Selective IKur Inhibitors for the Potential Treatment of Atrial Fibrillation: Optimization of the Phenyl Quinazoline Series Leading to Clinical Candidate 5-[5-Phenyl-4-(pyridin-2-ylmethylamino)quinazolin-2-yl]pyridine-3-sulfonamide
摘要:
We have recently disclosed 5-phenyl-N-(pyridin-2-ylmethyl)-2-(pyrimidin-5-yl)quinazolin-4-amine 1 as a potent I-Kur current blocker with selectivity versus hERG, Na and Ca channels, and an acceptable preclinical PK profile. Upon further characterization in vivo, compound 1 demonstrated an unacceptable level of brain penetration. In an effort to reduce the level of brain penetration while maintaining the overall profile, SAR was developed at the C2' position for a series of close analogues by employing hydrogen bond donors. As a result, 5-[5-phenyl-4-(pyridin-2-ylmethylamino)quinazolin-2-yl]pyridine-3-sulfonamide (25) was identified as the lead compound in this series. Compound 25 showed robust effects in rabbit and canine pharmacodynamic models and an acceptable cross-species pharmacokinetic profile and was advanced as the clinical candidate. Further optimization of 25 to mitigate pH-dependent absorption resulted in identification of the corresponding phosphoramide prodrug (29) with an improved solubility and pharmacokinetic profile.
[EN] QUINAZOLINES AS POTASSIUM ION CHANNEL INHIBITORS<br/>[FR] QUINAZOLINES COMME INHIBITEURS DES CANAUX IONIQUES POTASSIQUES
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2011028741A1
公开(公告)日:2011-03-10
A compound of formula (I) wherein A, X, Y, Z, R1 and R24 are described herein. The compounds are useful as inhibitors of potassium channel function and in the treatment and prevention of arrhythmia, IKur-associated disorders, and other disorders mediated by ion channel function.
A compound of formula I
wherein A, X, Y, Z, R
1
and R
24
are described herein. The compounds are useful as inhibitors of potassium channel function and in the treatment and prevention of arrhythmia, I
Kur
-associated disorders, and other disorders mediated by ion channel function.
A compound of formula I
wherein A, X, Y, Z, R1 and R24 are described herein. The compounds are useful as inhibitors of potassium channel function and in the treatment and prevention of arrhythmia, IKur-associated disorders, and other disorders mediated by ion channel function.
式 I 的化合物
其中 A、X、Y、Z、R1 和 R24 如本文所述。这些化合物可作为钾离子通道功能的抑制剂,用于治疗和预防心律失常、IKur 相关性疾病和其他由离子通道功能介导的疾病。