Differential effects of bromination on substrates and inhibitors of kynureninase from Pseudomonas fluorescens
作者:Christian Heiss、Jay Anderson、Robert S. Phillips
DOI:10.1039/b208910f
日期:2003.1.13
inhibitors of kynureninasefromPseudomonas fluorescens. Both 3-bromo-L-kynurenine and 5-bromo-L-kynurenine were found to be substrates with similar k(cat) values to L-kynurenine, but the K(m) value for 3-bromo-L-kynurenine is very high (ca. 2 mM) compared to that for 5-bromo-L-kynurenine (11 microM) and L-kynurenine (25 microM). Both isomers of bromokynurenine react with kynureninase within the dead
Synthesis and Biochemical Evaluation of <i>N</i>-(4-Phenylthiazol-2-yl)benzenesulfonamides as High-Affinity Inhibitors of Kynurenine 3-Hydroxylase
作者:Stephan Röver、Andrea M. Cesura、Philipp Huguenin、Rolf Kettler、Andre Szente
DOI:10.1021/jm970467t
日期:1997.12.1
we describe the synthesis, structure-activity relationship (SAR), and biochemical characterization of N-(4-phenylthiazol-2-yl)benzenesulfonamides as inhibitors of kynurenine 3-hydroxylase. The compounds 3,4-dimethoxy-N-[4-(3-nitrophenyl)thiazol-2-yl]benzenesulfonamide 16 (IC50 = 37 nM, Ro-61-8048) and 4-amino-N-[4-[2-fluoro-5-(trifluoromethyl)phenyl]-thiazol-2-yl] benzenesulfonamide 20 (IC50 = 19 nM)