Dedicated to Prof. R. W. Hoffmann on the occasion of his 80th birthday
A synthesis of the 9-epimer of the marine natural product wailupemycin A is reported. The key reaction sequence consists of a diastereoselective enamine addition to a tricarbonyl monohydrate, the formation of an enol silyl acetal, and finally the stereocontrolled addition of the α-pyrone substructure.
Key words
vicinal tricarbonyl compound - enamine - α-pyrone - natural products - stereoselective synthesis