Studies on Constituents of Medical Plants. IV

Chemical Structure of Paulownin, a Component of Wood of Paulownia tomentosa STEUD

Abstract

d-Sesamin and Paulownin, colorless crystals, C₂₀H₁₈O₇⋅CH₃OH, m. p. 84°, were isolated from the wood of Paulownia tomentosa STEUD. Paulownin afforded protocatechuic acid by alkali fusion, piperonylic acid by potassium permanganate oxidation, and 1, 2-methylenedioxy-4, 5-dinitrobenzene and oxalic acid by nitric acid oxidation. The above facts and UV, IR and NMR spectra suggest that paulownin could be formulated as II.