Annulated 1,2,3,4-tetrahydro-β-carbolines by intramolecular Mannich-type amino- and amidoalkylations of N(9)-(ω-nitroalkyl)-3,4-dihydro-β-carbolines
作者:Elizabeth Malamidou-Xenikaki、Christina Vlachou、Xenophon N. Stampelos
DOI:10.1016/j.tet.2006.08.020
日期:2006.10
diazacycloalkano[jk]fluorenes in two diastereoisomeric forms 18 and 19 with moderate selectivity. Conjugate addition reactions performed on compounds 18 and 19 led to pentacyclic indolo[3,2,1-de]pyrido[3,2,1-jk]naphthyridinone 26a or diazabenzo[a]naphtho[2,1,8-cde]azulenone 26b.
将2- [1-(ω-硝基烷基)-1 H-吲哚-3-基]乙基甲酰胺11转化为相应的9-(ω-硝基烷基)-4,9-二氢-3 H -β-咔啉5并通过高产率地将非对映选择性分子内氨基烷基化成环状的四氢-β-咔啉13。化合物5的分子内N-酰基环化得到具有中等选择性的两种非对映异构形式18和19的四环二氮杂环烷[ jk ]芴。对化合物18和19进行的共轭加成反应导致五环吲哚并[3,2,1- de ]吡啶并[3,2,1- jk ]萘并吡啶酮26a或二氮杂苯并[ a ]萘并[2,1,8- cde ] azulenone 26b。