7-Oxa-4-thia-1-aza-bicyclo[3.2.1]octane 4,4-Dioxides: Mechanochemical Synthesis by Tandem Michael Addition-1,3-Dipolar Cycloaddition of Aldoximes and Evaluation of Antibacterial Activities
作者:Zigmee T. Bhutia、Avijit Das、Malabika Biswas、Amrita Chatterjee、Mainak Banerjee
DOI:10.1002/ejoc.201701511
日期:2018.1.31
2.1]octane-4,4-dioxide derivatives in good overall yields. The newly synthesized bicyclo aza-sulfone derivatives (4) were screened for antibacterial activities. It was found that mostly bicyclo aza-sulfones derived from electron rich aromatic aldehydes inhibit the growth of Mycobacterium smegmatis (mc2-155) and that of aliphatic aldehydes inhibit the growth of Escherichia coli (DH5a) in moderate to
一种用于合成一系列桥连双环氮杂砜衍生物的无溶剂、绿色、高效的机械化学方法。7-oxa-4-thia-1-aza-bicyclo[3.2.1]octane-4,4-dioxides 通过醛肟的串联迈克尔加成-1,3-偶极环加成得到了开发。机械化学研磨/研磨有助于从相应的醛和羟胺快速形成醛肟,在混合研磨机中与二乙烯基砜反应后得到 7-oxa-4-thia-1-aza-bicyclo[3.2.1]octane-4,4-总体收率良好的二氧化物衍生物。筛选了新合成的双环氮杂砜衍生物 (4) 的抗菌活性。发现大多数源自富电子芳香醛的双环氮杂砜抑制耻垢分枝杆菌 (mc2-155) 的生长,脂肪醛抑制大肠杆菌 (DH5a) 的生长,效果中等至良好。然而,发现丁醛衍生的化合物 4r 对耻垢分枝杆菌和大肠杆菌都非常有效。这种机械化学方法的主要优点是无催化剂和溶剂条件,反应时间更短,以及新系列的 7-oxa-4