The commercially available aromatic polyketones 1a-d were utilized for the synthesis of the multi-arm1,2,3-selenadiazole derivatives 3a-d. The preparation starts with the reaction between compounds 1a-d and p-toluenesulfonyl hydrazide to give the corresponding tosylhydrazones 2a-d. Subsequent reaction with selenium dioxide leads to regiospecific ring closure of the tosylhydrazones to give the target multi-arm 1,2,3-selenadiazole derivatives in high yield. A 1,2,3-selenadiazole derivative 3e containing an epoxide ring was also prepared. The structures of all the synthesized compounds were confirmed on the basis of spectral and analytical data. The compounds were screened in vitro for their antimicrobial activity against various pathogenic bacterial and Candida strains obtained from King Abdullah Hospital in Irbid -Jordan. Compounds 3a, 3c and 3e were found to be highly active against all the selected pathogens. Compound 3e showed an inhibition zone of 13 mm against the highly resistant P. aruginosa.
商业上市的芳香聚酮1a-d被用于合成多臂1,2,3-
硒二唑衍
生物3a-d。合成过程首先是将化合物1a-d与对
甲苯磺酰
肼反应,得到相应的对苯磺酰
肼缩合物2a-d。随后与
二氧化硒反应促使对苯磺酰
肼缩合物特定位闭合,生成目标多臂1,2,3-
硒二唑衍
生物,并具有高产率。还合成了一个包含环氧基团的1,2,3-
硒二唑衍
生物3e。所有合成化合物的结构均基于光谱和分析数据得到了确认。对来自约旦伊尔比德的阿卜杜拉国王医院的各种致病细菌和念珠菌菌株进行了体外抗菌活性筛选。化合物3a、3c和3e对所有选定的病原体表现出较高的活性。化合物3e对耐药性极强的
铜绿假单胞菌表现出13毫米的抑制圈。