Tetrasubstituted Imidazole Inhibitors of Cytokine Release: Probing Substituents in the N-1 Position
作者:Stefan A. Laufer、Werner Zimmermann、Kathrin J. Ruff
DOI:10.1021/jm0496584
日期:2004.12.1
We prepared novel 1,2,4,5-tetrasubstituted imidazole derivatives with high anti-inflammatory activity by using our previously described regiospecific synthesis. Systematic optimization of the imidazole N-1 substituent resulted in compound 9b that potently inhibited the mitogen-activated protein kinase p38 (p38 IC50 = 0.218 muM) as well as the release of the proinflammatory cytokines interleukin-1beta (IL-1beta) and tumor necrosis factor alpha. (TNFalpha) from human whole blood after stimulation with LPS. Furthermore, compound 9b exhibited reduced cytochrome P450 interaction in comparison with SB203580. This result is particularly important, since cytochrome P450 interaction is observed for some p38 inhibitors and in turn can potentially cause drug-drug interaction or lead to other hepatic changes such as P450 enzyme induction.
GOLUBEV, V. A.;RASHBA, YU. EH., IZV. AN CCCP. CEP. XIM., 1982, N 12, 2766-2772
作者:GOLUBEV, V. A.、RASHBA, YU. EH.
DOI:——
日期:——
Novel Substituted Pyridinyl Imidazoles as Potent Anticytokine Agents with Low Activity against Hepatic Cytochrome P450 Enzymes
作者:Stefan A. Laufer、Gerd K. Wagner、Dunja A. Kotschenreuther、W. Albrecht
DOI:10.1021/jm030766k
日期:2003.7.1
been linked to the liver toxicity observed for model p38 inhibitors, was very efficiently reduced through introduction of a tetramethylpiperidine substituent at the 1 position of the imidazole nucleus. Combination of both structural features provided 14c (p38: 0.34 microM, inhibition of CYP1A2 0%, 2C9 2.6%, 2C19 7.6% at 10 microM), which was selected for further development.