Crystal structure of(–)-[(1R)-3,5-d¡-O-benzylidene-D-glycero-D-gulo-1,4-heptanolactone, C14H16O7
نویسندگان
چکیده
منابع مشابه
1,5-Anhydro-3,6-di-O-benzyl-2-deoxy-1,2-C-dichloromethylene-d-glycero-d-gulo-hexitol
In the title compound, C(21)H(22)Cl(2)O(4), the pyranosyl ring adopts a twist-boat conformation with the O-benzyl groups in equatorial positions. In the crystal, O-H⋯O hydrogen bonding results in infinite chains of mol-ecules along [100]. The structure is further consolidated by weak C-H⋯O, C-H⋯Cl and C-H⋯π inter-actions. The absolute structure was determined.
متن کامل1,5-Anhydro-2-deoxy-1,2-C-dichloromethylene-3,4,6-tri-O-(4-methoxybenzyl)-d-glycero-d-gulo-hexitol
The pyranosyl ring in the title compound, C(31)H(34)Cl(2)O(7), adopts a twist-boat conformation. The 4-meth-oxy-benzyl groups are located in equatorial positions with the meth-oxy groups nearly coplanar with their respective rings [dihedral angles of 0.2 (3) and 9.4 (2)°]. The aromatic rings adopt orientations enabling them to participate in C-H⋯π inter-actions with neighboring meth-oxy groups....
متن کاملSynthesis of polyhydroxy amino acids based on D- and L-alanine from D-glycero-D-gulo-heptono-1,4-lactone.
2-Amino-2,3-dideoxy-D-manno-heptonic acid (7) has been synthesized from 2,5,6,7-tetra-O-acetyl-3-deoxy-D-gluco-heptono-1,4-lactone (1), which was readily prepared from D-glycero-D-gulo-heptono-1,4-lactone. O-Deacetylation of 1 followed by treatment with 13:1 (v/v) 2,2-dimethoxypropane/acetone in the presence of p-toluenesulfonic acid gave methyl 3-deoxy-4,5:6,7-di-O-isopropylidene-D-gluco-hepto...
متن کاملCrystal structure of potassium (1R)-d-ribit-1-ylsulfonate
The title compound, K(+)·C5H11O8S(-) [systematic name: potassium (1R,2R,3R,4R)-1,2,3,4,5-penta-hydroxy-pentane-1-sulfonate], formed by reaction of d-ribose with potassium hydrogen sulfite in water, crystallizes as colourless plates. The anion has an open-chain structure in which the S atom and the C atoms of the sugar chain, excepting that of the hy-droxy-methyl group, form an essentially all-t...
متن کاملCrystal structure of anhydrous d-D-mannitol
The crystal structure of anhydrous d-D-mannitol (C6H14O6) was solved from high-resolution synchrotron X-ray powder diffraction data collected on a mixture containing 20% and 80% w/w of band d-D-mannitol, respectively. The direct space simulated annealing program PSSP, and Rietveld analysis employing GSAS were used to determine and refine the structure. The polymorph has monoclinic symmetry, spa...
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ژورنال
عنوان ژورنال: Zeitschrift für Kristallographie - New Crystal Structures
سال: 1998
ISSN: 2197-4578,1433-7266
DOI: 10.1524/ncrs.1998.213.14.71