STRUCTURE OF A LACTONE, 2,4,6-TRIDEOXY-4,6-DIMETHYL-2-(2-OXOPROPYL)-7-O-(PHENYLMETHYL)-L-GLYCERO-D-MANNO-HEPTONO-1,5-LACTONE 3-(3,5-DINITROBENZOATE)

C26H28N2O10, M(r) = 528.5, triclinic, P1BAR, a = 9.524 (1), b = 11.8187 (8), c = 12.615 (1) angstrom, alpha = 66.512 (7), beta = 83.321 (9), gamma = 88.758 (8)-degrees, V = 1293.0 (4) angstrom 3, D(x) = 1.357 g cm-3, Z = 2, lambda(Cu K-alpha) = 1.54178 angstrom, mu = 8.99 cm-1, F(000) = 556, T = 293 K, final R = 0.039, wR = 0.048 for 2425 reflections with I > 3-sigma(I). The tetra-substituted valerolactone ring has a boat conformation and the relative stereochemistries of the three pairs of adjacent substituents are cis-trans-trans.