Synthesis and biological activity of thieno[3,2-d]pyrimidines as potent JAK3 inhibitors for the treatment of idiopathic pulmonary fibrosis
作者:Yanming Zhu、Xu Zheng、Changyuan Wang、Xiuli Sun、Huijun Sun、Tengyue Ma、Yanxia Li、Kexin Liu、Lixue Chen、Xiaodong Ma
DOI:10.1016/j.bmc.2019.115254
日期:2020.1
with a median survival of only 3-5 years from diagnosis. Janus kinase 3 (JAK3) has a well-established role in the pathogenesis of various autoimmune diseases, including rheumatoid arthritis (RA) and autoimmune-related pulmonary fibrosis. In this study, through the use of a conformationally-constrained design strategy, a series of thieno[3,2-d]pyrimidines were synthesized as potent JAK3 inhibitors
特发性肺纤维化(IPF)是一种严重且致命的肺部疾病,诊断后中位生存期仅为3-5年。Janus激酶3(JAK3)在各种自体免疫疾病(包括类风湿性关节炎(RA)和自体免疫相关的肺纤维化)的发病机理中具有公认的作用。在这项研究中,通过使用构象受限的设计策略,合成了一系列噻吩并[3,2-d]嘧啶类化合物作为有效的JAK3抑制剂,用于治疗IPF。其中,最有效的JAK3抑制剂8e(IC50 = 1.38 nM)根据苏木精-伊红(HE)染色法对博来霉素(BLM)诱导的肺纤维化的肺组织染色显着降低了气囊炎和纤维化程度鼠标模型。通过测定Masson和羟脯氨酸(HYP)含量可以明显减少肺胶原沉积,也证明了其在治疗纤维化中的功效。此外,8e还降低了肺组织中炎性标记物IL-6,IL-17A,TNF-α和丙二醛(MDA)的表达,这表明其抗炎活性比参考药物(nintedanib和吉非替尼)。此外,它对正常人支气管上皮细胞(HBE)(IC50>