Formation of 8-Hydroxyphenanthridines by Microwave-Mediated IMDAF Reactions; Synthesis Directed towards Lycorine Alkaloids
作者:Håkon Saetren Gulbrandsen、Halvard Serigstad、Matthew Lovell Read、Ilah Joos、Lise-Lotte Gundersen
DOI:10.1002/ejoc.201901000
日期:2019.9.22
8‐Hydroxyphenathridines have been synthesized from N‐propargyl‐ortho‐furylanilines by a one‐pot intramolecular Diels–Alder reaction on furans (IMDAF) reaction and aromatization. N‐Propargyl‐7‐furylindol(in)es also underwent IMDAF cyclization to give (4,5‐dihydro)7H‐pyrrolo[3,2,1‐de]phenanthridin‐9‐ols These are structurally closely related to bioactive lycorine alkaloids.
通过一锅内呋喃分子内Diels-Alder反应(IMDAF)和芳构化反应,由N-炔丙基-邻-呋喃基苯胺合成了8-羟基苯并吡啶。N-炔丙基-7-呋喃啉(in)也经历了IMDAF环化反应,得到(4,5-二氢)7 H-吡咯并[3,2,1- de ]菲啶-9-醇这些在结构上与生物活性的赖氨酸密切相关生物碱。