Synthesis, bioconversion, pharmacokinetic and pharmacodynamic evaluation of N-isopropyl-oxy-carbonyloxymethyl prodrugs of CZh-226, a potent and selective PAK4 inhibitor
作者:Jing Guo、Tingting Wang、Tianxiao Wu、Kehan Zhang、Wenbo Yin、Mingyue Zhu、Yu Pang、Chenzhou Hao、Zhonggui He、Maosheng Cheng、Yang Liu、Jiang Zheng、Jingkai Gu、Dongmei Zhao
DOI:10.1016/j.ejmech.2019.111878
日期:2020.1
We have previously disclosed compound 3 (CZh-226), a potent and selective PAK4 inhibitor, but its development was delayed due to poor oral pharmacokinetics. In an attempt to improve this issue, we synthesised a series of prodrugs by masking its terminal nitrogen of the piperazine moiety. Most synthesised prodrugs of 3 have low or no inhibition of PAK4 activity. The stability of synthetic prodrugs was
我们之前已经披露了化合物3(CZh-226),一种有效的选择性PAK4抑制剂,但是由于不良的口服药代动力学,其开发被推迟了。为了改善这个问题,我们通过掩盖哌嗪部分的末端氮合成了一系列前药。大多数合成的3的前药对PAK4活性的抑制作用很小或没有。在PBS,SGF,SIF,大鼠血浆和肝S9级分中评估了合成前药的稳定性。其中,前药19不仅在酸性和中性条件下均稳定,而且可以在大鼠血浆和肝脏S9组分中迅速转化为母体药物3。在大鼠中观察到了这种有效转化为母体药物3的情况,与直接给药相比,其暴露量更高。当口服剂量为每日25和50 mg / kg时,