在超越5规则空间中平衡脂性和透性的设计原则
1Computer-Aided Drug Design, Global Discovery Chemistry, Novartis BioMedical Research, 4002, Basel, Switzerland.
ChemMedChem
|November 21, 2023
概括
口服药物的新设计原则超出了规则5 (bRo5) 规则的药物平衡脂性和透性. 这些原则,包括拓极地表面积 (TPSA) /分子量 (MW) 范围和3D PSA,提高bRo5药物发现的口服生物可用性.
科学领域:
- 药用化学 医学化学
- 药物发现 药物发现 药物发现
- 计算化学的计算化学
背景情况:
- 规则5 (Ro5) 提供了口服生物利用性的指导方针,但许多成功的药物超出了这些标准 (超出Ro5或bRo5).
- 了解赋予bRo5药物的口服生物可用性的物理化学性质对于扩大药物设计可能性至关重要.
研究的目的:
- 通过分析形状性质,透性和脂友性来推导口服bRo5药物的设计原则.
- 为关键的物理化学参数建立定量值,以预测bRo5化合物的口服生物可用性.
主要方法:
- 对口服bRo5药物进行了初始形状分析.
- 分析补充了测量的透性和logP (八醇) 数据.
- 计算的拓极地表面积 (TPSA) 和3D极地表面积 (PSA).
主要成果:
- 口服bRo5药物的3D PSA值与Ro5药物的值保持一致.
- 大多数口服bRo5药物超过了Ro5 logP值,这表明重点是透性.
- 一个特定的TPSA/MW范围 (0.1-0.3 Å2/Da) 和3D PSA < 100 Å2定义了"约1/5的规则"来平衡500Da以上药物的脂性和透性.
- 中性TPSA是一种内在特性,在新型bRo5药物的优化过程中增加.
结论:
- "约1/5的规则"为设计口服生物可用bRo5药物提供了一个框架.
- 中性TPSA是优化bRo5候选药物的一个有价值的参数.
- 这些发现为扩大口服药物的化学空间提供了实际的设计原则.
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