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Published on: January 3, 2018
Synthesis and antimicrobial screening of some novel thiazoles, dithiazoles and thiazolylpyridines
1Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Alexandria, Egypt.
Abstract:
Several thiazolines 2a-c, and 4-thiazolidinones 3a-c were synthesized through the reaction of the cyanoacetic acid hydrazide derivatives 1a-c with phenacyl bromides or chloroacetic acid, respectively. The dithiazoles 4a, b were obtained from 2a, b through their reaction with sulphur and phenyl isothiocyanate. The dithiazoles 6a, b were prepared from 4a through its reaction with dimethyl sulphate followed by reaction of the produced 2-methylthiothiazolium salt 5 with either malononitrile or ethyl cyanoacetate. The thiazolyl-pyridines 7a, b and 8a, b were obtained from 2a, b through their reaction with arylidene malonitrile and arylidene ethyl cyanoacetate, respectively. The prepared compounds were screened for their antibacterial and antifungal activities in vitro. Some of them showed weak effects.
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