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. 1983 Dec 1;215(3):597–604. doi: 10.1042/bj2150597

2,3-diamino-2,3-dideoxy-D-glucofuranurono-6,3-lactam from the hydrolysate of Pseudomonas aeruginosa P14 lipopolysaccharide.

S Okuda, N Suzuki
PMCID: PMC1152441  PMID: 6419728

Abstract

An unknown amino sugar, U-7, which had been detected in the hydrolysate of the polysaccharide fraction (F-A) of Pseudomonas aeruginosa P14 lipopolysaccharide, was isolated from the hydrolysate of whole cells of this micro-organism and converted into the N-acetyl derivative (U-7NAc). On the basis of i.r.-absorption spectrometry, 13C-n.m.r. and 1H-n.m.r. spectroscopy and mass spectrometry, the structure of compound U-7NAc was identified as 2-acetamido-3-amino-2,3-dideoxyhexofuranurono-6,3-lactam. The configuration of compound U-7NAc was then unequivocally identified as 2-acetamido-3-amino-2,3-dideoxy-D-glucofuranurono-6,3-lactam by comparing the synthetic and natural compounds. Compound U-7 and synthetic 2,3-diamino-2,3-dideoxy-D-glucofuranurono-6,3-lactam showed the same behaviour on chromatography. G.l.c.--mass-spectral analyses of fraction F-A and synthetic 2,3-diacetamido-2,3-dideoxy-D-glucuronic acid after methanolyses and trimethylsilylations showed the presence of the same derivative. It was concluded that the amino sugar U-7 was produced from the 2,3-diacetamido-2,3-dideoxy-D-glucuronic acid residue present in fraction F-A.

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Selected References

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