Photocyclization of Enamides. XXXII. : Alkaloid Synthesis Using Furopyridone as a Synthon : Synthesis of Key Intermediates for the Synthesis of (±)-Quinine, (±)-Ajmalicine, and (±)-7-Demethyltecomanine

Abstract

Furopyridones 4a-c were shown to be available as synthons for alkaloid synthesis by their facile conversion to the key intermediates 13a, b, and 16 for the synthesis of quinine, ajmalicine, and 7-demethyltecomanine.