作者:Aliasghar Jarrahpour、Malihe Aye、Véronique Sinou、Christine Latour、Jean Michel Brunel
DOI:10.1007/s13738-015-0685-x
日期:2015.12
A series of new monocyclic β-lactams bearing several methoxy groups and possessing a similar meticillin structure was prepared by the ketene–imine [2+2] cycloaddition reaction (Staudinger reaction). The cycloaddition reaction was found to be totally diastereoselective for 3a-l (electron donating phenoxy ketenes) and 3u leading exclusively to the formation of cis-β-lactams while 3m-o, 3q-s, and 3v-x
通过烯酮-亚胺[2 + 2]环加成反应(施陶丁格反应)制备了一系列带有几个甲氧基并具有相似甲氧西林结构的新型单环β-内酰胺。发现环加成反应对3a-1(给电子的苯氧基乙烯酮)和3u完全非对映选择性,导致形成顺式-β-内酰胺,而3m-o,3q-s和3v-x作为反式非对映异构体形成。。发现β-内酰胺3p,3t和3y是顺/反非对映异构体的混合物。化合物3a-x被测试抗氯喹的p。恶性疟原虫K14株,表现出低至优异的活性,IC 50为5至50 µM。