摘要
从弯蕊开口箭 (TupistrawattiiHook .f.)的新鲜根茎中分离出 2个新的多羟基甾体皂甙元 ,分别命名为弯蕊皂甙元B (wattigeninB) (1)和弯蕊皂甙元C (wattigeninC) (2 ) ,同时分离到 2个已知的甾体皂甙元———凯替皂甙元kitigenin (3)和铃兰皂甙元B (convallageninB) (4)。通过波谱解析鉴定了这 4个皂甙元的结构 ,并测定了它们在体外对肿瘤细胞K5 6 2和A2 780a的细胞毒活性。化合物 1～
Two novel polyhydroxylated steroidal sapogenins, wattigenin B ((25R)-spirost-1beta, 2beta, 3beta, 4beta, 5beta, 6beta, 7alpha-heptol, 1) and wattigenin C ((25S)-spirost-1beta, 2beta, 3beta, 4beta, 5beta, 7alpha-hexalrydroxyl-6-one, 2), together with two known sapogenins, kitigenin (3) and convallagenin B (4), were isolated froth the fresh rhizomes of Tupistra wattii Hook. f. The structures of the compounds were determined on the basis of spectroscopic analysis. The four sapogenins were evaluated for the cytotoxicities on the cancer cell line K562 and A2780a in vitro. Compounds 1 - 4 were obtained from the plant for the first time.
基金
国家重点基础研究发展规划项目 (G19980 5 1113 )
植物化学与西部植物资源可持续利用国家重点实验室资助项目~~
