【摘要】 从河南省信阳地区产冬凌草叶中分得两种新的对映-贝壳杉烯型二萜化合物,命名为信阳冬凌草甲素和乙素,经光谱和化学方法证明,它们的结构分别为1和2.更多还原

【Abstract】 Xindongnin A and B,two new diterpenoids were isolated from the leaves of Rabdosiarubescens(Hemsl.)Hara collected in Xinyang,Henan.From spectroscopic evidences andchemical reactions the structures of the xindongnin A and B have been assigned as ent-11_α-hydroxy-3_α,7β-diacetoxy-16-kauren-6,15-dione(1)and ent-3_α,6β,12β-trihydro-xy-11 β-acetoxy-16-kauren-15-one(2)respectively.These two new compounds appearto be the first 6-C and 7-C,11-C and 12-C simultaneously oxygenated ent-kaurenoidsisolated from Rabdosia plants.更多还原