Synthesis and antibacterial properties of new phenothiazinyl- and phenyl-nitrones
作者:Hermina Iulia Petkes、Emese Gál、Luiza Găină、Mihaela Sabou、Cornelia Majdik、Luminiţa Silaghi-Dumitrescu
DOI:10.1016/j.crci.2013.12.011
日期:2014.10
Résumé The synthesis of new phenothiazinyl- and phenyl-nitrones under classical versus microwave heating conditions is described. Better yields were obtained under microwave irradiation in the condensation reactions of phenothiazyl-carbaldehyde with hydroxylamine derivatives. The structures of the new phenothiazinyl-nitrones were assigned on the basis of MS, FT–IR and NMR spectra. The new nitrones and some known phenyl-nitrones were screened for their antibacterial and antifungal activity against several Candida species, Gram negative bacteria, such as E. coli, Citrobacter spp, Morganella spp, Pseudomonas aeruginosa, Klebsiella pneumoniae (± ESBL), Proteus spp, Acinetobacter spp and the Gram positive bacterium Staphylococcus aureus, with moderate results. Supplementary Materials: Supplementary material for this article is supplied as a separate file: mmc1.doc
摘要 描述了在传统和微波加热条件下合成新的吩噻嗪基和苯基硝基脲的过程。在微波辐照下,吩噻嗪甲醛与羟胺衍生物的缩合反应获得了更好的产率。根据质谱、傅立叶变换红外光谱和核磁共振光谱,确定了新的吩噻嗪基硝化物的结构。对新的硝基蒽和一些已知的苯基硝基蒽进行了抗菌和抗真菌活性筛选,其抗菌和抗真菌活性针对的是几种念珠菌、革兰氏阴性菌(如大肠杆菌、柠檬酸杆菌属、摩根氏菌属、铜绿假单胞菌、肺炎克雷伯菌(± ESBL)、变形杆菌属、醋酸杆菌属和革兰氏阳性菌金黄色葡萄球菌),结果中等。 补充材料: 本文的补充材料以单独文件形式提供:mmc1.doc