Two new compounds from the flowers of Rhododendron molle

AIM:To study the chemical constituents of the flowers of Rhododendron molle.METHODS:Compounds were isolated by repeated chromatography over silica gel and Sephadex LH-20.Structures were elucidated based on spectral techniques,mainly 1D-and 2D-NMR and mass spectrometric analyses.RESULTS:Two compounds(1 and 2) were isolated.CONCLUSIONS:Compounds 1 and 2 were identified as two new compounds:2α,10α-epoxy-3β,5β,6β,14β,16α-hexahydroxy-grayanane and benzyl 2,6-dihydroxybenzoate-6-O-α-L-rhamnopyranosyl-(1→3)-β-D-glucopyranoside,respectively.