Synthesis and platelet aggregation inhibitory activity of diphenylazole derivatives. I. Thiazole and imidazole derivatives.
作者:Norihiko SEKO、Kohichiro YOSHINO、Koichi YOKOTA、Goro TSUKAMOTO
DOI:10.1248/cpb.39.651
日期:——
Diphenylimidazole and diphenylthiazole derivatives were synthesized and tested as inhibitors of platelet aggregation in in vitro experiments with the rabbit. Diphenylthiazole derivatives (10) were more potent than diphenylimidazole derivatives (4) in inhibiting arachidonic acid-induced platelet aggregation of rabbit platelet-rich plasma. Two diphenylimidazole and eight diphenylthiazole derivatives were evaluated for ex vivo arachidonic acid and collagen-induced platelet aggregation inhibitory activity using guinea pigs. In these compounds, 4, 5-bis(4-methoxyphenyl)-2-(1, 5-dimethyl-2-pyrrolyl)thiazole (10n) showed strong activity in vitro and ex vivo. The ex vivo activity of 10n was 200 times stronger than that of aspirin. The mechanism of the activity of 10n was the inhibition of cyclo-oxygenase.
合成了二苯基咪唑和二苯基噻唑衍生物,并在兔子的体外实验中将其作为血小板聚集抑制剂进行了测试。在抑制花生四烯酸诱导的兔子富血小板血浆血小板聚集方面,二苯基噻唑衍生物(10)比二苯基咪唑衍生物(4)更有效。用豚鼠评估了两种二苯基咪唑和八种二苯基噻唑衍生物对花生四烯酸和胶原蛋白诱导的血小板聚集的体内外抑制活性。在这些化合物中,4, 5-双(4-甲氧基苯基)-2-(1, 5-二甲基-2-吡咯基)噻唑(10n)在体外和体内均表现出很强的活性。10n 的体内外活性比阿司匹林强 200 倍。10n 的活性机制是抑制环氧化酶。