Microwave-assisted and conventional synthesis of novel antimicrobial 1,2,4-triazole derivatives containing nalidixic acid skeleton
Yükleniyor...
Dosyalar
Tarih
2016
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Walter De Gruyter Gmbh
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Carbothioamides 4a,b, obtained from nalidixic acid, were converted to the corresponding 1,3-thiazolidine derivatives 5a,b by cyclocondensation with 2-bromo-1-(4-chlorophenyl)ethanone. Treatment of 4a,b with base afforded 1,2,4-triazoles 6a,b. The synthesis of 1,3-oxazolidine 7 was performed by the reaction of compound 4a with ethyl bromoacetate. Treatment of 4a with acid produced 1,3,4-thiadiazole 8. The reaction of compounds 6a and 6b with several heterocyclic amines in the presence of formaldehyde gave the corresponding Mannich bases 9–15 containing various pharmacophore groups. Conventional and microwave-assisted methods were used for the synthesis. The effect of an acid catalyst on Mannich reactions was investigated. The structures of the newly synthesized compounds were elucidated on the basis of 1H NMR, 13C NMR, FTIR, EIMS techniques, and elemental analysis. All compounds were screened for their antimicrobial activity.
Açıklama
Anahtar Kelimeler
1,2,4-triazole, Antimicrobial activity, Mannich base, Nalidixic acid, Norfloxacin
Kaynak
Heterocyclic Communications
WoS Q Değeri
N/A
Scopus Q Değeri
Q3
Cilt
22
Sayı
4
Künye
Ceylan, S., Bayrak, H., Ozdemir, S. B., Uygun, Y., Mermer, A., Demirbas, N., & Ulker, S. (2016). Microwave-assisted and conventional synthesis of novel antimicrobial 1, 2, 4-triazole derivatives containing nalidixic acid skeleton. Heterocyclic Communications, 22(4), 229-237.
