Synthesis and Biological Activity of Some 3-Aryl-3,4-dihydro-2H-benz[e]- 1,3-oxazines/6-bromo-3-aryl-3,4-dihydro-2H-benz[e]-1,3-oxazines
作者:Davender Kumar Shukla、Manju Rani、Arif Ali Khan、Kavita Tiwari、Rajinder K. Gupta
DOI:10.14233/ajchem.2013.14091
日期:——
N-(2-Hydroxy)-benzyl-arylamine (1) gives substantially pure 3-aryl-3,4-dihydro-2H-benz[e]-1,3-oxazines/6-bromo-3-aryl-3,4-dihydro-2H-benz[e]-1,3-oxazines (2) on cyclization with formaldehyde in methanol within 0.5-1.0 h at 65-68 ºC in excellent yields. The compounds thus prepared were screened for their antimicrobial studies against Gram-positive bacteria (Staphylococcus aureus, MTCC 96) and Gram-negative bacteria (E. coli, MTCC 739). For estimating antifungal activity the organism used is Candida albicans. Minimum inhibitory concentration of all the compounds was determined using the micro-broth dilution method.
N-(2-羟基)-苄基芳胺(1)在甲醇中与甲醛进行环化反应,在65-68°C下0.5-1.0小时内,可以高产率地得到几乎纯的3-芳基-3,4-二氢-2H-苯并[e]-1,3-恶嗪/6-溴-3-芳基-3,4-二氢-2H-苯并[e]-1,1-恶嗪(2)。这些化合物随后被用于针对革兰氏阳性细菌(金黄色葡萄球菌,MTCC 96)和革兰氏阴性细菌(大肠杆菌,MTCC 739)的抗菌活性研究。为了评估抗真菌活性,使用的真菌为白色念珠菌。所有化合物的最低抑制浓度是通过微量肉汤稀释法确定的。