ISSN:
0170-2041
Keywords:
Degradation, thermal
;
Glycosides
;
Flavonoid glycosides
;
FDMS fragmentation
;
Carbohydrates
;
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
By mere heating, the flavone (1, 7), flavanone (4, 10), and flavonol glycosides (13, 14) are converted into their aglycones and monoglycosides. The products of pyrolysis have been isolated by chromatography and their structures elucidated by chemical and spectroscopic methods. The compound derived from the sugar moiety in the pyrolysis of glucosides has been identified as levoglucosan (17). From the structures of some minor products (16, 18, 19), generated by the thermal degradation, a mechanism of their generation and the elucidation of the structures of rearranged ions (for example [M + 146 + H]+), often generated in the FD-mass spectra of glycosides, are presented.
Additional Material:
3 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jlac.1991199101221
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