Cyclic disulfides of n - mercapto acyl - cysteine - derivatives, processes for their preparation and pharmaceutical compositions containing same

摘要

PCT No. PCT/JP81/00235 Sec. 371 Date May 4, 1982 Sec. 102(e) Date May 4, 1982 PCT Filed Sep. 18, 1981 PCT Pub. No. WO82/01000 PCT Pub. Date Apr. 1, 1982.Pharmaceutically active compounds and pharmaceutically acceptable salts thereof having the following formulae IMAGE IMAGE IMAGE wherein A is a straight or branched chain alkylene group containing 1 to 3 carbon atoms; and R7 and R8 is each a lower alkyl group. These compounds are useful as the active component of pharmacological preparations.