Constituents of bamboos and bamboo grasses

Abstract

The constituents of 13 species of bamboos and bamboo grasses were investigated. Almost all the species gave isoorientin and related flavone 6- C-glycosides as major constituents of leaves. Tricin 5-O-β-D-glucopyranoside and p-coumaric acid were also obtained as minor ones in some cases. (-)- Lyon-iresinol 3a-O-β-D-glucopyranoside and (+)-lyoniresinol 3a-O-β-D- glucopyranoside were common constituents in culms of 4 species examined. 3,4,5-Trimethoxyphenol β-D-glucopyranoside, koaburaside, 2,6-dimethoxy-p- benzoquinone, p-coumaric acid, sinapic aldehyde and ferulyl aldehyde occurred also in culms sporadically. Arbutin was a constituent of roots of a species examined.