Nineteen novel 4-indolyl-5-phenyl(indolyl)-1,2-dihydropyrazol-3-ones were synthesized and evaluated for
their GSK-3β inhibitory activity. Half of the tested compounds showed moderate GSK-3β inhibitory activity. Preliminary
structure-activity relationships were discussed, which showed that the presence of 3,4,5-trimethoxy group on the benezene
ring enhanced potency while the existence of an electron-withdrawing group at the 4-position of the benezene ring
deceased activity. Compounds 11c and 14, the most potent compounds with IC50 values of 9.28 and 8.98 μM,
respectively, would be promising candidates for further development of novel GSK-3β inhibitors.
Keywords: 4-Indolyl-5-phenyl(indolyl)-1, 2-dihydropyrazol-3-ones, Synthesis, GSK-3β inhibitors, metabolism, Staurosporine, biochemical properties, Mammalian GSK-3, pyrazolone ring, Val135
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