Concise Total Synthesis of Biologically Interesting Pyranochalcone Natural Products: Citrunobin, Boesenbergin A, Boesenbergin B, Xanthohumol C, and Glabrachromene

摘要

New and efficient synthetic approaches to the biologically interesting natural products citrunobin, boesenbergins A and B, xanthohumol C, and glabrachromene are described. The key strategies involve ethylenediamine diacetate catalyzed benzopyran formation reactions and base-catalyzed aldol reactions.