Disaccharide nucleosides: The crystal and molecular structure of 2′- O -β- D -ribopyranosylcytidine

The crystal structure of a disaccharide nucleoside, 2′- O -β- D -ribopyranosylcytidine, is studied using X-ray diffraction (space group P 2 1 , a = 6.827(2) Å, b = 12.813(3) Å, c = 9.532(2) Å, β = 92.934(5)°, V = 832.7(4) Å 3 , Z = 2). The stereochemical features of the molecular structure of 2′- O -β- D -ribopyranosylcytidine are analyzed, and the structural data are compared with those obtained for the previously studied disaccharide nucleoside 2′- O -β- D -ribofuranosyluridine.