Interactions of calcium ions with carbohydrates. The crystal structure of calcium D-glycero-D-gulo-heptonate tetrahydrate.
スポンサーリンク
概要
- 論文の詳細を見る
The crystal structure of the calcium salt of D-glycero-D-gulo-heptonic acid has been determined by the X-ray method. The crystal is monoclinic of space group P2<SUB>1</SUB> with unit-cell dimensions of <I>a</I>=10.064(1), <I>b</I>=10.540(2), <I>c</I>=11.340(2) Å, and β=108.92(1)°. The intensity data for 1754 unique reflections were measured with an automatic diffractometer. A trial structure, obtained by the direct method, was refined by the full-matrix least-squares method to <I>R</I>=0.030. The two independent heptonate anions have different conformations, and they chelate a calcium ion in different ways. The calcium ion is surrounded by eight oxygen atoms in a deformed dodecahedral form, the Ca···O distances ranging from 2.40 Å to 2.48 Å. The distortion of the moleular strcuture of the heptonate anions due to the calcium chelation was discussed in relation to the calcium-binding sites on a linear carbohydrate chain.
- 公益社団法人 日本化学会の論文
著者
-
OSAKI Kenji
Faculty of Pharmaceutical Science, Kyoto University
-
Taga Tooru
Faculty Of Pharmaceutical Science Kyoto University
-
Kaji Taneno
Faculty of Pharmaceutical Sciences, Kyoto University
関連論文
- Serotonin 5-HT_4 Receptor Agonistic Activity of the Optical Isomers of (±)-4-Amino-N-[2-(1-azabicyclo[3.3.0]octan-5-yl)ethyl]-5-chloro-2,3-dihydro-2-methylbenzo[b]furan-7-carboxamide
- Isolation and Structures of AK-Toxin I and II, Host-specific Phytotoxic Metabolites Produced by Alternaria alternata Japanese Pear Pathotype
- The Crystal Structures of Magnesium Formate Dihydrate and Manganous Formate Dihydrate
- The Crystal Structure of Monoclinic Formate Dihydrates
- PB49 A NEW STEREOSELECTIVE SYNTHESIS OF (20S)-AND (20R)-STEROIDAL SIDE CHAINS
- Molecular Conformation of Tetragastrin in Aqueous Solution by the Monte-Carlo Simulation
- Monte-Carlo Simulation of Cyclic Peptide Containing a Disulfide Bond
- Crystal Structure of (-)-7-[(7S)-7-Amino-5-azaspiro[2.4]hept-5-yl]-8-chloro-6-fluoro-1-[(1R, 2S)-2-fluorocyclopropyl]-1, 4-dihydro-4-oxo-3-quinolinecarboxylic Acid (Sitafloxacin) Sesquihydrate
- Tetravalent ruthenium porphyrin. II. The molecular and crystal structure of .MU.-oxo-bis((octaethylporphinato)ruthenium(IV) chloride) benzene solvate.
- The crystal and molecular structure of quadrivalent osmium porphyrin; .MU.-Oxo-bis(methoxo(octaethylporphinato)osmium(IV)).
- The crystal and molecular structure of diaqua(tetraphenylporphinato)-cobalt(III) perchlorate.
- A molybdenum polynuclear complex as small metallic particles.
- The crystal and molecular structure of six-coordinate intermediate-spin porphinatoiron(III) complex. (Octaethylporphinato)bis(tetrahydrofuran)iron(III) perchlorate.
- Interactions of calcium ions with carbohydrates: Crystal structure of calcium dl-glycerate dihydrate.
- Structures of lanthanoid complexes of glyceric acid, gluconic acid, and lactobionic acid from the lanthanoid-induced 1H NMR shifts: pH dependence of the lanthanoid-substrate equilibria.
- Interactions of calcium ions with carbohydrates: Crystal structure of calcium D-glucarate tetrahydrate.
- The crystal structure of the 1:2 tetrapropylammonium guanidinium bromide complex.
- Cation distribution in mixed formates. I. Change in lattice constants and in infrared spectra with the chemical constitution of (Cu,MII)(HCOO)2 2H2O.
- The Crystal and Molecular Structure of Bis(o-ethoxyphenyl)butadiyne
- Cation distribution in mixed formates. II. The structure of the mixed crystal Cu0.5Zn0.5(HCOO)2 2H2O.
- Interactions of calcium ions with carbohydrates. The crystal structure of calcium D-glycero-D-gulo-heptonate tetrahydrate.
- Interactions of calcium ions with carbohydrates: X-ray diffraction and NMR spectroscopic studies on the potassium salt and the calcium salt of D-glucaric acid.