abstract |
(57) [Summary] (Modified) [Objective] To provide a Maillard reaction inhibitor and its active ingredient compound. [Structure] The Maillard reaction inhibitor of the present invention has the general formula The compound containing at least one compound selected from the compounds represented by or a salt thereof as an active ingredient. [In the formula, R 1 is H, a group —CH 2 —COOR b (R b is a lower alkyl group) and the like; R 2 is NH 2 and a group —N═R 4 (R 4 is isopropylidene, benzylidene and the like); R 3 is H, a lower alkyl group, a group —CH 2 —Het, a group —CH 2 —NH—C OOR 5 (R 5 is H, lower alkyl group, benzyl group, etc.), group —CH 2 —CO—R a (R a is an amino acid residue having an acid bond with carbonyl, NH-Het, etc.); S- or -N (R < 10 >)-(R < 10 > is H, group -CH < 2 >. -COOR b etc.); A is -CO- or = C (R < 11 >)-. (R 11 is a lower alkyl group, a pyridyl group, a cenyl group, (Substituted) phenyl group, etc .; Het is 5 to 6 membered N / S Shows an unsaturated heterocyclic ring] |