Some Constituents of Piptocalyx moorei Oliv

Abstract

Light petroleum extracts of the New South Wales bitter vine, Piptocalyx moorei Oliv., have yielded β-sitosterol, a trace of a red crystalline substance (probably carotenoid), and a new lignan of the αα?-diaryl-ββ?-dimethyltetrahydrofuran series whose detailed structure and partial stereochemistry are established by proton magnetic resonance measurements. Methanol extracts have yielded quercitrin and a practically tasteless β-D-glucopyranoside, C₁₇H₂₄O₁₂ ; the aqueous mother liquors remain intensely bitter.