Discovery of 4′-Chloromethyl-2′-deoxy-3′,5′-di-<i>O</i>-isobutyryl-2′-fluorocytidine (ALS-8176), A First-in-Class RSV Polymerase Inhibitor for Treatment of Human Respiratory Syncytial Virus Infection
作者:Guangyi Wang、Jerome Deval、Jin Hong、Natalia Dyatkina、Marija Prhavc、Joshua Taylor、Amy Fung、Zhinan Jin、Sarah K. Stevens、Vladimir Serebryany、Jyanwei Liu、Qingling Zhang、Yuen Tam、Sushmita M. Chanda、David B. Smith、Julian A. Symons、Lawrence M. Blatt、Leo Beigelman
DOI:10.1021/jm5017279
日期:2015.2.26
Clearly, there is an urgent need for small molecule RSV drugs. This article reports the design, synthesis, anti-RSV activity, metabolism, and pharmacokinetics of a series of 4′-substituted cytidine nucleosides. Among tested compounds 4′-chloromethyl-2′-deoxy-2′-fluorocytidine (2c) exhibited the most promising activity in the RSV replicon assay with an EC50 of 0.15 μM. The 5′-triphosphate of 2c (2c-TP)
呼吸道合胞病毒(RSV)是儿童期的主要病原体,与明显的发病率和死亡率有关。迄今为止,利巴韦林是唯一获准使用的小分子药物,用途有限。唯一的其他RSV药物是帕利珠单抗(palivizumab),一种单克隆抗体,可用于RSV预防。显然,迫切需要小分子RSV药物。本文报道了一系列4'-取代胞苷核苷的设计,合成,抗RSV活性,代谢和药代动力学。在测试的化合物中,4'-氯甲基-2'-脱氧-2'-氟胞苷(2c)在RSV复制子测定中表现出最有希望的活性,EC 50为0.15μM。2c(2c - TP的5'-三磷酸)抑制RSV聚合酶的IC 50为0.02μM,而对100μM的人DNA和RNA聚合酶没有明显的抑制作用。ALS-8176(71)是2c的3',5'-二-O-异丁酰基前药,在体内具有良好的口服生物利用度和2c - TP高水平。化合物71是一流的核苷RSV聚合酶抑制剂,在2期临床RSV攻击研究中显示出优异的抗RSV功效和安全性。