نتایج جستجو برای: thiazoles
تعداد نتایج: 839 فیلتر نتایج به سال:
Imidazo[2,1-b]thiazoles are obtaind in excellent yields from the addition reaction between thiohydantoin and ethylbromopyruvate. These imidazo[2,1-b]thiazoles in the presence of p-TSA in boiling toluene refluxed for 2.5 hours led to imidazo[2,1-b]thiazole-3-carboxylates in elimination reactions
The reactivity of 2-deoxy-2-iodoglycosyl isothiocyanates toward O- and S-nucleophiles gives an easy access to 2-deoxy-2-iodoglycopyranosyl thiocarbamates and dithiocarbamates. Internal nucleophilic displacement of the iodine by the sulfur atom in these compounds allows the preparation of glycopyranoso[1,2-d]-1,3-thiazoles and glycopyranoso[1,2-d]-1,3-thiazolidin-2-one or -2-thione. Reaction wit...
Novel imidazo[2,1-b]thiazoles were synthesized in good yield via a mild reaction of thiophenytoin and diethyl oxalatein the presence of 10% mol p-TSA.
Azole derivatives are valuable precursors in pharmacological arena. In fact, oxazole, thiazole and imidazole containing scaffolds display a variety of biological activities such as antitumor,1 antibacterial,2 antiviral,3 antioxidant,4,5 anti-inflammatory6 antifungal7 activities. Azoles also prominant molecules various biochemical synthetic transformations. Based on the importance these heteroar...
ABSTRACT: Mastitis causes significant economic losses to the dairy cattle industry. The present study aimed evaluate antibacterial properties of 39 heterocyclic derivatives (1,3-thiazoles and 4-thiazolidinones) against clinical mastitis isolates from cows. Milk samples were collected cows with bacterial species identified by PCR. Antibacterial activity was assessed using broth microdilution met...
A facile synthesis and anticancer activity of some novel thiazoles carrying 1,3,4-thiadiazole moiety
BACKGROUND Thiazoles and 1,3,4-thiadiazoles have been reported to possess various pharmacological activities. RESULTS A novel series of thiazoles carrying 1,3,4-thiadiazole core were designed and prepared via the reaction of the 2-(4-methyl-2-phenylthiazole-5-carbonyl)-N-phenylhydrazinecarbo-thioamide with the appropriate hydrazonoyl chlorides. The structures of the newly synthesized compound...
Thiazoles, oxazole and their corresponding reduced derivatives, thiazolines and oxazolines, are found in marine sources exhibiting significant biological activities. The isolation, synthetic, and biological studies of these natural products, covering literature from January 2007 to June 2010, are summarized.
Endothiopeptides can easily be obtained via Ugi reaction using thio acids as acid components. If isonitriles with an acetal group are applied, the endothiopeptides can directly be converted into thiazoles using TMSCl-NaI under microwave irradiation.
The metabolism of three nephro- or hepatotoxic thiazoles--2-(thiazol-4-yl)benzimidazole (thiabendazole) (1a), 4-tert-butyl-2-methyl-thiazole (1b), and 2-(p-methoxyphenyl)-4-methylthiazole (1c)--was examined in mice with special regard to the formation of ring cleavage products. By GC/MS analyses of derivatized metabolites and comparison with authentic samples, thioformamide and benzimidazol-2-y...
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