The autoxidation of strophanthidin (I) in concentrated solution yields a neutral main product, aglycone A. Its structure was established as 10β-hydroxy-19-nor-periplogenin (II). The novel cardenolide arises from strophanthidin in a rearrangement reaction involving loss of carbon dioxide; the mechanism is discussed.
鸟粪蛋白(I)在浓溶液中的自
氧化作用产生中性的主要产物糖苷配基A。其结构被确定为10β-羟基-19-去过Perloglogenin(II)。新型心果内
酯是在结合
二氧化碳而发生的重排反应中,由
鸟嘌呤引起的。讨论了该机制。