2,4-Diaminoquinazolines as Dual Toll-like Receptor (TLR) 7/8 Modulators for the Treatment of Hepatitis B Virus
作者:Werner Embrechts、Florence Herschke、Frederik Pauwels、Bart Stoops、Stefaan Last、Serge Pieters、Vineet Pande、Geert Pille、Katie Amssoms、Ilham Smyej、Deborah Dhuyvetter、Annick Scholliers、Wendy Mostmans、Kris Van Dijck、Bertrand Van Schoubroeck、Tine Thone、Dorien De Pooter、Gregory Fanning、Tim H. M. Jonckers、Helen Horton、Pierre Raboisson、David McGowan
DOI:10.1021/acs.jmedchem.8b00643
日期:2018.7.26
off-target activity. The stereochemistry of the amino alcohol was found to influence the TLR7/8 selectivity with the (R) isomer resulting in selective TLR8 agonism. Lead optimization toward a dual agonist afforded (S)-3-((2-amino-8-fluoroquinazolin-4-yl)amino)hexanol 31 as a potent analog, being structurally different from previously described dual agonists (McGowan J. Med. Chem. 2016, 59, 7936). Pharmacokinetic
一系列新的2,4-二氨基喹唑啉被确定为有效的双重Toll样受体(TLR)7和8激动剂,具有降低脱靶活性。发现氨基醇的立体化学会影响具有(R)异构体的TLR7 / 8选择性,从而导致选择性TLR8激动作用。对双激动剂的前导优化提供了作为有效类似物的(S)-3-((2-氨基-8-氟喹唑啉-4-基)氨基)己醇31作为有效类似物,其结构与先前描述的双激动剂(麦高文 J. Med。化学 2016, 59,7936)。药代动力学和药效学(PK / PD)研究表明,所需的高首过谱旨在限制全身细胞因子的激活。用先导化合物31进行的体内药效学研究表明,与小鼠和食蟹猴中的TLR7 / 8激活相一致的细胞因子的产生以及对乙型肝炎病毒(HBV)的离体抑制。