C(4)-alkyl substituted furanyl cyclobutenediones as potent, orally bioavailable CXCR2 and CXCR1 receptor antagonists
摘要:
A novel series of cyclobutenedione centered C(4)-alkyl substituted furanyl analogs was developed as potent CXCR2 and CXCR1 antagonists. Compound 16 exhibits potent inhibitory activities against IL-8 binding to the receptors (CXCR2 Ki = 1 nM, IC50 = 1.3 nM; CXCRI Ki = 3 nM, IC50= 7.3 nM), and demonstrates potent inhibition against both Gro-alpha and IL-8 induced hPMN migration (chemotaxis: CXCR2 IC50=0.5nM,CXCRI IC50= 37 nN1). In addition, 16 has shown good oral pharmacokinetic profiles in rat, mouse, monkey, and dog. (c) 2007 Elsevier Ltd. All rights reserved.
Novel nucleophile-dependent cine-substitution in α-nitrofurans
作者:Bradley J. Barnes、Peter J. Newcombe、Robert K. Norris、Karen Wilson
DOI:10.1039/c39850001408
日期:——
α-Nitrofurans bearing acyl or alkoxycarbonyl groups on the α′-Position undergo cine-substitution of the α-nitro group when treated with the anions of secondary nitroalkanes, whereas with other nucleophiles, normal substitution of the α-nitro group occurs.