Design, synthesis, and biological evaluation of 1,2,5-oxadiazole-3-carboximidamide derivatives as novel indoleamine-2,3-dioxygenase 1 inhibitors
作者:Xiaohan Song、Pu Sun、Jiang Wang、Wei Guo、Yi Wang、Ling-hua Meng、Hong Liu
DOI:10.1016/j.ejmech.2020.112059
日期:2020.3
the shortcomings of epacadostat, structure-based drug design was performed to improve the pharmacokinetic profiles via changing the metabolic pathway of epacadostat and to enhance anti-tumor potency. A novel series of 1,2,5-oxadiazole-3-carboximidamide derivatives bearing cycle in the side chain were designed, synthesized, and biologically evaluated for their anti-tumor activity. Most of them exhibited
吲哚胺2,3-双加氧酶1(IDO1)是催化色氨酸氧化代谢的酶,可解释肿瘤微环境中的癌症免疫抑制作用。已经报道了几种靶向IDO1的化合物,依帕多司他显示出对IDO1的强抑制活性,这在临床研究中得到了进一步的研究。但是,其药代动力学特征并不令人满意。依帕卡司他的半衰期在人类中为2.4小时,在III期临床试验中剂量为50 mg BID。为了克服依帕克司他的缺点,进行了基于结构的药物设计,以通过改变依帕克司他的代谢途径来改善药代动力学并增强抗肿瘤效力。设计,合成了一系列在侧链具有循环的1,2,5-恶二唑-3-羧酰亚胺酰胺衍生物,并对它们的抗肿瘤活性进行生物学评估。它们中的大多数在酶促测定和过表达hIDO1的HEK293T细胞中均表现出针对hIDO1的有效活性。其中,化合物23、25和26对hIDO1(分别为IC50分别为108.7、178.1和139.1 nM)和表达hIDO1的HEK293T细胞(细胞IC50分别为19