Two Acylated Diarylheptanoid Glycosides from Red Alder Bark

Abstract
Two novel acylated diarylheptanoid glycosides, oregonosides A and B (3, 4, respectively), were isolated from red alder bark and their structures established by spectrometric techniques. The compounds were identified as (5S)-1,7-bis(3,4-dihydroxyphenyl)-5-O-(6-O-benzoyl-β-d-glucopyranosyl)-heptan-3-one and (5S)-1,7-bis(3,4-dihydroxyphenyl)-5-O-(6-O-vanilloyl-β-d-glucopyranosyl)-heptan-3-one.