Two new iridoid glycosides from Odontites vulgaris

Two new iridoid glycosides, named 3′-O-benzoyl-dolichocymboside D (1) and dolichocymboside E (2), along with ten known glycosides (3–12), were isolated from the ethanol extract of the whole plants of Odontites vulgaris Moench. The structures of the isolated compounds were elucidated by 1D and 2D NMR and HR-ESI-MS spectra and by comparison with those reported in the literature. This is the first report on compounds 11 and 12 isolated from the family Scrophulariaceae, and compounds 8–10 were isolated from the genus Odontites.