Synthesis of Novel Spiro(indolone-3,2 '-[1,3,4]thiadiazol)-2-ones and Evaluation of Their Antidepressant and Anticonvulsant Activities

[摘要]：The reaction of 3-(dicyanomethylene)-2-indolone in a solution of ethanol/piperidine with 4-substituted thiosemicarbazides forms the derivatives of 5'-(substituted amino)-3'H-spiro(indoline-3,2'-[1,3,4]thiadiazol-2-one. Rationales for these conversions involving the nucleophilic addition on the dicyanomethylene carbon atom are presented. The prepared compounds were evaluated each for antidepressant activity using tail suspension behavioral despair test and anticonvulsant activity against pentylenetetrazol induced seizures in mice.

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