Abstract: During investigation of the chemical constituents of the whole plant ethanol extract of Pedicularis dolichocymba Hand.-Mazz. (Scrophulariaceae), four new iridoid glycosides, dolichocymbosides A (compound 1), B (compound 2), C (compound 3) and D (compound 4), were isolated. Their structures were determined based on spectral data including 1D and 2D-nuclear magnetic resonance spectroscopy (1H-1H COSY, HSQC, HMBC, ROESY) and FAB-MS. （Author for correspondence. Tel (Fax): +86 (0)871 5223 800; E-mail: nhtan@mail.kib.ac.cn）

Key words: dolichocymboside A, D, iridoid glycosides, Pedicularis dolichocymba, Scrophulariaceae.