G. Batta et al., CONFORMATIONAL STABILIZATION OF THE ALTRURONIC ACID RESIDUE IN THE O-SPECIFIC POLYSACCHARIDE OF SHIGELLA-SONNEI PLESIOMONAS-SHIGELLOIDES, Carbohydrate research, 305(1), 1997, pp. 93-99
Complete assignments for the H-1- and the C-13-NMR spectra of the O-sp
ecific polysaccharide of S. sonnei/Plesiomonas shigelloides are report
ed. Evidence is presented that in this polysaccharide both pyranose re
sidues exist preferentially in the C-4(1) chair conformation and that
the polysaccharide exists in the zwitterion form. (C) 1998 Elsevier Sc
ience Ltd.