Design of Enzymatically Cleavable Prodrugs of a Potent Platinum-Containing Anticancer Agent
作者:Song Ding、Amanda J. Pickard、Gregory L. Kucera、Ulrich Bierbach
DOI:10.1002/chem.201404675
日期:2014.12.1
approach, a new class of potential ester prodrugs of highly potent, but systemically too toxic, platinum–acridine anticancer agents was generated. The new hybrids contain a hydroxyl group, which has been masked with a cleavable lipophilic acyl moiety. Both butanoic (butyric) and bulkier 2‐propanepentanoic (valproic) esters were introduced. The goals of this design were to improve the drug‐like properties
使用一种通用的合成方法,产生了一类新的潜在酯类前药,它们是高效但全身毒性过大的铂-吖啶抗癌剂。新的杂化物含有一个羟基,它被一个可裂解的亲脂酰基部分掩盖。引入了丁酸(丁酸)和体积更大的 2-丙戊酸(丙戊酸)酯。该设计的目标是改善药物样特性(例如 log D) 并降低药效团的全身毒性。目标化合物进行有效酯水解的两种不同途径,即所提议的活化步骤,已得到证实:铂辅助、低氯化物环境中的自焚酯裂解(LC-ESMS、NMR 光谱)和人类酶促裂解羧酸酯酶-2 (hCES-2) (LC-ESMS)。丙戊酸酯衍生物是第一个可被前药转化酶切割的含金属试剂的例子。它们显示出优异的化学稳定性和降低的全身毒性。肺腺癌细胞系 (A549, NCI-H1435) 筛选的初步结果表明,丙戊酸酯的机制可能涉及细胞内去酯化。