منابع مشابه
Crystal structure of β-d,l-fructose
The title compound, C6H12O6, was crystallized from an aqueous solution of equimolar mixture of d- and l-fructose (1,3,4,5,6-penta-hydroxy-hexan-2-one, arabino-hexulose or levu-lose), and it was confirmed that d-fructose (or l-fructose) formed β-pyran-ose with a (2) C 5 (or (5) C 2) conformation. In the crystal, two O-H⋯O hydrogen bonds between the hy-droxy groups at the C-1 and C-3 positions, a...
متن کاملCrystal structure of β-d,l-allose
The title compound, C6H12O6, a C-3 position epimer of glucose, was crystallized from an equimolar mixture of d- and l-allose. It was confirmed that d-allose (l-allose) formed β-pyran-ose with a (4) C 1 ((1) C 4) conformation in the crystal. In the crystal, molecules are linked by O-H⋯O hydrogen bond, forming a three-dimensional framework. The cell volume of the racemic β-d,l-allose is 739.36 (3...
متن کاملCrystal structure of β-d,l-psicose
The title compound, C6H12O6, a C-3 position epimer of fructose, was crystallized from an aqueous solution of equimolar mixture of d- and l-psicose (1,3,4,5,6-penta-hydroxy-hexan-2-one, ribo-2-hexulose, allulose), and it was confirmed that d-psicose (or l-psicose) formed β-pyran-ose with a (2) C 5 (or (5) C 2) conformation. In the crystal, an O-H⋯O hydrogen bond between the hy-droxy groups at th...
متن کاملValine sulfonamidecinnamic acid asymmetric crystal reactions.
Racemic and homochiral valine sulfonamidecinnamic acids crystallize with components aligned by use of the complementary features of hydrogen bonds and molecular topology to give supramolecular dimers. These discrete motifs effectively organize adjacent olefins for UV initiated single-crystal-to-single-crystal [2+2] photodimerization reactions. The racemic crystals produce inversion related cycl...
متن کاملCrystal Structure of a β-Catenin/Tcf Complex
phosphorylated b-catenin and targets it for degradation The Wnt signaling pathway plays critical roles in emby the proteosome. Active Wnt signaling inhibits the bryonic development and tumorigenesis. Stimulation phosphorylation of b-catenin by GSK-3b by a mostly of the Wnt pathway results in the accumulation of a unknown mechanism, thus preventing the degradation nuclear b-catenin/Tcf complex, ...
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ژورنال
عنوان ژورنال: Polymer Journal
سال: 1983
ISSN: 0032-3896,1349-0540
DOI: 10.1295/polymj.15.899