松柏類及び近縁植物の成分 (第23報)

植物蝋の研究 10 ウラジロ葉の成分 その2

抄録

A new crystalline substance was obtained from the mother liquor left after removal of wax from an extract of a fern, Diplopterygium glaucum. It was obtained in 0.02% yield, corresponded to the composition of C₃₀H₅₂O, m.p. 254-256°, [α]_D²⁵ +34.9 ±0.9° (c=0.039, CHCl₃), and it was named diplopterol. It colored reddish purple by the Liebermann reaction, similar to ursane or oleanane but does not color with tetranitromethane. Its infrared spectrum (in Nujol) exhibited absorption maxima at 3450 and 1150cm^-1. Its acetylation or benzoylation gave the same hydrocarbon of C₃₀H₅₀, and its oxidation with chromium trioxide afforded a ketone. These facts indicate the presence of one hydroxyl and this hydroxyl was found to be easily dehydrated.