Abstract
Permethylated C-glycosylflavones give well defined MS, including in all cases an important molecular peak. The observed fragmentations are characteristic for the nature and position of the sugar. The 6- C and 8- C glycosylated derivatives are clearly differentiated. In dissymmetrical 6,8-di- C-glycosylflavones, the natures of the sugar in both the 6- and 8- positions can be determined. The structures of several natural compounds are discussed.
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