Stereochemical Differences in Fluorocyclopropyl Amides Enable Tuning of Btk Inhibition and Off-Target Activity
作者:James J. Crawford、Wendy Lee、Adam R. Johnson、Kelly J. Delatorre、Jacob Chen、Charles Eigenbrot、Julia Heidmann、Satoko Kakiuchi-Kiyota、Arna Katewa、James R. Kiefer、Lichuan Liu、Joseph W. Lubach、Dinah Misner、Hans Purkey、Karin Reif、Jennifer Vogt、Harvey Wong、Christine Yu、Wendy B. Young
DOI:10.1021/acsmedchemlett.0c00249
日期:2020.8.13
Bruton’s tyrosine kinase (Btk) is thought to play a pathogenic role in chronic immune diseases such as rheumatoid arthritis and lupus. While covalent, irreversible Btk inhibitors are approved for treatment of hematologic malignancies, they are not approved for autoimmune indications. In efforts to develop additional series of reversible Btk inhibitors for chronic immune diseases, we sought to differentiate
布鲁顿酪氨酸激酶 (Btk) 被认为在慢性免疫疾病如类风湿性关节炎和狼疮中起致病作用。虽然共价的、不可逆的 Btk 抑制剂被批准用于治疗血液系统恶性肿瘤,但它们未被批准用于自身免疫适应症。在为慢性免疫疾病开发额外系列的可逆 Btk 抑制剂的努力中,我们试图通过使用 2-氨基吡啶基团的环丙基酰胺等排体占据平坦的亲脂性 H2 口袋来与我们的临床阶段抑制剂非布替尼区分开来。虽然保留了类似药物的特性——并且在某些情况下得到了改善——但观察到了以 hERG 抑制形式存在的安全隐患。当掺入氟环丙基酰胺时,发现 Btk 和脱靶活性是立体依赖性的,并以 (R , R )-立体异构体。