title: 2,3:4,5-Di-O-isopropyl-idenefructos-1-yl p-toluene-sulfonate.
abstract: The title compound, C(19)H(26)O(8)S, has been synthesized from 2,3:4,5-di-O-isopropyl-idene-β-d-fructopyran-ose. The absolute configuration of the fused ring is confirmed by anomalous dispersion effects in the diffraction measurement. The six-membered β-fructopyran-ose ring has a twist-boat conformation with the two five-membered rings trans to each other. In the crystal, inter-molecular non-classical C-H⋯O hydrogen bonds link the mol-ecules into a three-dimensional network.
authors: School of Pharmaceutical Science and Technology, Dalian University of Technology, PO Box 90, Zhongshan Road 158, Dalian 116012, People's Republic of China.
authors: Shiyong
authors: S
authors: Huo
authors: Yueqing
authors: Y
authors: Li
authors: Chaoyan
authors: C
authors: Liang
authors: Jihong
authors: J
authors: Liu
authors: Weijie
authors: W
authors: Zhao
references: Carbohydr Res. 2007 Jul 2;342(9):1249-53
references: 17368437
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677
references: J Med Chem. 1989 Sep;32(9):2110-6
references: 2769683