Antitumour polycyclic acridines. Part 5.1 Synthesis of 7H-pyrido[4,3,2-kl ]acridines with exploitable functionality in the pyridine ring
作者:Markus Julino、Malcolm F. G. Stevens
DOI:10.1039/a800575c
日期:——
Two series of new 9-(1,2,3-triazol-1-yl)acridines 8 and 11 have been synthesised by base catalysed cyclisation reaction of 9-azidoacridine 5 with either 1,3-dicarbonyl compounds or activated acetonitriles. Ring formation occurred in a regiospecific manner indicating a stepwise ionic reaction sequence. The combination of activating base and solvent, as well as the solubility of the products, are crucial
通过9-叠氮ac啶5与1,3-二羰基化合物或活化的乙腈的碱催化环化反应,已经合成了两个系列的新的9-(1,2,3-三唑-1-基)ac啶8和11。环形成以区域特异性方式发生,表明逐步的离子反应序列。活化碱和溶剂的结合以及产物的溶解性对于获得可接受的收率至关重要。9-(1,2,3-三唑-1-基)ac啶中的几种已转化为荧光7 H-吡啶基[4,3,2- klGraebe-Ullmann驱除氮的ac啶14是以沸腾的二苯醚为热解介质。在一种情况下,9- [4-甲氧基羰基-5-(4-氯丁基)-1,2,3-三唑-1-基] ac啶16的热解,氯丁基侧链参与了另外的分子内环化步骤五环喹啉并[2,3,4- kl ] ac啶18