title: 6-Azido-3-O-benzyl-6-de-oxy-N,N-diethyl-1,2-O-isopropyl-idene-d-glycero-α-d-gluco-heptofuran-uronamide.
abstract: Reaction of 3-O-benzyl-1,2-O-isopropyl-idene-α-xylo-pentodialdo-1,4-furan-ose with N,N-diethyl-2-(dimethyl-sulfuranil-idene)acetamide gave stereoselectively an ep-oxy-amide, which was regioselectively opened by NaN(3) in dimethyl formamide to give the title compound, C(21)H(30)N(4)O(6). X-ray crystallography confirmed the relative stereochemistry of the title compound and the absolute configuration was determined by the use of d-glucose as the starting material. There are two mol-ecules in the asymmetric unit (Z' = 2). The crystal structure consists of two types of chains of O-H⋯O hydrogen-bonded mol-ecules running parallel to the b axis, with each mol-ecule acting as a donor and acceptor of one hydrogen bond.
authors.forename: S F
authors.initials: SF
authors.lastname: Jenkinson
authors.forename: N
authors.initials: N
authors.lastname: Oña
authors.forename: A
authors.initials: A
authors.lastname: Romero
authors.forename: G W J
authors.initials: GW
authors.lastname: Fleet
authors.forename: A L
authors.initials: AL
authors.lastname: Thompson
authors.forename: M S
authors.initials: MS
authors.lastname: Pino-González