3-L-(5-thioxo-L-prolyl)thiazolidine-4-carboxylic acid and derivatives therefrom, processes for the preparation thereof and pharmaceutical compositions containing them.

摘要

3-L-(5-thioxo-L-prolyl)thiazolidine-4-carboxylic acid and the derivatives thereof have valuable immunostimulating, antioxidant, antiradical and antiageing properties. They are prepared by thionating the corresponding 3-L-pyroglutamyl-L-thiazolidine-4-carboxylic acid derivatives or by condensing 5-thioxo-L-proline with the corresponding L-thiazolidine-4-carboxylic acid derivatives.