Synthesis and Characterization of New Amino Acid‐Schiff Bases and Studies their Effects on the Activity of ACP, PAP and NPA Enzymes (In Vitro)

In this study, two new Schiff base compounds derived from the condensation reaction of L ‐glycine and L ‐tryptophan with 4‐methylbenzal‐dehyde have been synthesized. The Schiff base compounds were characterized by FT‐IR, UV and 1 H NMR spectroscopy. Their effects on the activity of total (ACP), prostatic (PAP) and non prostatic (NPA) acid phosphatase enzymes were studied. The Schiff base derived from L ‐glycine (A) demonstrated inhibition effect on the ACP and NPA activities and activation effect on PAP activity. The Schiff base derived from L ‐tryptophan (B) demonstrated semi fixed inhibition effects on the ACP and NPA activities at high concentrations (5.5×10 -2 , 5.5×10 -3 and 5.5×10 -4 M) and activator effect at low concentration (5.5×10 -5 M) while it was exhibits as activator on PAP activity.