Synthetic applications of 2-aryl-4-piperidones. XI a new synthesis of the E-azaeburnamine skeleton
作者:Isabel López、Anna Diez、Mario Rubiralta
DOI:10.1016/0040-4020(96)00399-7
日期:1996.6
17-Azaeburnamine type compound 2 is synthesized by closure of ring E on 1-aminoindolo[2,3-a]quinolizidine 8. Compound 8 is obtained by a Neber rearrangement on the corresponding indolo[2,3-a]quinolizidin-2-one, or by KtBuO cyclisation of 3-amino-2-(2-indoly)piperidin-4-one 16. In both cases the starting substrate is 4-piperidone 3. The synthesis of the new [ABED] ring system 6 is also described.
通过在1-氨基吲哚并[2,3- a ]喹啉嗪8上环E的闭合来合成17-氮杂伯胺型化合物2。通过在相应的吲哚[2,3 - a ]喹啉齐丁-2-酮上进行Neber重排或通过3-氨基-2-(2-吲哚基)哌啶-4-酮16的K t BuO环化获得化合物8。在两种情况下,起始底物都是4-哌啶酮3。还描述了新的[ABED]环系统6的合成。