Synthesis, Characterization, and Antibacterial and Anti-Inflammatory Activities of New Pyrimidine and Thiophene Derivatives
作者:Siham Lahsasni、Dunya A. M. Al-Hemyari、Hazem A. Ghabbour、Yahia Nasser Mabkhoot、Fadilah S. Aleanizy、Asma A. Alothman、Zainab M. Almarhoon
DOI:10.1155/2018/8536063
日期:2018.8.1
nucleophilic addition to a nitrile group to form the oxazinimine ring. 1-(3-cyano-substituted[b]thiophen-2-yl)-3-(4-(trifluoromethyl)phenyl)thiourea derivatives (6a–c) were obtained via reaction of the starting compounds (2d–f) and 4-(trifluoromethyl phenyl)isothiocyanate. The lead compounds (2d–f) rapidly reacted with 4-(trifluoromethyl)benzaldehyde or 4-(2-pyridyl)benzaldehyde in acidic medium to yield
通过反应合成取代的[4,5]噻吩并[2,3-d]噻唑并[3,2-a]嘧啶-5-酮(3a-b)和嘧啶-5(6H)-亚胺(3c-e)起始化合物,分别是 2-氨基取代的 [b] 噻吩-3-羧酸乙酯 (2a-c) 和 2-氨基取代的 [b] 噻吩-3-甲腈 (2d-f),分别与 2-溴噻唑. (溴取代[b]噻吩-2-基)烷酰胺衍生物(4a-e)和噻吩并[2,3-d][1,3]恶嗪-4-亚胺衍生物(5)的合成是通过以下反应完成的用溴代烷基氯亲核取代的起始化合物;然而,对于化合物 5 的合成,亲核取代之后是亲核加成到腈基以形成恶嗪亚胺环。1-(3-氰基取代的[b]噻吩-2-基)-3-(4-(三氟甲基)苯基)硫脲衍生物(6a-c)是通过起始化合物(2d-f)和4的反应获得的-(三氟甲基苯基)异硫氰酸酯。先导化合物(2d-f)在酸性介质中与4-(三氟甲基)苯甲醛或4-(2-吡啶基)苯甲醛快速反应,大量生成化合物(7a-f)。化合物