Microwave-promoted synthesis and biological activity of some 2-hetarylmethyl-4-(4-hetarylphenyl)-5-methyl-2,4-dihydro-3H-1,2,4-triazol-3-one derivatives
CHEMISTRY OF HETEROCYCLIC COMPOUNDS, cilt.51, sa.1, ss.88-96, 2015 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 51 Sayı: 1
- Basım Tarihi: 2015
- Doi Numarası: 10.1007/s10593-015-1664-y
- Dergi Adı: CHEMISTRY OF HETEROCYCLIC COMPOUNDS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.88-96
- Anahtar Kelimeler: 1,2,4-triazole, triazolothiadiazines, triazolothiadiazoles, fused system, microwave synthesis, ASSISTED SYNTHESIS, BENZIMIDAZOLE DERIVATIVES, ANTIMICROBIAL ACTIVITIES, 1,2,4-TRIAZOLES, INHIBITORS, ANTIPYRINE, TRIAZOLES, CHEMISTRY
- Recep Tayyip Erdoğan Üniversitesi Adresli: Evet
Özet
A series of fused and non-fused 1,2,4-triazole derivatives were prepared starting from ethyl 4-[1-(2-ethoxy-2-oxoethyl)-3-methyl-5-oxo-1,5-dihydro-4H-1,2,4-triazol-4-yl]benzoate. Firstly, both ethyl ester groups were simultaneously transformed into hydrazide groups, then into 4-amino-5-mercapto-4H-1,2,4-triazol-3-yl groups using both microwave-assisted and conventional methods. The latter products interacted with 2 equiv of phenacyl bromides, chloroacetone, or chloroacetic acid to form ring assemblies containing two [1,2,4]triazolo-[3,4-b][1,3,4]thiadiazine fragments. Cyclization using 2 equiv of carboxylic acids, urea, or CS2 leads to the corresponding [1,2,4]triazolo-[3,4-b][1,3,4]thiadiazole derivatives. The synthesized compounds were evaluated in regard to their antimicrobial, anti-lipase, and antiurease activities.