The First total synthesis of the proposed structure of Montiporyne E

Abstract

Montiporyne E, a novel diacetylenic lactam isolated from the stony coral Montipora sp., was shown to exhibit cytotoxicity against certain solid tumor cells. Construction of a suitably functionalized α,β-unsaturated lactam for palladium-catalyzed couplings was realized via a Beckmann rearrangement. Subsequent Sonagoshira coupling with a known alkyne chain efficiently afforded the alleged structure of the natural product.