PMID: 7519428Apr 1, 1994Paper

Synthesis and antithyroid activity of 1,4,5-trialkyl 2-thioimidazole derivatives

Il Farmaco
J FatimiC Raby

Abstract

A series of compounds based on the structure of MTI (1-methyl-2-thioimidazole) were synthesized by condensation of alpha-hydroxyketones and alkylthioureas. The alpha-hydroxyketones were obtained by a radical reaction in the presence of sodium and the alkyl ester, while the alkylthioureas were prepared by nucleophilic addition of ammonia on an alkylisothiocyanate. The antithyroid activity of the 13 compounds prepared was evaluated in vitro by determination of the concentrations which led to a 50% inhibition (IC50) of the activity of thyroid peroxidase, and in vivo by assay of thyroid hormones levels and histological examination of the thyroid gland in rats treated chronically with the compounds. 1-methyl-4,5-dipropyl 2-thioimidazole (compound 10) was found to have the highest antithyroid activity of the 13 compounds synthesized.

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