title: Structural elucidation by field desorption and electron-impact mass spectrometry of the C-mycosides isolated from Mycobacterium smegmatis.
abstract: C-mycosides are superficial type-specific glycopeptidolipids of mycobacterial origin. In the present work, we have shown that field desorption mass spectrometry using the cationization method is a useful method for the molecular weight determination of such compounds. Complementary structural information has been obtained by electron-impact mass spectrometry. Combination of both methods has permitted the elucidation of the structure of the C-mycosides of Mycobacterium smegmatis, ATCC 607. This structure is similar to those described elsewhere, but some minor differences are observed in the lipid portion, mainly in the double bond location.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D004583:Electrons; D006027:Glycosides / Q000302:isolation & purification*; D013058:Mass Spectrometry; D009161:Mycobacterium / Q000032:analysis*
chemical_list: D006027:Glycosides