Synthesis and Neuropsychotropic Activity of Indole-Containing Gamma-Aminobutyric Acid Derivatives

series of indole-containing γ-aminobutyric acids (GABA) were synthesized via alkaline hydrolysis of 4-(indol-3-yl)-2-pyrrolidones. Their structures were confirmed by IR, PMR, and 13 C NMR spectroscopy. Studies of the pharmacological properties of 4-amino-3-indolylbutanoic acids (GABA derivatives) showed that they possessed neuropsychotropic activity, the spectrum of which depended on the acid molecular structure. Nootropic properties prevailed for 4-amino-3-(indol-3-yl)butanoic acid; anxiolytic activity, for 4-amino-3-(1-benzylindol-3-yl)butanoic acid.