Aloisine A is a potent and selective CDK GSK-3 inhibitor. IC50 data of Aloisine A: Cdk1 cyclin B (IC50: 150nM), Cdk2 cyclin A (IC50: 120nM), Cdk2 cyclin E (IC50: 400nM), Cdk5 p25 (IC50: 200nM), Cdk5 p35 (IC50: 160nM), GSK-3α (IC50: 500nM), GSK-3β (IC50: 6