants by HPLC analysis

An acylatedsecoiridoid glycoside, named gentiotrifloroside (1) together with six known compounds were isolated from Gentiana triflora and Gentiana rigescens. All seven compounds were used successfully as chemical markers for the comparison of the four species of Gentiana used as Radix gentianae and differentiation from related adulterants.