The aerial part of Prasium majus afforded Melittoside 1 and a flavone glycoside Chrysoeriol 7-(2"-O-β-D-allopyranosyl)-β-D-glycopyranoside 2. Their structures were established via their uncompletely acetylated derivatives on the basis of spectroscopic measurements, mainly 2D NMR.
S. Hammami, H. Ben Jannet, Z. Mighri, J.M. Nuzillard
Prasium majus, Lamiaciatae, iridoid glycoside, flavonoid glycoside, 2D NMR