One new iridoid glycoside from Hedyotis tenelliflora / 中草药

Objective: To study the chemical constituents of Hedyotis tenelliflora. Methods: The compounds were isolated by chromatographic separation technology. The structures were identified on the basis of physicochemical and spectral data. Results: Four iridoid glycosides were isolated from the whole plant of H. tenelliflora. On the basis of the chemical and spectral methods, their structures were elucidated as teneoside C (1), harpagoside (2), harpagide (3), and asperulosidic acid (4). Conclusion: Compound 1 is a new compound from H. tenelliflora, and compounds 2 and 3 are found for the first time in the plants of Hedyotis L.