aldehyde 3r and then condensed with nitromethane using alumina as base to give the alcohol 3s, dehydration of which produced the nitroethene 3t. Iron-acetic acid treatment of compound 3t produced aaptamine 1a. Isoquinoline-1 -carbaldehydes 3q and r reacted with ammonium acetate to produce imidazo[5,1-a]isoquinolines 6a and 6b. 1 -Lithiomethyl-6,7-dimethoxyisoquinoline reacted with ethyl chloroformate
将6,7-甲氧基-
1-甲基异喹啉3a在C-8处硝化,氧化成硝基醛3r,然后使用氧化铝作为碱与
硝基甲烷缩合,得到醇3s,将其脱
水生成
硝基乙烯3t。化合物3t的
铁-
乙酸处理产生了aptapamine 1a。
异喹啉-1-甲醛3q和r与
乙酸铵反应生成
咪唑并[5,1- a ]
异喹啉6a和6b。1-Lithiomethyl-6,7-dimethoxyisoquinoline与
氯甲酸乙酯反应生成酯3I反过来,它很容易被氧化成α-
酮酸酯3n。将后者硝化,得到3o,然后将其还原环化,得到1 H-苯并[ d,e ] [1,6]
萘啶-2,3-二酮4。