Regioselective synthesis of 2-[(E)-(benzo[d]thiazol-2(3H)-ylidene)(cyano)methyl]thiazoles
摘要:
Cyclocondensation of 2-[bis(methylthio)methylene]malononitrile and 2-amino-benzenthiol afforded 2-(benzo[d]thiazol-2-yl) malononitrile. This compound, on treatment with phosphorus pentasulfide, gave the corresponding thioamide derivative in a regioselective manner. Reaction of this compound with several alpha-bromocarbonyl compounds gave new 2-[(E)-(benzo[d]thiazol-2(3H)-ylidene)(cyano)methyl]thiazoles.
A Rich Array of Reactions of Cyanomonothiocarbonylmalonamides RNHCSCH(CN)CONHR‘ and Their Thioenols RNHC(SH)C(CN)CONHR‘<sup>1</sup>
作者:Ahmad Basheer、Zvi Rappoport
DOI:10.1021/jo7022262
日期:2008.2.1
The thioenols derived from cyanomonothiocarbonylmalonamides and a cyanodithiocarbonylmalonamide were found to be very reactive species. They react under a variety of conditions such as crystallization, reaction with several carbonyl compounds, and reactions with another thioenol molecule to give a variety of products, mostly heterocycles, including substituted 2,3-dihydroisothiazole-3-ones and 3-thione
Cyclocondensation of 2-[bis(methylthio)methylene]malononitrile and 2-amino-benzenthiol afforded 2-(benzo[d]thiazol-2-yl) malononitrile. This compound, on treatment with phosphorus pentasulfide, gave the corresponding thioamide derivative in a regioselective manner. Reaction of this compound with several alpha-bromocarbonyl compounds gave new 2-[(E)-(benzo[d]thiazol-2(3H)-ylidene)(cyano)methyl]thiazoles.
Investigation and comparison of biological effects of regioselectively synthesized thiazole derivatives
In this study, anticancer, antibacterial (against hospital-isolated antibiotic-resistant Escherichia coli strains), antifungal, and antioxidant effects of synthesized heterocyclic compounds 5 and 7 containing thiazole core were examined. Cytotoxicity testing was utilized against MCF-7 breast cancer cells via MTT cell viability assay. Antibacterial and antifungal activities were checked out according