Thermal degradation of glycosides, II. Thermal effect on acetates of typical triterpenoid and steroid glycosides

✍ Scribed by Higuchi, Ryuichi ;Noguchi, Yuko ;Kitamura, Yoichi ;Kim, Youn Chul ;Komori, Tetsuya

• Publisher: John Wiley and Sons
• Year: 1988
• Tongue: English
• Weight: 474 KB
• Volume: 1988
• Category: Article
• ISSN: 0947-3440
• DOI: 10.1002/jlac.198819880812

✦ Synopsis

I he tennal emcct on scctates of tritcrpcnoid and slcraid glycosides was examined. Contrary to thc casc or free glycosides, on heating ihc acciatcs of typical tritcrpcnoid and steroid glycosidcs (including cardi;ic glycosides) on a melting point apparatus the cleavage reactions c d sugar-aglycone and sugarsugar linkage did not txke place, and no aglyccincs or prosapogenins were obiaincd. Ifowever. two interesting and userul reactions did occur in thc coursc ol thcrinolysis of cardiac glycoside acetates. By taking into itccount the thcrmal cNect on the glycosidc acctatcs, and thcir FD mass spectra, an important suggcstion on the mechanism or FD Inass fragmcntation of thc glycosidic linkage was obtained.