Studies on the Consituents of Firmiana platanifolia Schott et Endell(1)

벽오동 firmiana platanifolia의 성분연구 (I)

A colorless needle crystlline substance, m.p. 170-$171^{\circ}C$ was obtained from the bark of Firmiana platanifolia in 4% yield. The acetylation derivative of this compound shows m.p. 163--$164^{\circ}C$. Through pharmacological screening tests, it was found that the original substance has an augmented contractility for isolated frog muscle in doses of 2.5$\times$10$^{-4}$ - 1$\times$10$^{-3}$g/ml.