Synthesis and Antimicrobial Evaluation of Thieno[2,3-<i>d</i>]-pyrimidine, Thieno[2′,3′:4,5]pyrimido[1,2-<i>a</i>][1,3,5]triazine, Thieno[2,3-<i>d</i>]-1,3-thiazine and 1,2,4-Triazole Systems
Utility of Lauroyl Isothiocyanate as a Scaffold in the Synthesis of Some Novel Pyrimidine Derivatives and Their Antimicrobial Assessment
作者:Heba Kamal Abd El-Mawgoud、Magdy Mohamed Hemdan
DOI:10.1248/cpb.c18-00595
日期:2018.11.1
with enaminonitrile derivative 2 furnished N-(6-cyano-3, 4-diphenylthieno[2,3-c]pyridazin-5-yl-carbamothioyl)dodecanamide 3, which was used as precursor for the synthesis of novel heterocyclic systems. Polyfunctional pyrimidine and fused pyrimidine derivatives were obtained by the cyclization of compound 3 under different basic conditions as well as its reactions with thiourea, o-aminothiophenol, hydrazine
Synthesis, characterization of some new 1-aroyl-3-(4-aminosulfonylphenyl)thioureas and crystal structure of 1-(3,4,5-trimethoxybenzoyl)- 3-(4-aminosulfonylphenyl)thiourea
作者:Aamer Saeed、Amara Mumtaz、H. Ishida
DOI:10.1080/17415993.2010.541461
日期:2011.2.1
A small library of novel 1-aroyl-3-(4-aminosulfonylphenyl)thiourea derivatives was synthesized by the reaction of sulfanilamide with substituted aroyl isothiocyanates in dry acetonitrile. The scope of the reaction was indicated by the synthesis of 1-undecanoyl-3-(4-aminosulfonylphenyl)thiourea, an acyl derivative involving alkanoyl isothiocyanate. All the compounds have been characterized by analytical
通过磺胺与取代的芳酰基异硫氰酸酯在干燥乙腈中的反应,合成了一个小型的新型 1-芳酰基-3-(4-氨基磺酰基苯基) 硫脲衍生物。反应的范围通过合成 1-undecanoyl-3-(4-aminosulfonylphenyl)thiourea,一种涉及烷酰基异硫氰酸酯的酰基衍生物来表明。所有化合物都通过分析和光谱方法进行了表征,在一种情况下,通过单晶 X 射线衍射数据进行了表征。
Use of dodecanoyl isothiocyanate as building block in synthesis of target benzothiazine, quinazoline, benzothiazole and thiourea derivatives
作者:Magdy M. Hemdan、Eman A. El-Bordany
DOI:10.1515/chempap-2016-0042
日期:2016.1.1
anthranilic acid to afford derivatives of thiourea II and benzothiazine IIIin a one-pot reaction. The cyclisation of thiourea II was achieved using acetic anhydride to form quinazoline derivative IV. The heating of quinazoline IV in acetic anhydride or butan-1-ol gave quinazoline derivatives V or VI, respectively. Benzothiazine III underwent trans-acylation to benzothiazine VII in boiling acetic anhydride
A series of novel hybrid molecules containing sulfanilamide and thiourea templates was designed and synthesized. These compounds were screened for antimicrobial and urease inhibitory activities. Some of the compounds revealed promising antibacterial and antifungalactivities. Fascinatingly, the majority of the compounds exhibited potential urease inhibitory activities with IC50 ranging from 0.20 to
Four new thiourea compounds have been successfully synthesized and characterized from combination of lauroyl chloride, ammonium thiocyanate and simple amino acids in acetone. The structure of the respective compounds, namely 3-(3-dodecanoyl-thioureido)propionic acid (R1), 2-(3-dodecanoyl-thioureido)-3-methyl butyric acid (R2), (3-dodecanoyl-thioureido)acetic acid (R3) and 2-(3-dodecanoyl-thioureido)-3-phenyl propionic acid (R4) are confirmed by combination of spectroscopic techniques such as infrared, ultraviolet and nuclear magnetic resonance. The antibacterial activity of these compounds are investigated towards selected bacteria and the results show that compound R4 displays better antibacterial activity compared to R1-R3 and as well as to few reported compounds. Compound R4 shows good antibacterial activity towards two Gram-negative bacteria Escherichia coli and Salmonella typhimurium, with inhibition zone approximately 8 mm wide and minimum inhibitory concentration (MIC) 50 μg/mL, respectively. The good results given by R4 might be attributed by the presence of alkyl and phenyl group that increases the lipophilicity and stability of the compounds.