Synthesis of demethoxycapillarisin, a naturally occurring 2-phenoxychromone, and related compounds
Abstract
Demethoxycapillarisin (1), a naturally occurring 2-phenoxychromone, and the related compounds (2)–(4) have been synthesized via a route involving, as a key step, an intramolecular Wittig reaction between a phosphorus ylide and a carbonate.