Novel Antagonists of Platelet-Activating Factor. 1. Synthesis and Structure-Activity Relationships of Benzodiazepine and Benzazepine Derivatives of 2-Methyl-1-phenylimidazo[4,5-c]pyridine
作者:M. Jonathan Fray、Kelvin Cooper、M. John Parry、Kenneth Richardson、John Steele
DOI:10.1021/jm00018a011
日期:1995.9
Following the discovery of moderately potent antagonist activity platelet-activating factor (PAF) in 2-methyl-1-phenylimidazo[4,5-c]pyridine (2) (IC50 = 840 nM), 19 derivatives (3-21) were prepared which incorporated various lipophilic groups attached to the phenyl 4-position. Structure-activity relationships were evaluated where PAF antagonist activity was measured in vitro by determining the concentration
在发现2-甲基-1-苯基咪唑并[4,5-c]吡啶(2)(IC50 = 840 nM)中中等程度的拮抗活性血小板活化因子(PAF)之后,制备了19种衍生物(3-21)它结合了各种亲脂基团,这些亲脂基团连接在苯基的4-位上。通过确定抑制PAF诱导的兔洗血小板聚集所需的化合物(IC50)的浓度在体外测量PAF拮抗剂活性,并通过确定保护小鼠免于口服的口服剂量(ED50)在体内测量PAF拮抗剂活性,从而评估了结构-活性关系。致命注射PAF。[1,5]苯二氮卓类,例如14(2,3-二氢-1-甲基-4- [4-(2-甲基咪唑并[4,5-c]吡啶-1-基)苯基] -1H- [1 ,5]苯并二氮杂-2-酮)(IC50 = 4.9 nM,Ed50 = 0.03 mg / kg po),被发现具有与1,4-二氢吡啶PAF拮抗剂UK-74,505(1,4-(2-氯苯基)-1,4-二氢-3-(乙氧羰基)-6-甲基-2-