Synthesis of a Potent Rhodomycin, Oxaunomycin, and Its Analogs

Abstract

Oxaunomycin (3) and its regioisomer (6) were synthesized by employing regioselective glycosidations of te C-7 hydroxyl group of 10-O-acetyl-β-rhodomycinone (16) and the C-10 hydroxyl group of the C-7, 9-O phenylboronate (14), respectively, in the presence of trimethylsilyl trifluoromethanesulfonate. Under the Konigs-Knorr conditions, 16 was also glycosidated to provide a fluoro sugar analog (7).