【摘要】 从大萼香茶菜变型叶中分得6种成分,其中三种是新的二萜,命名为大萼变型乙素、丙素和戊素。根据光谱和化学证据,推定了其化学结构为(1)、(3)和(7)。(1)和(3)都具有明显的细胞毒和抑菌作用。另外三种成分分别鉴定为齐墩果酸、β-谷甾醇和胡萝卜甙。更多还原

【Abstract】 From the leaves of Rabdosia macrocalyx(Dunn) Hara form (Labiatae),three new diterpenoids,macrocalyxoformin B,C and E,were isolated together with oleanolic acid, β-sitosterol and daucosterol.Their structures were established as (1),(3) and (7) by spectroscopic and chemical evidence respectively.Macrocalyxoformin B and C were shown to have inhibitory action on Hela cells,Staphylococcus aureus in Vitro.更多还原