Development of an Alkaloid–Pyrone Annulation: Synthesis of Pleiomaltinine

Abstract

Odd Couple: A method for the synthesis of alkaloid-pyrones using a novel pyrone annulation of β-carbolines and indoles with 3-siloxy-4-pyrones is reported. The approach has enabled synthesis of the unusual alkaloid-pyrone pleiomaltinine from the plant-derived indole-alkaloid pleiocarpamine (see Scheme; TBS= tert-butyldimethylsilyl). Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.