Synthesis of Plakortolides E and I Enabled by Base Metal Catalysis.

Organic Letters
Stefan LeiseringMathias Christmann

Abstract

A protecting-group-free synthesis of two endoperoxide natural products, plakortolide E and plakortolide I, is reported. Key steps are a vanadium-mediated epoxidation, an iron-catalyzed allylic substitution, and a cobalt-induced endoperoxide formation. Our approach combines chemoselective bond-forming reactions and one-pot operations to forge an overall efficient synthesis.

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