Experimental and in silico characterization of a biologically active inosose
作者:Venerando Pistarà、Giuseppe M. Lombardo、Antonio Rescifina、Alessia Bacchi、Felicia D’Andrea、Francesco Punzo
DOI:10.1007/s11224-013-0221-5
日期:2013.6
robust approach already tested by us in previous studies. A NMR analysis of the molecule in solution was also carried out, to compare the structural findings suggested by the X-ray analysis with the ones in solution and avoid confining them to the solid-state. In this framework, we investigated the above-mentioned inhibiting activity of a class of inososes, by means of a molecular docking investigation
最近有报道称肌醇显示出作为糖苷酶和淀粉样蛋白-β 蛋白抑制剂的生物活性。在收获适用于单晶 X 射线衍射的良好晶体后,我们根据使用适当的力场与性能最佳的充电方案相结合,与通过分子动力学模拟推断的数据进行了比较。这种方法允许将详细分析扩展到超精细细节,例如原子位移参数。它证实了我们在之前的研究中已经测试过的稳健方法的良好有效性。还对溶液中的分子进行了 NMR 分析,以将 X 射线分析表明的结构发现与溶液中的分子进行比较,并避免将它们限制在固态中。在这个框架中,
Double reductive amination of l-arabino-hexos-5-uloses: A diastereoselective approach to 1-deoxy-d-galactostatin derivatives
作者:Pier Luigi Barili、Giancarlo Berti、Giorgio Catelani、Felicia D'andrea、Francesco De Rensis、Leonardo Puccioni
DOI:10.1016/s0040-4020(97)00063-x
日期:1997.3
The double reductive amination of L-arabino-hexos-5-ulose with benzhydrylamine and NaBH3CN takes place in a diastereospecific manner giving in moderate chemical yield (36%) the galactosidase inhibitor 1-deoxy-D-galactostatin. The aminocyclization of 2,6-di-O-benzyl-L-arabino-hexos-5-ulose is more complicated giving results dependent from the type of amine: with ammonia or methylamine a mixture of C-5 epimeric 1-deoxyazapyranoses (D-galacto/L-altro ratio approximate to 4:1) is obtained in 45-65% combined yield, while with benzhydrylamine substantial amounts of an acyclic 1-deoxyl-benzydrylamino-hexitol (10% yield) is isolated together with the expected 1-deoxy-azasugars of the D-galacto and L-altro series. (C) 1997 Elsevier Science Ltd.