Results 61 to 70 of about 1,474 (179)

Microwave Irradiation Promoted Reactions of Orthoesters with Carboxylic Acid Hydrazides. Preparation of 1,3,4-Oxadiazoles [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 1997
Rapid and highly efficient synthesis of 2- or 2,5-substituted 1,3,4-oxadiazoles by the condensation of aryl carboxylic acid hydrazides and orthoesters can be achieved under microwave irradiation using an unmodified commercial over in unsealed vessels.
Mohammad Sadegh Khajavi   +2 more
doaj  

Design, Synthesis, and Biological Evaluation of Novel Triazine‐Based Dual Histone Deacetylase/phosphatidylinositol 3‐kinase Inhibitors for Breast Cancer Therapy

open access: yesChemMedChem, Volume 21, Issue 8, 28 April 2026.
Breast cancer is the most frequently diagnosed malignancy and a leading cause of cancer‐related mortality among women worldwide. Triple‐negative breast cancer (TNBC) poses a major clinical challenge due to its aggressive nature, limited therapeutic options, and high propensity for drug resistance.
Lara Luzietti   +9 more
wiley   +1 more source

Synthesis under Microwave Irradiation of [1,2,4]Triazolo[3,4-b] [1,3,4]thiadiazoles and Other Diazoles Bearing Indole Moieties and Their Antimicrobial Evaluation

open access: yesMolecules, 2011
Microwave-assisted synthesis of some novel compounds, namely, 3-(2-methyl-1H-indol-3-yl)-6-aryl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazoles 5a,b was accomplished via bromination of 2-methyl-3-[4-(arylideneamino)-5-mercapto-4H-[1,2,4]triazol-3-yl]-1H ...
Sobhi M. Gomha, Sayed M. Riyadh
doaj   +1 more source

Studies on Synthesis of Pyrimidine Derivatives and their Pharmacological Evaluation

open access: yesE-Journal of Chemistry, 2007
1,3,4-Oxadiazoles were associated with broad spectrum of biological activities including antituberculosis, anticonvulsant, anti-inflammatory, insecticidal, antifungal, analgesic and antitumor properties. Morpholine derivatives find their wide spectrum of
T. A. Naik, K. H. Chikhalia
doaj   +1 more source

Synthesis, Cytotoxicity, Xanthine Oxidase Inhibition, Antioxidant of New Pyrazolo{3,4 d}Pyrimidine Derivatives

open access: yesمجلة بغداد للعلوم, 2019
Allopurinol derivative were prepared by reacting the (1-chloroacetyl)-2-Hydropyrazolo{3,4-d}pyrimidine-4-oneiwith 5- methoxy- 2-aminoibenzothiazoleiunder certain conditions to obtain new compound  ( N- (2-aminoacetyl (5-methoxy) benzothiazole -2yl) (A4),
Khammas et al.
doaj   +1 more source

Synthesis, Characterization and study biologicalactivity of several 1-cyclopentene-1,2-dicarboxylimidyl Containing oxadiazole and Benzothiazole

open access: yesمجلة بغداد للعلوم, 2014
In this work involved prepared of several new 1-cyclopentene-1,2-dicarboxylimide linked to oxadiazole and benzothiazole moiety were synthesized by two steps: The first step 2-amino-substituted-1,3,4-oxadiazoles and substituted-2-aminobenzothiazole were ...
Baghdad Science Journal
doaj   +1 more source

Improved Protocol Toward 1,3,4-Oxadiazole-2(3H)-thiones and Scale-up Synthesis in the Presence of SDS as a Micelle Promoted Catalyst

open access: yesActa Chimica Slovenica, 2015
Convenient procedure for in situ cyclization of hydrazinecarbodithioate potassium salts to 1,3,4-oxadiazole-2(3H)-thiones under normal phase micellar media catalysis promoted by sodium dodecyl sulfate (SDS) as an anionic surfactant is reported.
Ayhan YILDIRIM
doaj   +1 more source

1,3,4-Oxadiazole as an Anticancer Agent

open access: yesInternational Journal For Multidisciplinary Research
The modern era's fastest-growing disease is cancer, it poses a serious threat to people's lives. For the treatment of various cancers, the FDA has approved a number of medications. However, because of the rise in drug toxicity incidents, there is a continual need for the discovery of novel anti-cancer drugs.
Vaishnavi Chopade -, Vinayak Gaware -
openaire   +1 more source

Molecular Structure, Matrix-Isolation IR Spectrum and UV-Induced Transformations of 2-Amino-5-(4-Methoxyphenyl)-1,3,4-Oxadiazole

open access: yesMolecules
The photochemistry of 1,3,4-oxadiazoles remains poorly understood, despite their recognized importance in medicinal chemistry and materials science. In this work, we report a detailed matrix-isolation study of 2-amino-5-(4-methoxyphenyl)-1,3,4-oxadiazole,
İsa Sıdır   +3 more
doaj   +1 more source

Synthesis, Reactions and Antioxidant Activity of 5-(3', 4'-dihydroxy-tetrahydrofuran-2'-yl)-2-methyl-3-carbohydrazide [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2019
In this manuscript, we describe the synthesis of the carbohydrazide 2. Acid-catalyzed condensation with several carbonyl compounds to afford the corresponding carbohydrazide derivatives 3-12.
Mohamed El Sadek   +4 more
doaj  

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