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Updated: May 4, 2026

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
Published on: August 14, 2019
Two new compounds from the flowers of Rhododendron molle
Shao-Nong Chen1, Guan-Hu Bao2, Li-Quan Wang3
1Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; College of Pharmacy, University of Illinois at Chicago, Chicago IL, 60612, USA.
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.
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