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J. Biol. Chem., Vol. 262, Issue 7, 3174-3179, 03, 1987
JJ Fournie, M Riviere and G Puzo
Data from the literature indicate the presence, in the Mycobacterium
kansasii wall, of a phenolic glycolipid called mycoside A. A tentative
trisaccharide structure was proposed for the oligosaccharide part, whereas
the aglycone was found to correspond to a phenol phthiocerol residue
esterified by two mycocerosic acids. In the present work, structural
information mainly arising from fast atom bombardment-mass spectrometry,
tandem mass spectrometry, and 1H NMR of native and chemically degraded
phenolic glycolipid indicates a tetrasaccharide structure for the inherent
oligosaccharide. This structure is now determined as:
2,6-dideoxy-4-O-methyl-arabino-hexopyranosyl(1 alpha---- 3)2-O-methyl-4-O-
acetylfucopyranosyl(1 alpha----3)2-O-methyl- rhamnopyranosyl(1
alpha----3)2-4-di- O-methylrhamnopyranosyl-1 alpha---- phenolglycol.
Evidence for the structure of the dideoxyhexose, unique in mycobacteria, is
presented in the following paper (Fournie, J.-J., Riviere, M., Papa, F.,
and Puzo, G. (1987) J. Biol. Chem. 262, 3180- 3184).
Structural elucidation of the major phenolic glycolipid from Mycobacterium kansasii. I. Evidence for tetrasaccharide structure of the oligosaccharide moiety
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