title: 1,2:1',2'-Di-O-iso-propyl-idenedi-furan-ose-C12 higher carbon sugar.
abstract: In the title compound, C18H28O8, the five-membered ring with one O atom attached to the ethyl substituent has a twisted conformation about the C-O bond. The adjacent cis-fused ring with two O atoms also has a twisted conformation about one of the C-O bonds. The dihedral angle between these rings (all atoms) is 59.05 (12)°. The five-membered ring linked to the ethynyl susbtituent is twisted about a C-C bond; the cis-fused adjacent ring is twisted about a C-O bond [dihedral angle between the rings (all atoms) = 71.78 (12)°]. Two intra-molecular O-H⋯O hydrogen bonds occur. In the crystal, mol-ecules are linked by O-H⋯O hydrogen bonds, generating [001] chains.
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.affiliation: New Drug Reseach & Development Center, Zhengzhou Univresity, Zhengzhou 450001, People's Republic of China.
authors.forename: Guangqiang
authors.initials: G
authors.lastname: Zhou
authors.affiliation: New Drug Reseach & Development Center, Zhengzhou Univresity, Zhengzhou 450001, People's Republic of China.
authors.forename: Peng
authors.initials: P
authors.lastname: He
authors.affiliation: New Drug Reseach & Development Center, Zhengzhou Univresity, Zhengzhou 450001, People's Republic of China.
authors.forename: Xuebin
authors.initials: X
authors.lastname: Chen
authors.affiliation: New Drug Reseach & Development Center, Zhengzhou Univresity, Zhengzhou 450001, People's Republic of China.
authors.forename: Hongmin
authors.initials: H
authors.lastname: Liu