New polycyclic β-lactams. Synthesis of 2a,3-dihydroazeto[1,2-a]quinoline-1,4(2H)-diones, structural analogues of the carbacephalosporin antibiotics
作者:Mario D. Bachi、Joseph Klein
DOI:10.1039/p19830001925
日期:——
dihydroxydihydroazeto[1,2-a]quinoline-1,4(2H)-diones (1). The synthesis involved, as a key step, the completion of the polycyclic β-lactam system by a modified Bischler–Napieralski reaction. It was illustrated by the synthesis of (±)-7,8-dihydroxy-3,3-dimethyl-2-phenoxyacetamido-2a,3-dihydroazeto[1,2-a]quinoline-1,4(2H)-dione (20), which is structurally related to the carbacephalosporin antibiotics.
已经开发了一种制备二羟基二氢氮杂[1,2 - a ]喹啉-1,4(2H)-二酮(1)的方法。作为关键步骤,合成过程涉及通过修饰的Bischler-Napieralski反应完成多环β-内酰胺系统。通过(±)-7,8-二羟基-3,3-二甲基-2-苯氧基乙酰胺基-2a,3-二氢氮杂并[1,2 - a ]喹啉-1,4(2 H)-二酮的合成说明了这一点。(20),其在结构上与氨基头孢菌素抗生素有关。