/交换用于评估含甲的酸性化合物中性稳定性
Zaikuan Josh Yu1, Cristobal Morfin1, Thomas Paul2
1Department of Drug Metabolism and Pharmacokinetics, Gilead Sciences, Inc., Foster City, California 94404, United States.
酸性化合物,如谷氨胺和 thiazolidinediones 可以 racemize,影响药物特性. 化增强了性稳定性,而PROTACs表现出比分子粘剂更大的稳定性.
科学领域:
- 药用化学 医学化学
- 化学动力学 化学动力学
- 药物发现 药物发现 药物发现
背景情况:
- 含有酸性甲的化合物,包括利胺和 thiazolidinedione 支架,容易通过醇复合体化进行种族化.
- 这种不稳定性会改变候选药物的药理和毒理特征.
研究的目的:
- 开发和应用H/D交换方法来评估种族化和表皮化动力学.
- 为了评估基于谷氨胺的分子粘剂,蛋白质溶解向嵌合体 (PROTACs) 和 thiazolidinediones 的奇拉稳定性.
主要方法:
- 在37°C的D2O酸盐缓冲体 (pD 7.8) 中利用H/D交换来测量种族化半衰期.
- 经验证的H/D汇率与拉超临界流体染色学.
- 通过动态同位素效应研究了化 (反向D/H交换) 对性稳定性的影响.
主要成果:
- 基于谷氨胺的分子剂的种族化半衰期为3.07.3小时; thiazolidinediones更快 (0.81.0小时).
- 甲脱化合物显示了3.6至8.5倍的改善性稳定性.
- 一般来说,PROTACs比分子粘剂具有更大的奇拉稳定性;人类血清白蛋白具有可变的效果.
结论:
- H/D 交换方法提供了一种强大而精简的方法来评估性稳定性.
- 化是一种可行的策略,可以增强治疗剂的性稳定性.
- 在PROTACs和分子粘剂之间观察到明显的合性行为,这需要进一步调查PROTAC的构造和稳定性.
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