AMINOGLYCOSIDES: CHEMICAL STRUCTURE
Aminoglycoside R1 R2 R3 R4 R5 R6 R7 R8 R9
Isepamicin OH OH OH H COR H CH3 OH CH3
Amikacin OH OH OH H COR’ CH2OH OH H H
Kanamycin A OH OH OH H H CH2OH OH H H
Kanamycin B NH2 OH OH H H CH2OH OH H H
Gentamicin C1a NH2 H H H H H CH3 OH CH3
R = -CHOHCH2NH2; R’ = -CHOH(CH2) 2NH2