Patent ID: 6900338

Claim:
A scavenger compound of the general formula I wherein X is a 4-10 membered ring; R 1 and R 2 are independently of each other an alkylene or alkenylene wherein said R 1 , R 2 or both may be unsubstituted or substituted by substituents selected from the group consisting of pyrrolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, pyrrolidinyl, pyrrolinyl, imidazolidinyl, imidazolinyl, pyrazolidinyl, pyridyl, pyrazinyl, pyridazinyl, indolyl, oxyindolyl, isoindolyl, indazolyl, indolinyl, 7-azaindolyl, isoindazolyl, quinolyl, isoquinolyl, naphthridinyl, cinnolinyl, quinazolinyl, pyridopyridyl, benzoxazinyl, quinoxadinyl, and carbolinyl; R 3 is carboxy, amido, alkanol, amino, carboxyalcohol, alkanediol, amine alcohol, amine dial, thio or amine carbonyl; R 4 is null, H or n and n′ are, independently, an integer from 0 to 8; D is CH 2 or NH; and Z is a 4-10 membered di sulfide ring or R 4 and its salts.