显脉香茶菜化学成分的研究

Studies on Chemical Constituents of Rabdosia nervosa The Structure of Rabdonervosin C Isolated from Veined Rabdosia (Rabdosia nervosa)

在继续对显脉香茶菜 Rabdosia nervosa (Hemsl) C.Y.Wu et H.W.L i茎叶有效成分的研究中 ,又分得一种新的对映 -贝壳杉烷型二萜 ,经理化常数和波谱分析 ,确定其结构为 1α,15 β-二羟基 - 6 β-乙氧基 - 6 ,7- B-断裂 -对映 -贝壳杉 - 16 -烯 - 6 ,2 0 -环氧 - 7,2 0 -内酯 ,命名为显脉香茶菜丙素 (rabdonervosin C)

In continuation of our investigation, a new diterpene, rabdonervosin C (Ⅰ), was isolated from the leaves and stems of Rabdosia nervosa (Hemsl ) C Y Wu et H W Li Its structure was identified as 1α, 15β, dihydroxy 6β ethoxy 6, 7 B seco ent kaur 16 en 6, 20 epoxy 7, 20 δ olide on the basis of spectroscopic (MS, IR, 1HNMR, 13 CNMR, DEPT and 2D NMR) data and in comparison with the known rabdonervosin A(Ⅲ) and B (Ⅱ)