以乙醇提取,硅胶柱层析分离和波谱方法鉴定结构,从竹节草地上部分分离鉴定出5个化合物:3β-羟基-5,α8α-桥二氧麦角甾-6,22-二烯(Ⅰ)、槲皮素(Ⅱ)、3-O-β-D-吡喃葡萄糖(6→1)-α-L-鼠李糖槲皮素(Ⅲ)、胡萝卜苷(Ⅳ)、po insettifo lin ...以乙醇提取,硅胶柱层析分离和波谱方法鉴定结构,从竹节草地上部分分离鉴定出5个化合物:3β-羟基-5,α8α-桥二氧麦角甾-6,22-二烯(Ⅰ)、槲皮素(Ⅱ)、3-O-β-D-吡喃葡萄糖(6→1)-α-L-鼠李糖槲皮素(Ⅲ)、胡萝卜苷(Ⅳ)、po insettifo lin A 3-O-[3′″″-乙酰基-α-L-吡喃阿拉伯糖基-(1′″″→6″″)]-β-D-吡喃葡萄糖苷(Ⅴ).其中化合物Ⅴ为新化合物,化合物Ⅰ和Ⅲ系首次从该属植物中分离得到.展开更多
Two new compounds, oleanolic acid 28-O--D-glucopyranosyl-3-O--L-arabinopyrano- syl-(13)-(6-butyl ester)--D-glucuropyranoside 1, oleanolic acid 28-O--D-glucopyranosyl- (16)--D-glucopyranoside 2 have been isolated from ...Two new compounds, oleanolic acid 28-O--D-glucopyranosyl-3-O--L-arabinopyrano- syl-(13)-(6-butyl ester)--D-glucuropyranoside 1, oleanolic acid 28-O--D-glucopyranosyl- (16)--D-glucopyranoside 2 have been isolated from the roots of Hemsleya penxianensis var. gulinensis. Their structures were determined on the bases of the spectral and chemical evidences.展开更多
Oleanolic acid 1 exists widely in food,medicinal herbs and other plants and possesses many attractive biological activities. Recently,some oleanolic derivatives were reported to have interesting anti-tumor activities....Oleanolic acid 1 exists widely in food,medicinal herbs and other plants and possesses many attractive biological activities. Recently,some oleanolic derivatives were reported to have interesting anti-tumor activities.Herein,using association principle of drug design,OA disaccharide 17 was designed and synthesized by coupling a-L-rhamnopyranosyl-(1→2)-a-L-arabinopyranosyl disaccharide moiety,which has proved to be a unique sugar sequence with strongly antitumor activity,and modified OA with a nitrile at C-17.展开更多
文摘以乙醇提取,硅胶柱层析分离和波谱方法鉴定结构,从竹节草地上部分分离鉴定出5个化合物:3β-羟基-5,α8α-桥二氧麦角甾-6,22-二烯(Ⅰ)、槲皮素(Ⅱ)、3-O-β-D-吡喃葡萄糖(6→1)-α-L-鼠李糖槲皮素(Ⅲ)、胡萝卜苷(Ⅳ)、po insettifo lin A 3-O-[3′″″-乙酰基-α-L-吡喃阿拉伯糖基-(1′″″→6″″)]-β-D-吡喃葡萄糖苷(Ⅴ).其中化合物Ⅴ为新化合物,化合物Ⅰ和Ⅲ系首次从该属植物中分离得到.
基金supported by Natural Science Foundation of Yunnan and National Natural Science Foundation of China (Grant No.98C089M and No.39970086). The authors were grateful to the Departmental of Instrument Analysis Kunming Institute of Botany Chinese Academy o
文摘Two new compounds, oleanolic acid 28-O--D-glucopyranosyl-3-O--L-arabinopyrano- syl-(13)-(6-butyl ester)--D-glucuropyranoside 1, oleanolic acid 28-O--D-glucopyranosyl- (16)--D-glucopyranoside 2 have been isolated from the roots of Hemsleya penxianensis var. gulinensis. Their structures were determined on the bases of the spectral and chemical evidences.
基金supported by the National Natural Sciences Foundation of China(No.81072532)Scientific Research Fund of Sichuan Provincial Education Department(No.11205023)
文摘Oleanolic acid 1 exists widely in food,medicinal herbs and other plants and possesses many attractive biological activities. Recently,some oleanolic derivatives were reported to have interesting anti-tumor activities.Herein,using association principle of drug design,OA disaccharide 17 was designed and synthesized by coupling a-L-rhamnopyranosyl-(1→2)-a-L-arabinopyranosyl disaccharide moiety,which has proved to be a unique sugar sequence with strongly antitumor activity,and modified OA with a nitrile at C-17.