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Novel 2-amino-1,3,4-thiadiazoles and their acyl derivatives: Synthesis, structural characterization, molecular docking studies and comparison of experimental and computational results    
Yazarlar
Mustafa Er
Gamze Işıldak
Hakan Tahtacı
Karabük Üniversitesi, Türkiye
Doç. Dr. Tuncay KARAKURT
Ahi Evran Üniversitesi, Türkiye
Özet
This study aims to synthesize and characterize compounds containing 2-amino-1,3,4-thiadiazole and compare experimental results to theoretical results. For this purpose, firstly mono, di and tetra 2-amino-1,3,4-thiadiazole compounds (2a-c, 14, 20 and 25) were synthesized in relatively high yields (74-87%). The target compounds (3-11, 15-17, 21-23 and 26-28) were then synthesized in moderate to high yields (65-85%) from the reactions of 2-amino-1,3,4-thiadiazole compounds with various acyl chloride derivatives.
The structures of all synthesized compounds were elucidated by IR, H-1 NMR, C-13 NMR, elemental analyses and mass spectroscopy techniques. The structures of 2b (C9H8N4O2S) and 2c (C11H13N3O2S) were also elucidated by X-ray diffraction analysis.
Lastly, IR spectrum, H-1 NMR and C-13 NMR chemical shift values, frontier molecular orbital (FMO) values of these molecules containing heteroatoms were examined using the Becke-3- Lee-Yang-Parr (B3LYP) method with the 6-31G(d) basis set. Two different molecular structures containing 2-amino-1,3,4-thiadiazole (2b, 2c) were used in our study to examine these properties. Also, compounds 2b and 2c form a stable complex with beta-Lactamase as can be understood from the binding affinity values and the results show that the compound might inhibit the beta-Lactamase enzyme. It was found that theoretical and experimental results obtained in the experiment were compatible with each other and with the values found in the literature. (C) 2016 Elsevier B.V. All rights reserved.
Anahtar Kelimeler
2-amino-1,3,4-thiadiazole | Crystal structure | NMR | B3LYP
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı JOURNAL OF MOLECULAR STRUCTURE
Dergi ISSN 0022-2860
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 04-2016
Cilt No 1110
Sayfalar 102 / 113
Doi Numarası 10.1016/j.molstruc.2016.01.045
Makale Linki https://linkinghub.elsevier.com/retrieve/pii/S002228601630045X