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Methyl 6-azido-6-de-oxy-?-d-galactoside.

ABSTRACT: The structure of the title compound, C(7)H(13)N(3)O(5), was solved using data from a multiple fragment crystal. The galactoside ring adopts a (4)C(1) chair conformation. In the crystal, the molecules are linked by strong O-H?O hydrogen bonds, which build linkages around the screw axis of the cell in a similar way to the iodo analogue. These C-5 and C-6 packing motifs expand to R(2) (2)(10), C(2) (2)(7) and C(2) (2) (2)(8) motifs, as found in closely related compounds.

SUBMITTER: Cheng JM

PROVIDER: S-EPMC3212328 | biostudies-other | 2011 Aug

REPOSITORIES: biostudies-other

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Methyl 6-azido-6-de-oxy-α-d-galactoside.

Cheng Janice M H JM Gulab Shivali A SA Timmer Mattie S M MS Stocker Bridget L BL Gainsford Graeme J GJ

Acta crystallographica. Section E, Structure reports online 20110709 Pt 8

The structure of the title compound, C(7)H(13)N(3)O(5), was solved using data from a multiple fragment crystal. The galactoside ring adopts a (4)C(1) chair conformation. In the crystal, the molecules are linked by strong O-H⋯O hydrogen bonds, which build linkages around the screw axis of the cell in a similar way to the iodo analogue. These C-5 and C-6 packing motifs expand to R(2) (2)(10), C(2) (2)(7) and C(2) (2) (2)(8) motifs, as found in closely related compounds. ...[more]

PMID: 22090985

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Methyl 6-de-oxy-6-iodo-?-d-galactoside.

Project description:In the crystal of the title compound, C(7)H(13)IO(5), the molecules are linked by O-H?O hydrogen bonds, which build linkages around one screw axis of the cell. These C(5) and C(6) packing motifs expand to R(2) (2)(10) and C(2) (2)(11) motifs and are similar to those found for closely related compounds. The galactoside ring has a (1)C(4) chair conformation.

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Project description:Although 6-azido-6-de-oxy-l-galactose in aqueous solution is in equilibrium between the open-chain, furan-ose and pyran-ose forms, it crystallizes solely as 6-azido-6-de-oxy-α-l-galactopyran-ose monohydrate, C(6)H(11)N(3)O(5)·H(2)O, with the six-membered ring adopting a chair conformation. The structure exists as hydrogen-bonded chains, with each mol-ecule acting as a donor and acceptor of five hydrogen bonds. There are no unusual crystal packing features and the absolute configuration was determined from the use of 1-azido-1-de-oxy-d-galactitol as the starting material.

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Project description:The relative stereochemistry of the title compound, C(10)H(15)N(3)O(5), was confirmed by the crystal structure determin-ation. The absolute configuration was determined from the use of d-lyxonolactone as the starting material. The six-membered ring adopts a boat conformation with the larger azide group, rather than the methyl group, in the bowsprit position. In the crystal structure, a bifurcated inter-molecular O-H?O/O-H?N hydrogen bond links mol-ecules into chains running parallel to the b axis.

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Project description:In the title compound, C(14)H(19)N(3)O(4), the perhydro-pyran ring adopts a chair conformation. An intra-molecular C-H?O hydrogen bond generates an S(6) ring motif. In the crystal packing, mol-ecules are linked by O-H?O hydrogen bonds, forming infinite chains along [100].

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Project description:In the title compound, [Zn(C(11)H(8)N(5)O)(N(3))](n), the Zn atom is hexa-coordinated by five N atoms and one O atom in a distorted octa-hedral geometry. The chelating 5-(8-quinolyloxymeth-yl)tetra-zolate ligands are approximately planar, with a dihedral angle of 3.6?(2)° between the quinoline and tetra-zole planes. Adjacent Zn atoms are linked by two bridging azide ligands across a centre of inversion, and further coordination by one N atom of an adjacent tetra-zole unit forms two-dimensional frameworks in (100). C-H?N inter-actions exist between ligands in neighbouring layers.

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2-Azido-methyl-3-methyl-1-phenyl-sulfonyl-1H-indole.

Project description:In the title compound, C(16)H(14)N(4)O(2)S, the plane of the indole ring is twisted by 70.4 (2)° with respect to the plane of the azidomethyl- substituent. As a result of the electron-withdrawing character of the phenyl-sulfonyl groups, the N-C bond lengths are slightly longer than the anti-cipated value of approximately 1.355 Å for an N atom with a planar configuration. The indole ring is essentially planar, with a maximum deviation of 0.0296 Å. The azide group is almost linear, the N-N-N angle being 171.4 (3)°. The methyl group on the azide-substituted C atom is in a flagpole position. The phenyl ring of the sulfonyl substituent makes a dihedral angle of 87.07 (10)° with the best plane of the indole moiety. The crystal packing is stabilized by inter-molecular C-H⋯O inter-actions, which link the mol-ecules into infinite chains running parallel to the b axis. The crystal packing is further stabilized by C-H⋯π inter-actions.

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