Multicentered hydrogen bonding in 1-[(1-deoxy-β-D-fructopyranos-1-yl)azaniumyl]cyclopentanecarboxylate (`D-fructose-cycloleucine')
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Crystal structure and hydrogen bonding in N-(1-deoxy-β-d-fructopyranos-1-yl)-2-aminoisobutyric acid
The title compound, alternatively called d-fructose-2-amino-isobutyric acid (FruAib), C10H19NO7, (I), crystallizes exclusively in the β-pyran-ose form, with two conformationally non-equivalent mol-ecules [(IA) and (IB)] in the asymmetric unit. In solution, FruAib establishes an equilibrium, with 75.6% of the population consisting of β-pyran-ose, 10.4% β-furan-ose, 10.1% α-furan-ose, 3.0% α-pyra...
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The title compound C(23)H(29)NO(5), synthesized by the Amadori rearrangement of α-d-glucose with dibenzyl-amine and the ketalization, is shown to be a β-anomer. The fructopyran-ose ring adopts a chair conformation. The two benzene rings form a dihedral angle of 68.9 (1)°. In the crystal, non-classical inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into a three-dimensional network.
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Objectives This study aimed to assess PD-1gene polymorphism in salivary gland tumors in patients referred to Khalili Hospital in Shiraz. Methods This case-control study evaluated 48 patients with salivary gland tumors and 100 age- and sex-matched healthy controls. First, 5cc blood samples were obtained from patients and transferred to vials containing anti-coagulated EDTA. DNA was extracted, a...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Crystallographic Communications
سال: 2019
ISSN: 2056-9890
DOI: 10.1107/s2056989019009253