3'-Deoxybutirosin A 55528-48-8 D-Streptamine, O-2,6-diamino-2,3,6-trideoxy-alpha-D-ribo-hexopyranosyl-(1-4)-O-(beta-D-xylofuranosyl-(1-5))-N1-(4-amino-2-hydroxy-1-oxobutyl)-2-deoxy-, (S)-