Browse
Submit Data
Databases
API
Help

Dataset Information

32 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

2,3,4,6-Tetra-O-acetyl-β-d-galacto-pyrano-syl butyrate.

ABSTRACT: The title compound, C(18)H(26)O(11), was synthesized by a condensation reaction of 2,3,4,6-tetra-O-acetyl-α-d-galactopyranosyl bromide and butyric acid. The acet-oxy-methyl and butyrate groups are located on the same side of the pyran ring, showing the β configuration for the d-glycosyl ester; the butyl group adopts an extend conformation, the C-C-C-C torsion angle being 179.1 (7)°. In the crystal, the mol-ecules are linked by weak C-H⋯O hydrogen bonds.

SUBMITTER: Cui YL

PROVIDER: S-EPMC3275009 | biostudies-literature |

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Similar Datasets

2,3,4,6-Tetra-O-acetyl-β-d-galacto-pyranosyl 2,3,4,6-tetra-O-acetyl-β-d-glucopyranosyl disulfide tetra-hydro-furan solvate.

Project description:The asymmetric unit of title compound, C(28)H(38)O(18)S(2)·C(4)H(8)O, comprises one disulfide-bridged sugar molecule and one solvent molecule. No significant differences in structural parameters are found between the present structure and the previously determined unsolvated form [Brito, López-Rodríguez, Bényei & Szilagyi (2006 ▶). Carbohydr. Res.341, 2967-2972]. The compounds are characterized by a compact structure with spatial proximity of the two pyranosyl rings. One of the carbonyl atoms is disordered over two sites [site occupancy = 0.69 (7) for major component] and the displacement parameters for the THF species are unsually large.

| S-EPMC2959895 | biostudies-literature

Crystal structure of 4,6-dimethyl-2-[(2,3,4,6-tetra-<i>O</i>-acetyl-β-d-galacto-pyranos-yl)sulfan-yl]pyrimidine.

Project description:In the title com-pound, C20H26N2O9S, the S atom is attached equatorially to the sugar ring. The C-S bond lengths are unequal, with S-Cs = 1.8018 (13) Å and S-Cp = 1.7662 (13) Å (s = sugar and p = pyrimid-yl). In the crystal, a system of three weak hydrogen bonds, sharing an oxygen acceptor, links the mol-ecules to form chains propagating parallel to the b-axis direction.

| S-EPMC6895939 | biostudies-literature

2,3,4,6-Tetra-O-acetyl-β-d-galacto-pyranosyl 2-(2,4-dichloro-anilino)-4,4-dimethyl-6-oxocyclo-hex-1-enecarbo-dithio-ate.

Project description:The cyclo-hexene ring in the title compound, C(29)H(33)Cl(2)NO(10)S(2), adopts an envelope conformation, with the C atom bearing the two methyl groups representing the flap. This atom deviates by 0.63 (1) Å from the plane through the other five ring atoms (r.m.s. deviation = 0.11 Å). The mol-ecular conformation is stabilized by an intra-molecular N-H⋯S hydrogen bond. The crystal studied was a non-merohedral twin, with a minor twin component of 29%.

| S-EPMC2977784 | biostudies-literature

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.

| S-EPMC3099913 | biostudies-literature

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

Project description:The title compound, C(21)H(24)O(11), crystallizes exclusively as the β-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.

| S-EPMC2969774 | biostudies-literature

(2R,3S)-2-Benzyl-3-(2,3,4,6-tetra-O-acetyl-β-d-glucopyranos-yloxy)butanolide.

Project description:The title compound, C(25)H(30)O(12), which demonstrates a significant hepatoprotective effect, has comparable geometrical parameters to those of similar compounds. The absolute configuration of the title compound, viz. 2R,3S, was identified from the Flack parameter of 0.05 (17) and the Hooft parameter of 0.04 (6).

| S-EPMC2983542 | biostudies-literature

n-Propyl 2,3,4,6-tetra-O-acetyl-?-d-glucopyran-oside.

Project description:THE TITLE COMPOUND [SYSTEMATIC NAME: (2R,3R,4S,5R,6R)-2-(acet-oxy-meth-yl)-6-propoxytetra-hydro-2H-pyran-3,4,5-triyl triacetate], C(17)H(26)O(10), was formed by a Koenigs-Knorr reaction of 2,3,4,6-tetra-O-acetyl-?-d-glucopyranosyl bromide and n-propanol. The central ring adopts a chair conformation. The crystal does not contain any significant inter-actions such as hydrogen bonds.

| S-EPMC3569225 | biostudies-literature

1-Azido-ethoxy-2,3,4,6-tetra-O-acetyl-?-d-glucoside.

Project description:In the title compound, C(16)H(23)N(3)O(10), the galactopyran-oside ring adopts a chair conformation. All the non-H substituents are situated in equatorial positions. There are short intramol-ecular C-H?O contacts and an intermolecular C-H?O inter-action in the structure.

| S-EPMC2971226 | biostudies-literature

2,3,4,6-Tetra-O-acetyl-2-phthalimido-?-d-glucopyran-oside.

Project description:In the crystal structure of the title compound, C(24)H(27)NO(11), a substituted tetra-acetyl glucopyran-oside derivative, weak inter-molecular C-H?O hydrogen bonds link the mol-ecules into ribbons propagated in [010]. The d configuration has been attributed on the basis of the synthesis and the ? anomer has been determined from the structure.

| S-EPMC3011788 | biostudies-literature

3,4-Dicyano-phenyl 2,3,4,6-tetra-O-acetyl-?-d-glucopyran-oside.

Project description:The title compound, C(22)H(22)N(2)O(10), was prepared by the glycosidation method through nitrite displacement on substituted nitro-phthalonitrile. The mol-ecule contains a benzene ring, two nitrile groups and an acetyl-protected d-glucose fragment which adopts a chair conformation. The absolute configuration was determined by the use of d-glucose as starting material. All substituents of the protected sugar are in equatorial positions, with the exclusive presence of the ?-anomer. The crystal packing is stabilized by C-H?O and C-H?N hydrogen-bonding inter-actions.

| S-EPMC2915021 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data