| abstract |
Peptide compounds of formula 1, pharmaceutically acceptable base salts thereof, pharmaceutical compositions and their use as antiinfective agents <CHEM> where R1 is alkyl, cycloalkyl or cycloalkylmethyl; R2 is hydrogen or alkyl and R3 is hydroxy or an amino acid residue of the formula <CHEM> where X is hydrogen, alkyl or hydroxymethyl and n is an integer of 0 to 4 and R4 and R5 are alkyl, hydrogen, benzyl or cyclohexylmethyl. |