Objective: To study the components in the root of Pedicula dicora.
Methods: Column chromatography with silica gel and polyamide was employed for the isolation and purification of ingredients. The structures were elucidated by spectral method.
Result: Three iridoid glycosides were obtained and elucidated as mussaenoside, shanzhiside methyl ester and lamalbid.
Conclusion: All the three compounds were separated from P. dicora for the first time.