Substituted 3-imidazo[1,2-a]pyridin-3-yl- 4-(1,2,3,4-tetrahydro-[1,4]diazepino-[6,7,1-hi]indol-7-yl)pyrrole-2,5-diones as highly selective and potent inhibitors of glycogen synthase kinase-3. - Engler TA; Henry JR; Malhotra S; Cunningham B; Furness K; Brozinick J; Burkholder TP; Clay MP; Clayton J; Diefenbacher C; Hawkins E; Iversen PW; et al. (Journal of medicinal chemistry, 2004)