A Convenient Route to Quinolone-Fused Imides and Lactams: Synthesis of Pyrrolo[3,4-b]quinoline-3,9-diones and 1,3,9-triones by Oxidation of Indole Derivatives
作者:Christophe Tratrat、Sylviane Giorgi-Renault、Henri-Philippe Husson
DOI:10.1055/s-1998-1856
日期:1998.10
Pyrrolo[3,4-b]quinoline-3,9-diones have been obtained by Winterfeldt's oxidation (O2, t-BuOK, DMF) of readily available N(b)-substituted tetrahydropyrido[3,4-b]indol-1-ones (tetrahydrocarbazol-1-ones). Surprisingly, the oxidation using N(b)-unsubstituted analogue as starting material afforded under the same conditions pyrrolo[3,4-b]quinoline-1,3,9-trione. The difference in reactivity was interpreted. Two unknown pyrrolo[3,4-b]quinoline-1,9-dione derivatives have been synthesized by regioselective reduction of the imide function.
通过Winterfeldt氧化法(O2、t-BuOK、DMF),从易得的N(b)-取代的四氢吡啶[3,4-b]吲哚-1-酮(四氢卡巴唑-1-酮)中获得了吡咯并[3,4-b]喹啉-3,9-二酮。令人惊讶的是,使用N(b)-未取代的类似物作为起始材料,在相同条件下氧化得到了吡咯并[3,4-b]喹啉-1,3,9-三酮。对于反应性差异进行了阐释。通过区域选择性还原酰亚胺基,合成了两种未知的吡咯并[3,4-b]喹啉-1,9-二酮衍生物。