نتایج جستجو برای: thiazoles

تعداد نتایج: 839  

Mahboobeh Kiamarsi Marzieh Jamali Mohammad Mehdi Ghanbari, Nasimeh Zarei, Pegah Mohagheghzadeh,

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

Journal: :The Journal of organic chemistry 2004
Joaquin Isac-García Fernando Hernández-Mateo Francisco G Calvo-Flores Francisco Santoyo-González

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...

Mahboobeh Kiamarsi Marzieh Jamali Mohammad Mehdi Ghanbari, Nasimeh Zarei, Yalda Shaabani

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.

Journal: :Nucleation and Atmospheric Aerosols 2022

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...

Journal: :Pesquisa Veterinaria Brasileira 2021

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...

2017
Sobhi M. Gomha Nabila A. Kheder Mohamad R. Abdelaziz Yahia N. Mabkhot Ahmad M. Alhajoj

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...

2010
Danilo Davyt Gloria Serra

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.

Journal: :Organic & biomolecular chemistry 2005
Uli Kazmaier Stefanie Ackermann

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.

Journal: :Drug metabolism and disposition: the biological fate of chemicals 1994
T Mizutani K Yoshida S Kawazoe

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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