Synthesis of novel fused β-lactams by intramolecular 1,3-dipolar cycloadditions. Part 1. Tricyclic triazole
作者:David Davies、Michael J. Pearson
DOI:10.1039/p19810002539
日期:——
4-Azido-1-alk-2-ynylazetidin-2-ones (3), (14), and (19) when heated in refluxing toluene gave smooth intramolecular cycloaddition of the azido-group to the acetylene function to afford the corresponding 4H,7aH-azeto[1,2-a]-v-triazolo[3,4-c]imidazol-6(7H)-ones (4), (15), and (18). These products were antibacterially inactive, but possessed weak β-lactamase inhibitory properties, particularly against
当在回流的甲苯中加热时,4-Azido-1-alk-2-ynylazetidin-2-ones(3),(14)和(19)将叠氮基团平滑地分子内环加成到乙炔基上,得到相应的4 ħ,7α ħ -azeto [1,2一] - v -三唑并[3,4- c ^ ]咪唑-6-(7 ħ) -酮(4),(15),和(18)。这些产物是无抗菌活性的,但是具有弱的β-内酰胺酶抑制特性,特别是针对葡萄球菌酶。