Improvement of water-solubility of biarylcarboxylic acid peroxisome proliferator-activated receptor (PPAR) δ-selective partial agonists by disruption of molecular planarity/symmetry
作者:Jun-ichi Kasuga、Minoru Ishikawa、Mitsuhiro Yonehara、Makoto Makishima、Yuichi Hashimoto、Hiroyuki Miyachi
DOI:10.1016/j.bmc.2010.08.041
日期:2010.10
disruption of molecular planarity and symmetry. All 2-substituted biphenyl analogs examined showed more potent PPARδ agonistic activity with greater aqueous solubility than 1 or 2. Among these biphenyls, 25 showed potent and selective PPARδ partial agonistic activity (EC50: 5.7 nM), with adequate solubility in phosphate buffer (0.022 mg/mL). The 2-substituted pyridyl analog 27 showed weaker PPARδ partial
为了阐明过氧化物酶体增殖物激活受体(PPAR)δ部分激动的分子基础,需要PPARδ配体结合位点与部分激动剂的复合物的X射线晶体结构。不幸的是,已报道的PPARδ部分激动剂联苯羧酸1和2具有不足的水溶性以致不能获得这种晶体。为了提高1和2的水溶性,在联芳基部分的2位引入取代基,重点是破坏分子平面性和对称性。检查的所有2-取代的联苯类似物均显示出比1或2更强的PPARδ激动活性和更大的水溶性。在这些联苯中,有25个显示出有效和选择性的PPARδ部分激动活性(EC 50:5.7 nM),并在磷酸盐缓冲液中具有足够的溶解度(0.022 mg / mL)。2-取代的吡啶基类似物27显示较弱PPARδ部分激动剂活性(EC 50:76纳米)与磷酸盐缓冲液的溶解性优异(2.7毫克/毫升;至少2700倍大于可溶性2)。我们的结果表明,两种改善水溶性的策略,即引入取代基以修饰二面角和破坏分子对称性,通常可适用