Compounds of the formula:
where R₁ is amino or methyl; R₂ is C₁-C₂ alkyl; R₃ is one or more substituents selected from hydrogen, halogen or trihalomethyl; R₄ is one or more substituents selected from hydrogen, halogen, trihalomethyl, C₁ to C₄ alkoxy or C₁ to C₄ alkyl; and M is hydrogen, a pharmaceutically acceptable cation, aroyl, or C₁ to C₆ alkoyl are inhibitors of 5- and/or 12-lipoxygenase enzymes.
Structure−Activity Relationships of <i>N</i>-Hydroxyurea 5-Lipoxygenase Inhibitors
作者:Andrew O. Stewart、Pramila A. Bhatia、Jonathan G. Martin、James B. Summers、Karen E. Rodriques、Michael B. Martin、James H. Holms、Jimmie L. Moore、Richard A. Craig、Teodozyj Kolasa、James D. Ratajczyk、Hormoz Mazdiyasni、Francis A. J. Kerdesky、Shari L. DeNinno、Robert G. Maki、Jennifer B. Bouska、Patrick R. Young、Carmine Lanni、Randy L. Bell、George W. Carter、Clint D. W. Brooks
DOI:10.1021/jm9700474
日期:1997.6.1
The discovery of second generation N-hydroxyurea 5-lipoxygenase inhibitors was accomplished through the development of a broad structure-activity relationship (SAR) study. This study identified requirements for improving potency and also extending duration by limiting metabolism. Potency could be maintained by the incorporation of heterocyclic templates substituted with selected lipophilic substituents. Duration of inhibition after oral administration was optimized by identification of structural features in the proximity of the N-hydroxyurea which correlated to low in vitro glucuronidation rates. Furthermore, the rate of in vitro glucuronidation was shown to be stereoselective for certain analogs. (R)-N-[3-[5-(4-Fluorophenoxy)-2-furyl]-1-methyl-2-propynyl]-N-hy- droxyurea (17c) was identified and selected for clinical development.
Structure-activity analysis of a class of orally active hydroxamic acid inhibitors of leukotriene biosynthesis
作者:James B. Summers、Bruce P. Gunn、Jonathan G. Martin、Michael B. Martin、Hormoz Mazdiyasni、Andrew O. Stewart、Patrick R. Young、Jennifer B. Bouska、Andrew M. Goetze
DOI:10.1021/jm00118a016
日期:1988.10
in vivo leukotrienebiosynthesis inhibitory potency for a group of these hydroxamicacids were investigated. While most of the compounds examined were potent in vitro inhibitors of 5-lipoxygenase, their in vivo potencies varied widely. This discrepancy was usually attributable to differences in bioavailability. Substitution patterns are described that produce potent, orallyactiveinhibitors of leukotriene