X-Ray crystallography and H-1 NMR spectroscopy indicate that the conformati
ons of both rings A and B and the relative orientation of the rings in the
C-linked disaccharide 1,3,4,6-tetra-O-acetyl-2-C-(4,6-di-O-acetyl-2,3-dideo
xy-alpha-D-erythro-hex-2-enopyranosyl)-2-deoxy-beta-D-glucopyranose in solu
tion are virtually identical to the crystalline structure.