Inhibitors of blood platelet cAMP phosphodiesterase. 4. Structural variation of the side-chain terminus of water-soluble 1,3-dihydro-2H-imidazo[4,5-b]quinolin-2-one derivatives
作者:Nicholas A. Meanwell、Piyasena Hewawasam、Jeanine A. Thomas、J. J. Kim Wright、John W. Russell、Marianne Gamberdella、Harold J. Goldenberg、Steven M. Seiler、George B. Zavoico
DOI:10.1021/jm00074a005
日期:1993.10
effectively combined potent inhibition of ADP-induced human platelet aggregation in vitro with excellent aqueous solubility, and several are superior to 2. Within each series, the N-(cyclohexylmethyl)-, N-(2-ethylbutyl)-, N-benzyl-, and N-(4-fluorobenzyl)-substituted derivatives were evaluated for in vitro metabolic stability by incubating with the S-9 fraction of monkey liver for 2 h, and the extent of
1-(环己基甲基)-4- [4-[(2,3-二氢-2-氧代-1H-咪唑并[4,5-b]喹啉-7-基)氧基] -1-氧丁基]哌嗪(2)以前被鉴定为是人血小板cAMP磷酸二酯酶和体外诱导聚集的有效水溶性抑制剂,在血栓形成动物模型中显示出有效的抗血栓形成活性。尽管2在大鼠中表现出25%的口服生物利用度,但在猴子中进行的药代动力学研究表明,母体化合物的生物利用度低于5%,这是肝脏中广泛的首过生物转化的结果。为了鉴定具有增强的代谢稳定性的有效血小板凝集抑制剂,将2的侧链酰胺部分替换为化学上更稳定的尿素(6a-s),磺酰胺(13a-m),砜(19a-r)和四唑(23a-s)部分。来自每种结构类型的许多代表在体外以优异的水溶性有效地有效抑制了ADP诱导的人血小板凝集,其中一些优于2。在每个系列中,N-(环己基甲基)-,N-(2-通过与猴肝的S-9级分温育2小时来评估乙基丁基)-,N-苄基-和N-(4-氟