A new lignan, together with a known one, was isolated from Isodon lophanthoides var. gerardianus [Bentham] H. Hara. The structure of the new lignan was elucidated as 1_acetoxyl_2e_piperonyl_6e_[6_methoxyl_pi...A new lignan, together with a known one, was isolated from Isodon lophanthoides var. gerardianus [Bentham] H. Hara. The structure of the new lignan was elucidated as 1_acetoxyl_2e_piperonyl_6e_[6_methoxyl_piperonyl]_3,7_dioxabicyclo_[3,3,0]_octane mainly by 1D and 2D NMR techniques.展开更多
The structures of two new abietane quinones, named micranthins A and B, were determined to be 7a-methoxy-14, 16-epoxy-8, 13-abietadiene-11, 12-dione (1) and 16-acetoxy-6, 7-dehydroroyleanone (2) respectively, which we...The structures of two new abietane quinones, named micranthins A and B, were determined to be 7a-methoxy-14, 16-epoxy-8, 13-abietadiene-11, 12-dione (1) and 16-acetoxy-6, 7-dehydroroyleanone (2) respectively, which were isolated from Isodon lophanthoides var. micranthus.展开更多
从线纹香茶莱Rabdosia var. lophanthoides Hara中分得五种成分,其中之一线纹香茶菜酸为Abietane acid型的新二萜酸。根据波谱解析、衍生物制备及X线单晶衍射,测定了它的化学结构。其余四种成分,分别鉴定为2α-羟基乌索酸、齐墩果酸、β...从线纹香茶莱Rabdosia var. lophanthoides Hara中分得五种成分,其中之一线纹香茶菜酸为Abietane acid型的新二萜酸。根据波谱解析、衍生物制备及X线单晶衍射,测定了它的化学结构。其余四种成分,分别鉴定为2α-羟基乌索酸、齐墩果酸、β-谷甾醇及β-谷甾醇-D-葡萄糖甙。展开更多
文摘A new lignan, together with a known one, was isolated from Isodon lophanthoides var. gerardianus [Bentham] H. Hara. The structure of the new lignan was elucidated as 1_acetoxyl_2e_piperonyl_6e_[6_methoxyl_piperonyl]_3,7_dioxabicyclo_[3,3,0]_octane mainly by 1D and 2D NMR techniques.
文摘The structures of two new abietane quinones, named micranthins A and B, were determined to be 7a-methoxy-14, 16-epoxy-8, 13-abietadiene-11, 12-dione (1) and 16-acetoxy-6, 7-dehydroroyleanone (2) respectively, which were isolated from Isodon lophanthoides var. micranthus.
文摘从线纹香茶莱Rabdosia var. lophanthoides Hara中分得五种成分,其中之一线纹香茶菜酸为Abietane acid型的新二萜酸。根据波谱解析、衍生物制备及X线单晶衍射,测定了它的化学结构。其余四种成分,分别鉴定为2α-羟基乌索酸、齐墩果酸、β-谷甾醇及β-谷甾醇-D-葡萄糖甙。