Sung T V, Steglich W, Adam G
Institute of Natural Products Chemistry, National Research Centre of Vietnam, Nghia do, Tu liem, Hanoi.
Phytochemistry. 1991;30(7):2349-56. doi: 10.1016/0031-9422(91)83647-4.
In addition to 3-epi-betulinic acid, three triterpene glycosides were isolated from leaves of Schefflera octophylla. The structures of the glycosides have been determined as 28-O-[alpha-L-rhamnopyranosyl(1----4)-O-beta-D-glucopyranosyl(1----6)-be ta-D- glucopyranosides of 3 alpha-hydroxy-lup-20(29)-ene-23,28-dioic acid, 3 alpha,11 alpha- dihydroxy-lup20(29)-ene-23,28-dioic acid and 3-epi-betulinic acid by spectroscopic data and chemical transformations. The last two compounds were found for the first time in the plant kingdom.
除了3-表桦木酸外，从八角金盘叶中还分离出三种三萜糖苷。通过光谱数据和化学转化，已确定这些糖苷的结构分别为3α-羟基羽扇豆-20(29)-烯-23,28-二酸、3α,11α-二羟基羽扇豆-20(29)-烯-23,28-二酸和3-表桦木酸的28-O-[α-L-鼠李糖基(1→4)-O-β-D-葡萄糖基(1→6)-β-D-葡萄糖苷。后两种化合物在植物界中首次被发现。
