Synthesis of new hexahydro-5H-indolo[3,2-c]acridines and indolylbutanoic acids by Fischer cyclization of arylhydrazones
作者:Ekaterina V. Zaliznaya、Nikolai V. Smetanin、Svetlana A. Varenichenko、Alexandr V. Mazepa、Oleg K. Farat、Victor I. Markov
DOI:10.1007/s10593-018-2245-7
日期:2018.2
Arylhydrazones of 2,3,5,6,7,8-hexahydroacridin-4(1H)-ones and 7-amino-6-(arylhydrazono)-7-oxoheptanoic acids were cyclized by Fischer reaction, providing previously unknown polysubstituted indole derivatives. The starting hydrazones were synthesized under Japp–Klingemann reaction conditions by using 1,2,3,4,5,6,7,8-octahydroacridine-4-carboxamide and 2-oxocyclohexanecarboxamide as starting materials
通过Fischer反应将2,3,5,6,7,8-六氢ac啶酮-4(1 H)-一和7-氨基-6-(芳基azo氮杂)-7-氧庚酸的芳基hydr酮环化,得到以前未知的多取代的吲哚衍生物。在Japp–Klingemann反应条件下,以1,2,3,4,5,6,7,8-八氢ac啶-4-甲酰胺和2-氧代环己烷甲酰胺为起始原料合成了起始azo。从光谱数据确定,获得的7-氨基-6-(芳基肼基)-7-氧庚酸以(Z)-和(E)-异构体的混合物形式存在,但被转化为单独的(Z)-或-。DMSO溶液中的(E)-异构体。