AbstractImidazo‐1,5‐alkynyl alcohol derivatives were synthesized, and they were cyclized to imidazo‐1,4‐oxazines by means of cesium carbonate. Propargyl‐allene isomerization was examined, and the reaction mechanism was proposed. Moreover, cytotoxicity of synthesized molecules against LN405 cell lines was investigated by means of structure‐activity relationship (SAR). With SAR study, toxicities of some functional groups have been shown. In addition, two lead compounds were tested against DNA damaging.
A novel strategy of copper(I)-catalyzed cascade intramolecular nucleophilic attack on N-sulfonylketenimine followed by rearrangement of sulfonimidates to sulfonamides resulting in a library of substituted 8,9-dihydro-5H-imidazo[1,2-a][1,4]diazepin-7(6H)-ones has been developed.
铜(I)催化N-磺酰基酮亚胺级联分子内亲核攻击,然后将亚磺酰胺重排为磺酰胺的新策略,从而形成取代的8,9-二氢-5 H-咪唑并[1,2- a ] [1 ,4] diazepin-7(6 H)-ones已经开发出来。