title: 3,5-Di-O-benzoyl-1,2-O-isopropyl-idene-α-d-ribo-hexos-3-ulo-1,4:3,6-difuran-ose.
abstract: The title compound, C(23)H(22)O(8), is a binary benzoyl ester whose nucleus consists of a fused system made up of a methyl-enedi-oxy ring and two tetra-hydro-furan rings. One of the benzoyl ester groups is attached at the junction of the two tetra-hydro-furan rings. The other is attached to the outer tetra-furan ring. Both the benzoyl ester groups are in an axial conformation with respect to the outer tetrhydro-furan ring. In the crystal, mol-ecules are linked by two weak C-H⋯O hydrogen bonds, forming a chain running parallel to the a axis.
authors.affiliation: New Drug Reseach & Development Center, Zhengzhou Univresity, Zhengzhou 450001, People's Republic of China.
authors.forename: Qiurong
authors.initials: Q
authors.lastname: Zhang
authors.forename: Xuebin
authors.initials: X
authors.lastname: Chen
authors.forename: Nan
authors.initials: N
authors.lastname: Zhu
authors.forename: Tengfei
authors.initials: T
authors.lastname: Jiang
authors.forename: Hongmin
authors.initials: H
authors.lastname: Liu