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G.l.c.-m.s. of partially methylated and acetylated derivatives of l-glycero-d-manno- and d-glycero-d-manno-heptopyranoses and -heptitols

✍ Scribed by Otto Holst; Helmut Brade; Krzysztof Dziewiszek; Aleksander Zamojski

Book ID: 102993646
Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 545 KB
Volume: 204
Category: Article
ISSN: 0008-6215
DOI: 10.1016/0008-6215(90)84016-n

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✦ Synopsis

Methylated or acetylated heptopyranose derivatives were prepared variously from L-glycero-D-manno- and D-glycero-D-manno-heptopyranose, O-L- glycero-alpha-D-manno-heptopyranosyl-(1----3)-L-glycero-D-manno- heptopyranose, O-L-glycero-alpha-D-manno-heptopyranosyl-(1----7)-L-glycero- D-manno-heptopyranose, and O-L-glycero-alpha-D-manno- heptopyranosyl-(1----7)-O-L-glycero-alpha-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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