作者:Marili V.N. Rodrigues、Alexandre F. Barbosa、Júlia F. da Silva、Deborah A. dos Santos、Kenia L. Vanzolini、Marcela C. de Moraes、Arlene G. Corrêa、Quezia B. Cass
DOI:10.1016/j.bmc.2015.12.006
日期:2016.1
A novel potent xanthine oxidase inhibitor, 3-nitrobenzoyl 9-deazaguanine (LSPN451), was selected from a series of 10 synthetic derivatives. The enzymatic assays were carried out using an on-flow bidimensional liquid chromatography (2D LC) system, which allowed the screening, the measurement of the kinetic inhibition constant and the characterization of the inhibition mode. This compound showed a non-competitive inhibition mechanism with more affinity for the enzyme-substrate complex than for the free enzyme, and inhibition constant of 55.1 +/- 9.80 nM, about thirty times more potent than allopurinol. Further details of synthesis and enzymatic studies are presented herein. (c) 2015 Elsevier Ltd. All rights reserved.