Synthesis and Preliminary Evaluation of N-Oxide Derivatives for the Prevention of Atherothrombotic Events
作者:Leandro Rosseto、Maria Pires、Aylime Melchior、Priscila Bosquesi、Aline Pavan、Sisi Marcondes、Man Chung、Jean Santos
DOI:10.3390/molecules201018185
日期:——
Thrombosis is the main outcome of many cardiovascular diseases. Current treatments to prevent thrombotic events involve the long-term use of antiplatelet drugs. However, this therapy has several limitations, thereby justifying the development of new drugs. A series of N-oxide derivatives (furoxan and benzofuroxan) were synthesized and characterized as potential antiplatelet/antithrombotic compounds. All compounds (3a,b, 4a,b, 8a,b, 9a,b, 13a,b and 14a,b) inhibited platelet aggregation induced by adenosine-5-diphosphate, collagen, and arachidonic acid. All compounds protected mice from pulmonary thromboembolism induced by a mixture of collagen and epinephrine; however, benzofuroxan derivatives (13a,b and 14a,b) were the most active compounds, reducing thromboembolic events by up to 80%. N-oxide derivative 14a did not induce genotoxicity in vivo. In conclusion, 14a has emerged as a new antiplatelet/antithrombotic prototype useful for the prevention of atherothrombotic events.
血栓形成是许多心血管疾病的主要结局。目前用于预防血栓形成事件的治疗方法涉及长期使用抗血小板药物。然而,这种疗法存在若干局限性,因此有必要开发新药物。一系列 N-氧化物衍生物(呋喃并氧化物和苯并呋喃并氧化物)被合成并表征为潜在的抗血小板/抗血栓化合物。所有化合物(3a,b, 4a,b, 8a,b, 9a,b, 13a,b 和 14a,b)均抑制由二磷酸腺苷、胶原和花生四烯酸诱导的血小板聚集。所有化合物均能保护小鼠免受由胶原和肾上腺素混合物诱导的肺血栓栓塞;然而,苯并呋喃并氧化物衍生物(13a,b 和 14a,b)是活性最高的化合物,能将血栓栓塞事件减少高达 80%。N-氧化物衍生物 14a 在体内未诱导基因毒性。总之,14a 已成为一种新的抗血小板/抗血栓原型,对预防动脉粥样血栓形成事件具有重要意义。