| abstract |
Novel mixed organic acid anhydrides having general formula (1), wherein R1 is the residue of an organic acid having anti-inflammotory, anti-epileptic, ACE-inhibiting, biocidal, cytostatic, diuretic, antidiarrheal or cerebrotonical activity, or of a steroid acid and R2 is different from R1 and represents a carbonhydrogen group, a steroid fragment or an amino acid or peptide moiety, and their pharmaceutically acceptable salts, which compounds are useful as prodrugs. The invention further relates to pharmaceutical compositions comprising such an anhydride. |