The present invention relates to novel compounds having sweet, salt or umami taste enhancement qualities. These compounds have the structure: where R 1 is H or methyl R 2 is selected from the group consisting of H, C1-C4 alkyl, alkenyl R 3 is selected from the group consisting of H, phenyl, C1-C10 straight or branched chain alkyl, alkenyl, alkynyl, alkyldienyl, acyclic or containing no more than one ring, which contains no more than a total of five heteroatoms selected from F, O, S, N, and P and if R 1 = H, R 2 and R 3 taken together can represent cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, or cyclohexenyl, which contains no more than two of each heteroatom selected from N, O, and S or if R 1 , R 2 and R 3 taken together can represent one, or two aromatic rings, which contain no more than three of each heteroatom selected from F, N, S, and O. R 4 is selected from the group consisting of H, methyl or ethyl R 5 is selected from the group consisting of H, methyl and ethyl R 6 is selected from the group consisting of H, C1-C9 straight or branched chain alkyl, alkenyl, alkyldienyl, acyclic or containing no more than one ring except for in the case of structure 1 when if R 4 = H or methyl and R 5 = H or methyl, R 6 as described above and phenyl or when R 4 , R 5 , and R 6 taken together can be equal to R 7 is selected from the group consisting C1-C4 alkyl, or alkenyl.
