Synthesis and hydrolytic evaluation of acid-labile imine-linked cytotoxic isatin model systems
作者:Lidia Matesic、Julie M. Locke、Kara L. Vine、Marie Ranson、John B. Bremner、Danielle Skropeta
DOI:10.1016/j.bmc.2011.01.015
日期:2011.3
differing aromatic substituents and substitution patterns were synthesised and their acid-catalysed hydrolysis evaluated. These derivatives were functionalised at the C3 carbonyl group of a potent N-substituted isatin cytotoxin and were stable at physiological pH but readily cleaved at pH 4.5. Observed rates of hydrolysis for the embedded imine-acid moiety were in the order para-phenylpropionic acid > phenylacetic
在这项研究中,合成了一系列基于Isatin的,对pH敏感的芳基亚胺衍生物,它们具有不同的芳族取代基和取代方式,并评估了它们的酸催化水解作用。这些衍生物在有效的N-取代的靛红细胞毒素的C3羰基处官能化,并且在生理pH下稳定,但在pH 4.5下容易裂解。观察到的嵌入亚胺酸部分的水解速率为对-苯丙酸>苯乙酸(对 > 间)>苯甲酸(间 > 对对))。以这种方式微调水解速率的能力对于优化亚胺连接的,靶向肿瘤的细胞毒素-蛋白质结合物具有潜在的意义。