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4-Nitro-phenyl ?-l-rhamnopyran-oside hemihydrate.

ABSTRACT: In the title compound, C(12)H(15)NO(7)·0.5H(2)O, there are two independent mol-ecules in the asymmetric unit, together with one water molecule. The pyran-oside rings each have close to a (1)C(4) chair conformation and the nitro groups are almost coplanar with the benzene rings. The water mol-ecule links the two independent mol-ecules through O-H?O hydrogen bonds. All the hydroxyl groups are involved in hydrogen-bond inter-actions, giving rise to a three-dimensional network.

SUBMITTER: Peltier P

PROVIDER: S-EPMC2960228 | biostudies-literature | 2008 Jan

REPOSITORIES: biostudies-literature

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4-Nitro-phenyl α-l-rhamnopyran-oside hemihydrate.

Peltier Pauline P Daniellou Richard R Roisnel Thierry T Nugier-Chauvin Caroline C Ferrières Vincent V

Acta crystallographica. Section E, Structure reports online 20080109 Pt 2

In the title compound, C(12)H(15)NO(7)·0.5H(2)O, there are two independent mol-ecules in the asymmetric unit, together with one water molecule. The pyran-oside rings each have close to a (1)C(4) chair conformation and the nitro groups are almost coplanar with the benzene rings. The water mol-ecule links the two independent mol-ecules through O-H⋯O hydrogen bonds. All the hydroxyl groups are involved in hydrogen-bond inter-actions, giving rise to a three-dimensional network. ...[more]

PMID: 21201409

Similar Datasets

4-Nitro-phenyl ?-l-rhamnopyran-oside hemihydrate.

Project description:The absolute configuration of the title compound, C(12)H(15)NO(7)·0.5H(2)O, was assigned from the synthesis. There are two rhamnoside mol-ecules and one water mol-ecule in the asymmetric unit, displaying O-H?O hydrogen bonding. One of the nitro groups does not conjugate efficiently with the benzene ring.

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2-Phenyl-ethyl 1-thio-?-d-galactopyran-oside hemihydrate.

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Crystal structure of 4-nitro-phenyl 6-<i>O</i>-ethyl-β-d-galacto-pyran-oside monohydrate.

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2,3,4,6-Tetra-O-benzoyl-4-nitro-phenyl-1-thio-?-d-mannopyran-oside-dichloro-methane-diethyl ether mixed solvate (1/0.53/0.38).

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Project description:The title compound, C(21)H(24)O(11), crystallizes exclusively as the ?-anomer. The substituent of the protected sugar at position C-3 is in the axial position, while all other groups are in equatorial positions. The pyran-oside ring adopts a stable chair conformation.

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4-Nitro-phenyl N-phenyl-carbamate.

Project description:The title compound, C(13)H(10)N(2)O(4), was synthesized as an inter-mediate for the preparation of ureas. The two aromatic rings are twisted about the central carbamate group with a C-C-N-C torsion angle of 139.6?(2)° and a C-C-O-C torsion angle of 95.9?(2)°. The mol-ecules are linked into one-dimensional chains by N-H?O hydrogen bonds along the b axis. Weak inter-actions between O atoms of the nitro groups (O?O = 3.012?Å) connect two adjacent chains.

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4-Formyl-phenyl 2,3,4,6-tetra-O-acetyl-β-d-galactopyran-oside.

Project description:The galactose ring in the title compound, C(21)H(24)O(11), has a chair conformation with the substituted benzene ring occupying an equatorial position. The crystal packing features C-H⋯O inter-actions that lead to the formation of supra-molecular layers in the ab plane.

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