1,3,2',6'-tetraazido-sisomicin
6'-(2-hydroxy-propanol)-2',3-diPNZ-1-(N-PNZ-4-amino-2(R)-hydroxy-butyryl)-3''-Boc-sisomicin
6'-(2-hydroxy-propionamide)-2',3-diPNZ-1-(N-Boc-3-amino-2(S)-hydroxy-propionyl)-3''-Boc-sisomicin
6'-(3-amino-propyl)-2',3-diPNZ-1-(N-Boc-3-amino-2(S)-hydroxy-propionyl)-3''-Boc-sisomicin
2',3-diPNZ-1-(N-Boc-3-amino-2(S)-hydroxy-propionyl)-3''-Boc-sisomicin