8-azagonane (cyclopenta[5,6]pyrido[2,1-a]isoquinoline or benzo[a]cyclopenta[f]quinolizine) structures was developed and exemplified by cyclocondensation of 1-alkyl-3,4-dihydroisoquinolines with ethyl 2-oxocyclopentanecarboxylate.
开发并举例说明了构建四环 8-氮杂酮(环戊[5,6]
吡啶并[2,1-a]
异喹啉或苯并[a]环戊[f]
喹啉)结构的新方法(AB + D → ABCD)通过 1-烷基-
3,4-二氢异喹啉与
2-氧代环戊烷羧酸乙酯的环缩合反应。