Toward the stereochemical assignment of euvesperins A and B: total synthesis of the possible structures of the natural products

Abstract

The possible structures of euvesperins A and B were synthesized. The results of our synthesis suggest that euvesperin A may be a mixture of the (2R,3R,4S,7S) and (2S,3S,4R,7S) isomers and euvesperin B may be a mixture of the (2R,3S,4S,7S) and (2S,3R,4R,7S) isomers in consideration of their putative biosynthetic pathways.