Reaction of Sugar Esters with Hydrogen Fluoride. IV. Isomerisation of Tetra-O-benzoyl-alpha-D-lyxopyranose.
نویسندگان
چکیده
منابع مشابه
Bis(N-benzoyl-N-phenylhydroxylaminato-κ2 O,O′)dimethyltin(IV)
The Sn atom in the title compound, [Sn(CH(3))(2)(C(13)H(10)NO(2))(2)], has a highly distorted octa-hedral coordination with the equatorial plane made up of four O atoms from two N-benzoyl-N-phenyl-hydroxy-laminate ligands and the axial positions occupied by two methyl groups. The crystal structure is stabilized by van der Waals inter-actions.
متن کامل2,3,4,6-Tetra-O-benzoyl-4-nitrophenyl-1-thio-α-d-mannopyranoside–dichloromethane–diethyl ether mixed solvate (1/0.53/0.38)
The title compound, C(40)H(31)NO(11)S·0.53CH(2)Cl(2)·0.38C(4)H(10)O, was synthesized in two steps from mannose penta-acetate and single crystals were grown by slow evaporation. The structure was determined by single-crystal X-ray diffraction, confirming the α-configuration of the anomeric thioaryl substituent. The asymmetric unit contains two crystallographically distinct mol-ecules of the carb...
متن کامل2,3,4,6-Tetra-O-acetyl-β-d-galactopyranosyl 2,3,4,6-tetra-O-acetyl-β-d-glucopyranosyl disulfide tetrahydrofuran solvate
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...
متن کامل3-O-Benzyl-6-O-benzoyl-1,2-O-isopropilidene-5-C-nitromethyl-a-d-glucofuranose
The title compound, C(24)H(27)NO(9), is one of the epimers of the Henry reaction of 3-O-benzyl-6-O-benzoyl-2-O-isopropyl-idene-a-d-glucofuran-5-one with nitro-methane. The conformation of the five membered rings is as expected from the precursor compound and the mol-ecule is folded with a dihedral angle of 51.4 (2)° between the aromatic rings. One O-H⋯O hydrogen bond and some intra-molecular an...
متن کامل4-(Dimethoxymethyl)phenyl 2,3,4,6-tetra-O-acetyl-β-d-glucopyranoside
The enanti-omerically pure title compound, C(23)H(30)O(12), crystallizes in the chiral space group P2(1)2(1)2(1). The O-acetyl-ated-glucopyran-oside moiety adopts a chair conformation. Numerous C-H⋯O inter-actions as well as a C-H⋯π inter-action are present in the crystal structure.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1964
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.18-0060