common C19-steroids, the other frm digitoxigenin, are described. The less active minor epimer (21S)-methyldigitoxigenin was also obtained and characterized. The positive inotropic effects and margins of safety of the two C(21)-epimers (tested as glucosides) are discussed in terms of the topological properties of the Digitalis receptors.
描述了两种有效的标题化合物的制备方法,一种来自普通的C 19-类
固醇,另一种来自手指数字氧黄蛋白(frm digitoxigenin)。还获得并表征了活性较低的次要差向异构体(21 S)-甲基
洋地黄毒苷。根据洋地黄受体的拓扑特性,讨论了正性肌力作用和两个C(21)-受体的安全裕度(经测试为糖苷)。