Platelet activating factor (PAF) antagonists: synthesis and structure-activity studies of novel PAF analogs modified in the phosphorylcholine moiety
作者:Muneo Takatani、Yoshio Yoshioka、Akihiro Tasaka、Zenichi Terashita、Yoshimi Imura、Kohei Nishikawa、Susumu Tsushima
DOI:10.1021/jm00121a012
日期:1989.1
New analogues of platelet activating factor (PAF), in which the phosphate and trimethylammonium moieties were replaced with an acylcarbamoyl moiety and a quaternary cyclic ammonium group, were synthesized. Their biological activities as PAF antagonists were evaluated by the inhibition of PAF-induced rabbit platelet aggregation in vitro and protective effects on PAF-induced hypotension in rats and PAF-induced
合成了血小板活化因子(PAF)的新类似物,其中磷酸和三甲基铵部分被酰基氨基甲酰基部分和季环铵基团取代。通过体外抑制PAF诱导的兔血小板聚集以及对PAF诱导的大鼠低血压和PAF诱导的小鼠死亡的保护作用,评估了它们作为PAF拮抗剂的生物学活性。结构活性关系的研究表明,PAF拮抗剂的活性受到氨基甲酰基上氮原子的酰基取代基和甘油主链3位上极性头基团性质的强烈影响。在测试的化合物中,氯化2-[[N-乙酰基-N-[[2-甲氧基-3-[(十八烷基氨基甲酰基)氧基]丙氧基]-羰基]氨基]甲基] -1-乙基吡啶鎓氯化物(21,CV-6209)是体外测定法中最有效的化合物之一(IC50 = 7.5 X 10(-8)M),也是体内测定法中最有效和最持久的化合物。还合成了(R)-(-)-21和(S)-(+)-21,在(RS)-之间未观察到PAF拮抗剂体外活性的显着差异以及对PAF诱导的体内低血压的抑制作用。 21及其对映体。