Modification of seldomycin factor 5 at C-3'.

Abstract
Attempted removal of the 3''-hydroxyl group of seldomycin factor 5 via displacement of a sulfonate ester led to 3''-epi-seldomycin factor 5. Removal of the hydroxyl group was effected by the Barton procedure. The antibacterial activity of 3''-epi- and 3''-deoxyseldomycin factor 5 against various aminoglycoside-resistant strains is discussed.