title: Crystal structure of 3-de-oxy-3-nitro-methyl-1,2;5,6-di-O-iso-propyl-idene-α-d-allo-furan-ose.
abstract: The title compound, C13H21NO7 {systematic name: (3aR,5S,6R,6aR)-5-[(R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-6-(nitro-meth-yl)tetra-hydro-furo[2,3-d][1,3]dioxole}, consists of a substituted 2,2-di-methyl-tetra-hydro-furo[2,3-d][1,3]dioxolane skeleton. The furan-ose ring A adopts a (o)T 4 conformation. The fused dioxolane ring B and the substituent dioxolane ring C also have twisted conformations. There are no strong hydrogen bonds in the crystal structure: only weak C-H⋯O contacts are present, which link the mol-ecules to form a three-dimensional structure.
authors.affiliation: Institute of Technology of Organic Chemistry, Faculty of Materials Science and, Applied Chemistry, Riga Technical University, P. Valdena 3/7, Riga, LV-1048, Latvia.
authors.forename: Jevgeņija
authors.initials: J
authors.lastname: Lugiņina
authors.affiliation: Institute of Technology of Organic Chemistry, Faculty of Materials Science and, Applied Chemistry, Riga Technical University, P. Valdena 3/7, Riga, LV-1048, Latvia.
authors.forename: Vitālijs
authors.initials: V
authors.lastname: Rjabovs
authors.affiliation: Latvian Institute of Organic Synthesis, Str. Aizkraukles 21, Riga, LV 1006, Latvia.
authors.forename: Dmitrijs
authors.initials: D
authors.lastname: Stepanovs
keywords: C(3)-nitro­methyl allose; C—H⋯O hydrogen bonding; allo­furan­ose; crystal structure; nitro carbohydrate; nitro sugar