Chemoenzymatic synthesis of the macrolide antibiotic (−)-A26771B†
Abstract
The formal and total syntheses of the macrolide antibiotic (−)-A26771B have been developed wherein the stereochemistries at its C-5 and C-15 centres were installed using the lipase-catalyzed acylation of suitable MeCH(OH) and allylic secondary carbinol centres. A lipase-catalyzed chemoselective and hazard-free acrylation protocol, and a ring-closing metathesis reaction were used to construct the macrocyclic skeleton.