Stepwise Design of γ-Secretase Modulators with an Advanced Profile by Judicious Coordinated Structural Replacements and an Unconventional Phenyl Ring Bioisostere
作者:Rosa María Rodríguez Sarmiento、Caterina Bissantz、Johan Bylund、Anja Limberg、Werner Neidhart、Roland Jakob-Roetne、Lisha Wang、Karlheinz Baumann
DOI:10.1021/acs.jmedchem.0c00909
日期:2020.8.13
modulator (GSM) lead compound, we utilized sequential structural replacements to improve the potency (IC50), pharmacokinetic properties including the free fraction (fraction unbound (fu)) in plasma, and in vivo efficacy. Importantly, we used novel CF3-alkoxy groups as bioisosteric replacements of a fluorinated phenyl ring and properties such as lipophilicity, solubility, metabolic stability, and free
从我们以前的γ-分泌酶调节剂(GSM)铅化合物RO6800020(1)开始,我们利用顺序结构置换来提高效能(IC 50),药代动力学特性,包括血浆中的游离级分(未结合分数(fu))和体内功效。重要的是,我们使用了新型CF 3-烷氧基可作为氟化苯环的生物等位替代物,并具有诸如亲脂性,溶解性,代谢稳定性和游离级分之类的特性,可以保持CNS渗透所需的低Pgp外排。另外,通过降低芳香性,我们防止了光毒性。三唑并吡啶核中的其他取代干扰了与磷脂酰肌醇4-激酶催化β(PIK4CB)的结合。我们还介绍了较少的不具有共价结合(CVB)责任的亲脂性头部杂环。在这些改变之后,对三氟乙氧基生物等位取代的进一步修饰使得性质如亲脂性以及效力重新平衡。我们的优化策略以体内活性RO7101556(18B)具有优异的性能,并被选为高级候选人。