Derivatives of 7-amino-2-dialkylaminoalkyl-1H-pyrrolo[3,4-c]pyridine-1,3(2H)-dione with effect against cataract

Derivatives of 7-amino-2-dialkylaminoalkyl-1H-pyrrolo[3,4-c]pyridine-1,3(2H)-dione with effect against cataract By: Bianchini, Pietro; Da Settimo, Federico Assignee: Farmigea S.p.A., Italy The title compds. (I; R,R2 = H, Me, Et; R1 = H, Cl; R3, R4 = Me, Et, Me2CH; NR3R4 = pyrrolidinyl, piperidinyl, N-methylpiperazinyl, morpholinyl, β-hydroxyethylpiperazinyl, etc.; n = 2,3) were prepd. Thus, 3-aminopyridine-4,5-dicarboxylic acid and H2NCH2CH2NEt2 were heated at 170° for 2 h to give II. II at 100 mg/kg orally in rats gave 35.17 inhibition of galactose-induced cataract formation