3′-deoxyparomamine (1), D-ribose and (S)-4-amino-2-hydroxybutyric acid (AHBA). The synthesis involves replacement of the 6′-hydroxyl group of 3′-deoxyparomamine with azidogroup, 1,6-carbamate ring formation, condensation with tri-O-(p-nitrobenzovl)-α,β-D-ribofuranosyl bromide, selective cleavage of the carbamate ring, and acylation of the free amino group at C-1 with AHBA.