Design, Synthesis, and Evaluation of Duocarmycin <i>O</i>-Amino Phenol Prodrugs Subject to Tunable Reductive Activation
作者:James P. Lajiness、William M. Robertson、Irene Dunwiddie、Melinda A. Broward、George A. Vielhauer、Scott J. Weir、Dale L. Boger
DOI:10.1021/jm1010397
日期:2010.11.11
prototypical members of a unique class of reductively activated (cleaved) prodrugs of the duocarmycin and CC-1065 family of antitumor agents. These prodrugs were designed to be potentially preferentially activated in hypoxic tumor environments which carry an intrinsically higher concentration of “reducing” nucleophiles (e.g., thiols) capable of activating such derivatives by nucleophilic cleavage of
seco -CBI-吲哚2的一系列N-酰基O-氨基衍生物作为独特类别的还原激活(裂解)前药的原型成员,duocarmycin 和 CC-1065 家族的抗肿瘤剂。这些前药被设计为在低氧肿瘤环境中潜在地优先被激活,这些环境携带固有更高浓度的“还原性”亲核试剂(例如硫醇),能够通过弱 N-O 键的亲核裂解来激活此类衍生物。观察到这些前药具有显着的稳定性范围以及由此产生的与体外/体内生物效力的直接相关性,甚至在弱 N-O 键周围的电子和空间环境中也产生了细微的变化。几种前药的体内评估表明,有些药物接近效力并超过游离药物本身(CBI-吲哚2 ),表明前药可能提供与受控或靶向释放相关的额外优势。