New prenylated isoflavones and a prenylated dihydroflavonol from Millettia pachycarpa
作者:Ashok K. Singhal、Ram P. Sharma、Gopalakrishna Thyagarajan、Werner Herz、Serengolam V. Govindan
DOI:10.1016/0031-9422(80)85140-5
日期:——
Abstract Extraction of Millettia pachycarpa Benth. gave 5,7,4′-trihydroxy-6,8-diprenylisoflavone (1a), 5,7,4′-trihydroxy-6,3′-diprenylisoflavone (2a), 5,7,3′,4′-tetrahydroxy-6,8-diprenylisoflavone (3a) and (2R, 3R)-5,4′-dihydroxy-8-prenyl-6″,6″-dimethylpyrano[2″,3″: 7,6]-dihydroflavonol (4a) whose structures were established by chemical transformations and spectroscopic means. Pectolinarigenin and
Millettia pachycarpa Benth的摘要提取。得到 5,7,4'-trihydroxy-6,8-diprenylisoflavone (1a), 5,7,4'-trihydroxy-6,3'-diprenylisoflavone (2a), 5,7,3',4'-tetrahydroxy- 6,8-diprenylisoflavone (3a) and (2R, 3R)-5,4'-dihydroxy-8-prenyl-6″,6″-dimethylpyrano[2″,3″: 7,6]-dihydroflavonol (4a)结构是通过化学转化和光谱方法建立的。Pectolinarigenin 和 Salvigenin 是从 Buddleia macrostachya Benth 中分离出来的。