title: Crystal structure of [(2R,3R,4S)-3,4-bis(acet-yloxy)-5-iodo-3,4-di-hydro-2H-pyran-2-yl]methyl acetate.
abstract: In the title compound, C12H15IO7, the 3,4-di-hydro-2H-pyran ring is in a distorted half-boat conformation with the atom bearing the acet-yloxy group adjacent to the C atom bearing the methyl-acetate group lying 0.633 (6) Å above the plane of the remaining ring atoms (r.m.s. deviation = 0.0907 Å). In the crystal, mol-ecules are linked into a supra-molecular chain along the a axis through two C-H⋯O inter-actions to the same acceptor carbonyl O atom; these chains pack with no specific inter-molecular inter-actions between them.
authors.affiliation: Departmento de Química, Universidade Federal de São Carlos, 13565-905 São Carlos, SP, Brazil.
authors.forename: Julio
authors.initials: J
authors.lastname: Zukerman-Schpector
authors.affiliation: Departmento de Física, Universidade Federal de São Carlos, 13565-905 São Carlos, SP, Brazil.
authors.forename: Ignez
authors.initials: I
authors.lastname: Caracelli
authors.affiliation: Departamento de Farmácia, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo-SP, Brazil.
authors.forename: Hélio A
authors.initials: HA
authors.lastname: Stefani
authors.affiliation: Instituto de Química, Universidade de São Paulo, São Paulo-SP, Brazil.
authors.forename: Anwar
authors.initials: A
authors.lastname: Shamim
authors.affiliation: Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
authors.forename: Edward R T
authors.initials: ER
authors.lastname: Tiekink
keywords: Crystal structure; C—H⋯O inter­actions; carbohydrate; conformation; crystal structure