Synthesis and Aldose Reductase Inhibitory Activity of N-Acylthiazolidinecarboxylic Acids

Various mono-and dithiazolidinecarboxylic acids were synthesized by acylation of (4R)-4-thiazolidinecarboxylic acids and tested for aldose reductase inhibitory activity in vitro. (2R, 4R)-3-(8-Carboxyoctanoyl)-2-(3-nitrophenyl)-4-thiazolidinecarboxylic acid (13) and (2R, 2'R, 4R, 4'R)-3, 3'-azelaoylbis [2-(3-nitrophenyl)-4-thiazolidinecarboxylic acid] (24) showed the most potent activity among them.