Abstract: Compounds of the formula: ##STR1## and the pharmaceutically acceptable acid addition salts thereof, wherein; Y is halo, alkoxy, alkyl, or dialkylamino;a is 0, 1 or 2;b is an integer from 2-12 with the proviso that if b is 2 or 3 a cannot be 0; andX is selected from the group consisting of: --OH, OR.sup.1, --NH.sub.2, --NHR.sup.1, NR.sub.2.sup.1, ##STR2## and --NHCONHR.sup.2 in which each R.sup.1 is independently alkyl or cycloalkyl or in --NR.sub.2.sup.1, both R.sup.1 together are alkylene or form a piperazine ring optionally substituted at the ring N by alkyl or --CH.sub.2 CH.sub.2 OH; andR.sup.2 is alkyl, cycloalkyl, or optionally substituted phenyl;have antiinflammatory properties and are useful in the treatment of conditions characterized by inflammation and swelling.

Abstract: Compounds of the formula: ##STR1## and the pharmaceutically acceptable acid addition salts thereof, wherein: Z is S;Y is halo, alkoxy, alkyl, or dialkylamino;a is 0, 1 or 2;b is an integer from 2-12 with the proviso that if b is 2 or 3, a cannot be 0, and with the further proviso that if X is OH, b cannot be 2-5 and with the further proviso that if X is --NH.sub.2, b cannot be 2-5; andX is selected from the group consisting of: --OH, OR.sup.1, --NH.sub.2, --NHR.sup.1, NR1/2, ##STR2## and --NHCONHR.sup.2 in which each R.sup.1 is independently alkyl or cycloalkyl or, in --NR1/2, both R.sup.1 s together are alkylene or form a piperazine ring optionally substituted at the ring N by alkyl or --CH.sub.2 CH.sub.2 OH; andR.sup.2 is alkyl, cycloalkyl, or optionally substituted phenyl;have antiinflammatory properties and are useful in the treatment of conditions characterized by inflammation and swelling.

Abstract: The present invention concerns a new use of certain pyrrolo-pyrrole compounds of chemical formulas (A), (B), (C), and (D): ##STR1## for the treatment of microvascular complications associated with diabetes such as, for example, diabetic retinopathy, diabetic nephropathy and diabetic neuropathy. Pyrrolo-pyrrole compounds prevent development, restrain further progress and relieve symptoms of already developed microvascular complications of diabetes.