Author/Authors :
Nafady، نويسنده , , Alaa Mohamed and El-Shanawany، نويسنده , , Mohamed Ahmed and Mohamed، نويسنده , , Mahmoud Hamed and Hassanean، نويسنده , , Hashim Abdel-Halim and Zhu، نويسنده , , Xing-Hua and Yoshihara، نويسنده , , Tsutomu and Okawa، نويسنده , , Masafumi and Ikeda، نويسنده , , Tsuyoshi and Nohara، نويسنده , , Toshihiro، نويسنده ,
Abstract :
The characteristic novel steroidal glycosides of the 23,26-oxygenated spirostanol-type and 16,22-dicarbonyl cholestanol-type obtained in our laboratory underwent the peculiar reactions of side-chain fission between C-22 and C-23 of the steroidal skeleton by acid or alkaline hydrolysis. These reactions would be applied to the structural determination of these sorts of glycosides and suggest the biogenetic pathway of the occurrence of C-22 lactone-type glycosides.
Keywords :
23 , 16 , 22-dicarbonyl cholestanol , side-chain fission , 26-oxygenated spirostanol , steroidal glycoside
