New quassinoid glucosides, picrasinoside-B,-C,-D,-E,-F, and -G, and quassinoid hemiacetals, picrasinol-A and -B, were isolated from the bark of Piorasma ailanthoides PLANCHON, and their structures are established by spectral analysis and chemical transformations.
通过光谱分析和
化学转化,从普兰昌(Piorasma ai
LAnthoides P
LANCHON)树皮中分离出了新的
槲皮苷(picrasinoside-B,-C,-D,-E,-F,和-G)和
槲皮半
乙酸酯(picrasinol-A和-B),并确定了它们的结构。