Abstract
Suitably protected 5-O-β-D-ribofuranosyl-2-deoxystreptamine was condensed with protected 2, 6-diamino-2, 6-dideoxy-α-D-glucopyranosyl bromide by a modified Königs-Knorr reaction to give three condensation products. One of which was confirmed as a ribostamycin derivative. The others were designated as its 6-O-α- and 6-O-β-isomers by the PMR spectra of their free bases and N-acetyl derivatives and by their chemical reactions.
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