5-Acyl-6-aryl-4-nitro-3(2H)pyridazinones and Related 4-Amino Compounds: Synthesis and Pharmacological Evaluation
作者:Vittorio Dal Piaz、Giovanna Ciciani、Giovanni Turco、Maria Paola Giovannoni、Mauro Miceli、Renato Pirisino、Mauro Perretti
DOI:10.1002/jps.2600800412
日期:1991.4
Several 4-nitro- and 4-amino-5-acyl-6-aryl-3(2H)pyridazinones were prepared and their in vitro and ex vivo antiaggregatory properties were evaluated. 4-Nitro derivatives 3 generally showed good activity in vitro towards arachidonic acid (AA)-induced human blood platelet aggregation. The 4-amino compound 4a, which has weak in vitro activity, exhibited antiplatelet activity, particularly on adenosine
制备了几种4-硝基-和4-氨基-5-酰基-6-芳基-3(2H)哒嗪酮,并评估了它们的体外和离体抗聚集特性。4-硝基衍生物3通常在体外对花生四烯酸(AA)诱导的人类血小板聚集具有良好的活性。体外活性较弱的4-氨基化合物4a表现出抗血小板活性,尤其是对兔体内脱磷酸腺苷(ADP)诱导的聚集具有抑制作用。此外,显示出相同的化合物在血小板活化因子(PAF)诱导的大鼠爪痛觉过敏中具有活性,并具有较低的急性口服毒性。还发现口服给予大鼠的4-氨基衍生物4a-m和其他哒嗪酮5-9比乙酰水杨酸(ASA)更有效。化合物3a和4a 在脂多糖(LPS)刺激的大鼠腹膜巨噬细胞上进行了体外试验,结果显示该药物在抑制前列腺素E2(PGE2)的产生和白介素1活性方面具有活性。在一系列抗聚集的哒嗪酮3中的结构活性关系研究表明,分别在位置4和5处的硝基和乙酰基取代基至关重要。为了更好的活性,还需要位置2的疏水取代基。