A series of benzoic acid derivatives was synthesized as VLA-4 antagonists. Introduction of chlorine or bromine into the 3-position on the central benzene of the diphenylurea portion as in lead compound 2 led to improvement in the pharmacokinetic properties. In particular, 12l demonstrated an acceptable plasma clearance and bioavailability in mice and rats as well as dogs (mice, CL=18.5 ml/min/kg,F=28%;
合成了一系列苯甲酸衍生物作为VLA-4拮抗剂。如铅化合物2中那样,将氯或溴引入到二苯基脲部分的中心苯的3-位上导致药代动力学性质的改善。特别地,12l在小鼠和大鼠以及狗中表现出可接受的血浆清除率和生物利用度(小鼠,CL = 18.5 ml / min / kg,F = 28%;大鼠,CL = 5.2 ml / min / kg,F = 36 %;狗,CL = 3.6ml / min / kg,F = 55%)。另外,在大鼠胸膜炎模型中,以10mg / kg的剂量口服给药时,12μl显示出有效的活性,IC50值为0.51nM,并且具有功效。