From citronellal to iridoids: asymmetric synthesis of iridoids and their analogues via organocatalytic intramolecular Michael reactions

Abstract

A series of iridoids, including iridomyrmecin A, B, C', D', (–)-isoiridomyrmecin, (+)-7-epi-boschnialactone, and the inside-yohimbine analogs have been synthesized from the readily available, naturally occurring (–)-citronellal via the key step...