Synthesis and evaluation of novel fluorinated sulotroban-related sulfonamide derivatives as thromboxane A2 receptor antagonists
作者:M Sato、Y Kawashima、J Goto、Y Yamane、Y Chiba、S Jinno、M Satake、C Iwata
DOI:10.1016/0223-5234(96)88250-x
日期:1995.1
A series of sulotroban-related arylsulfonamide derivatives possessing a fluorinated phenoxyacetic acid moiety was synthesized and tested for TXA(2) antagonizing ability on U-46619-induced platelet aggregation of rabbit platelet-rich plasma. Introduction of one or more fluorine atoms to the phenoxyacetic acid moiety increased this activity. The most potent compound among these compounds was 10c, which was 40-fold more potent (IC50 3.4 x 10(-7) M) than sulotroban. 10c exhibited high activity (ID50, 0.14 mg/kg) against a U-46619-induced acute thrombocytopenia model in mice when orally administrated. These findings and those of radioligand binding assays with various ligands showed 10c to be a potent and selective systemic TXA, receptor antagonist.