| abstract |
New esters of Alpha -aminopenicillins having the formula WHEREIN R is C2-C7 alkyl; WHEREIN R2 H or OH, R3 H or halogen; WHEREIN R1 is OR -CH2NHCOO-R4 wherein R4 C1-C4 alkyl; R5 H, CH3 or C2H5, useful as active ingredients of pharmaceutical preparation; processes for their preparation; chemical intermediates useful in said preparation; and methods for the treatment of infectious diseases. |