作者:Zafer Kaplancıklı、Leyla Yurttas、Gülhan Turan-Zitouni、Ahmet Özdemir、Gamze Göger、Fatih Demirci、Usama Mohsen
DOI:10.2174/15701808113109990037
日期:2013.11
The synthesis of twelve new pyrimidine hydrazone derivatives and subsequent evaluation of their antimicrobial
activities were the aims of this present work. The intermediate product 2-[(pyrimidin-2-yl)thio]acetohydrazide was refluxed
with different aromatic aldehydes/ketones in ethanol to yield N’-(arylidene)-2-[(pyrimidine-5-yl)thio]-
acetohydrazide derivatives (3a-l). The structures of the compounds were elucidated by NMR, FTIR, MS, and elemental
analyses. Additionally the final compounds (3a-l) were evaluated for their antimicrobial activity using a microdilution
method against a panel of pathogenic Gram positive, Gram negative, and fungus strains, i.e. Escherichia coli, Pseudomonas
aeruginosa, Salmonella typhimurium, Bacillus cereus, Bacillus subtilis, Serrratia marcescens, Staphylococcus epidermidis,
and Candida utilis. Compound N’-(2-pyrilidene)-2-[(pyrimidine-5-yl)thio]acetohydrazide (3a) possessing a 2-
pyridyl moiety was found to be the most active (MIC= 31.25-250 g/mL) derivative toward the tested microorganisms.
本研究旨在合成十二种新的嘧啶脒类衍生物,并随后评估它们的抗微生物活性。将中间产物2-[(嘧啶-2-基)硫代]乙酰肼与不同的芳香醛/酮在乙醇中回流反应,生成N’-(芳亚甲基)-2-[(嘧啶-5-基)硫代]乙酰肼衍生物(3a-l)。通过NMR、FTIR、MS和元素分析阐明了化合物的结构。此外,最终化合物(3a-l)通过微量稀释法对一组病原性革兰氏阳性、革兰氏阴性和真菌菌株,即大肠杆菌、铜绿假单胞菌、鼠伤寒沙门氏菌、枯草芽孢杆菌、蜡样芽孢杆菌、粘质沙雷氏菌、表皮葡萄球菌和热带念珠菌进行了抗微生物活性评估。具有2-吡啶基的化合物N’-(2-吡啶亚甲基)-2-[(嘧啶-5-基)硫代]乙酰肼(3a)被发现是测试微生物中最活跃的衍生物(MIC=31.25-250 µg/mL)。