Some new benzoxazinonylhydrazone analogs derived from substituted benzaldehydes and benzoxazin-3(4H)-one pharmacophore have been synthesized by simple and efficient methods, using ultrasound (US) irradiations as well as conventional thermal heating (CTH). The treatment of the benzoxazinonylhydrazide (3) with the corresponding aromatic aldehyde, resulted in the formation of benzoxazinonylhydrazones (4a–4f) in good yields and short reaction times. The proposed structures of the obtained hydrazone compounds were identified and elucidated on the basis of FT-IR and nuclear magnetic resonance (1H-NMR and 13C-NMR) spectroscopy. The synthesized compounds were screened in vitro for their antibacterial and antifungal activities against three types of bacteria (S. aureus, E. coli, P. aeruginosa) and one type of fungi (C. albicans), respectively, by disc diffusion method. All of these hydrazone compounds exhibited remarkable antifungal activity and very moderate antibacterial activity.
一些新的苯并噁唑啉基腙类似物通过简单高效的方法,利用超声(US)辐照以及传统热加热(CTH)合成,这些类似物是由取代苯甲醛和苯并噁唑-3(4H)-酮药基衍生而来的。苯并噁唑基腙(3)与相应的芳香醛处理后,在良好的产率和短反应时间内形成了苯并噁唑基腙(4a-4f)。通过傅立叶变换红外光谱(FT-IR)和核磁共振(1H-NMR和13C-NMR)光谱鉴定和阐明了所得腙类化合物的结构。通过圆盘扩散法,对合成的化合物进行了体外抗菌和抗真菌活性筛选,针对三种细菌(金黄色葡萄球菌、大肠杆菌、铜绿假单胞菌)和一种真菌(白念珠菌)。所有这些腙类化合物表现出显著的抗真菌活性和非常适度的抗菌活性。