G.l.c.-m.s. of partially methylated and acetylated derivatives of l-glycero-d-manno- and d-glycero-d-manno-heptopyranoses and -heptitols
1990; Elsevier BV; Volume: 204; Linguagem: Inglês
10.1016/0008-6215(90)84016-n
ISSN1873-426X
AutoresOtto Holst, Helmut Brade, Krzysztof Dziewiszek, Aleksander Zamojski,
Tópico(s)Legume Nitrogen Fixing Symbiosis
ResumoMethylated or acetylated heptopyranose derivatives were prepared variously from l-glycero-d-manno- and d-glycero-d-manno-heptopyranose, O-l-glycero-a-d-manno-heptopyranosyl-(1 → 3)-l-glycero-d-manno-heptopyranose, O-l-glycero-a-d-manno-heptopyranosyl-(1 → 7)-l-glycero-d-manno-heptopyranose, and O-l-glycero-a-d-manno-heptopyranosyl-(1 → 7)-O-l-glycero-a-d-manno-heptopyranosyl-(1 → 3)-l-glycero-d-manno-heptopyranose, which are structural elements of the heptose region of enterobacterial lipopolysaccharides. Each derivative was investigated by g.l.c. and g.l.c.-m.s., and the retention times and fragmentation patterns were used to identify partial structures of the heptose region of the core oligosaccharide of bacterial LPS.
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