A series of novel maleimide-based inhibitors of protein kinase C (PKC) were designed, synthesized, and evaluated. AEB071 (1) was found to be a potent, selective inhibitor of classical and novel PKC isotypes. 1 is a highly efficient immunomodulator, acting via inhibition of early T cell activation. The binding mode of maleimides to PKCs, proposed by molecular modeling, was confirmed by X-ray analysis of 1 bound in the active site of PKCα.

中文翻译：

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3-（1 H-吲哚-3-基）-4- [2-（4-甲基哌嗪-1-基）喹唑啉-4-基]吡咯-2,5-二酮（AEB071）的发现蛋白激酶C同种型抑制剂

设计，合成和评估了一系列新型的基于马来酰亚胺的蛋白激酶C（PKC）抑制剂。发现AEB071（1）是经典和新型PKC同种型的有效选择性抑制剂。图1是高效的免疫调节剂，其通过抑制早期T细胞活化而起作用。通过分子建模提出的马来酰亚胺与PKCs的结合模式，通过对PKCα活性位点中结合的1个X射线分析进行了证实。