Increasing metabolic stability via the deuterium kinetic isotope effect: An example from a proline-amide-urea aminothiazole series of phosphatidylinositol-3 kinase alpha inhibitors
作者:Robin A. Fairhurst、Giorgio Caravatti、Vito Guagnano、Reiner Aichholz、Joachim Blanz、Francesca Blasco、Peter Wipfli、Christine Fritsch、Sauveur-Michel Maira、Christian Schnell、Frank H. Seiler
DOI:10.1016/j.bmcl.2016.08.041
日期:2016.10
In vitro metabolic identification studies with a PI3K-α inhibitor lead molecule 1 identified a single predominant site of oxidative metabolism to be occurring within a tert.butyl moiety. Modification of the tert.butyl group within the lead molecule 1, to the corresponding d9-tert.butyl analogue 2, led to an increase in both the in vitro and in vivo metabolic stability. This increase in metabolic stability
用PI3K-α抑制剂前导分子1进行的体外代谢鉴定研究确定了氧化代谢的一个主要位点发生在叔丁基部分内。铅分子1中的叔丁基被修饰为相应的d9-叔丁基类似物2,导致体内和体外代谢稳定性均得到提高。与1相比,这种代谢稳定性的提高导致在大鼠中测得的口服生物利用度提高了2倍,而在小鼠的长期体内研究中,其口服生物利用度的提高了3倍。