Synthesis and biological evaluation of novel macrocyclic bis-7-azaindolylmaleimides as potent and highly selective glycogen synthase kinase-3β (GSK-3β) inhibitors
作者:Lan Shen、Catherine Prouty、Bruce R. Conway、Lori Westover、Jun Z. Xu、Richard A. Look、Xin Chen、Mary Pat Beavers、Jerry Roberts、William V. Murray、Keith T. Demarest、Gee-Hong Kuo
DOI:10.1016/j.bmc.2003.09.047
日期:2004.3
that resulted in the synthesis of novel series of macrocyclic bis-7-azaindolylmaleimides. Among the three series of macrocycles, the oxygen atom and thiophene containing linkers yielded molecules with higher inhibitory potency at GSK-3 beta (K(i)=0.011-0.079 microM) while the nitrogen atom containing linkers yielded molecules with lower potency (K(i)=0.150->1 microM). Compound 33 and 36 displayed 1-2
钯催化的交叉偶联反应用于合成两个关键中间体3和5,从而导致合成了一系列新的大环双7-氮杂吲哚基马来酰亚胺。在这三个系列的大环中,含氧原子和噻吩的连接子在GSK-3 beta处具有更高的抑制力(K(i)= 0.011-0.079 microM),而含氮原子的连接子则具有较低的抑制力(K( i)= 0.150-> 1 microM)。化合物33和36在GSK-3 beta对CDK2,PKC beta II,Rsk3表现出1-2个数量级的选择性,对其他62种蛋白激酶的抑制作用很小或没有抑制作用。与PKC beta II相比,化合物46对GSK-3 beta的选择性至少高100倍,并且对65种蛋白激酶几乎没有或没有活性,几乎表现为GSK-3 beta' 特异性抑制剂”。这三种化合物在GS测定中均显示出良好的效价。进行分子对接研究,以试图使氮杂吲哚基马来酰亚胺的GSK-3β选择性合理化。这些非冠醚型