Synthesis of Phenylcarbamic Acid and 2-[2-Oxo-3-(4-substituted phenylimino)- indolin-1-yl]acetohydrazide Derivatives as Promising Antifungal Agents
作者:Zainab Al Marhoon、Ahmed Abdel-Megeed、Essam N. Sholkamy、M. Rafiq H. Siddiqui、Ayman El-Fahama
DOI:10.14233/ajchem.2014.17566
日期:——
Four phenylcarbamic acid methyl ester derivatives were prepared by oxidative transformation of isatins Schiff bases (Baeyer-Villiger oxidation) under conventional heating as well as microwave irradiation. The ester derivatives were treated with hydrazine hydrate under microwave irradiation to afford the hydrazide derivatives in less reaction time and good yield. 2-(2-Oxo-3-(4-substituted phenylimino)indolin-1-yl)acetohydrazide derivatives were also prepared from isatins Schiff bases under microwave irradiation in less reaction time and high yield and purity. The synthesized compounds exhibited promising antifungal activity particularly against the human pathogenic Candida albicans. While they did not show any activity against the Streptococcus pyogenes, Staphylococcus aureus, Salmonella typhi, Klebsiella pneumoniae, Pseudomonas aeruginosa, Aspergillus flavus and Aspergillus niger.
通过isoniazid希夫碱(拜耳-维利格氧化)在常规加热以及微波辐射下的氧化转化,制备了四种苯氨基甲酸甲酯衍生物。这些酯衍生物在微波辐射下与水合肼反应,得以在较短反应时间内以良好产率得到酰肼衍生物。2-(2-氧代-3-(4-取代苯亚胺基)吲哚啉-1-基)乙酰肼衍生物也在微波辐射下以较短反应时间和高产率及纯度从isoniazid希夫碱制备得到。合成的化合物表现出潜在的抗真菌活性,尤其对人类病原性白色念珠菌具有活性。然而,它们对链球菌、金黄色葡萄球菌、伤寒沙门氏菌、肺炎克雷伯菌、铜绿假单胞菌、黄曲霉和黑曲霉没有表现出活性。