Specific eatable taste modifiers

A composition comprising an eatable having at least one taste selected from bitter and metallic, and at least one tastand in a substantially tasteless amount of about 0.0000001 to about 300% by weight, based on the weight of the eatable, which amount is sufficient to reduce said at least one bitter and metallic taste, said tastand being selected from the group consisting of compounds which are substantially tasteless in the amount used and have the structure:

• ##STR97## wherein r, 1, and m are 0 or 1;
• j and k are 0, 1, 2, or 3;
• each R.sup.2 and R.sup.3 which may be the same or different are independently selected from the group consisting of H, trifluoromethyl, halogen, cyano;
• and substituted or unsubstituted alkyl, alkylene, branched alkyl, branched alkylene, aryl, aralkyl, cycloalkyl, acyl, benzoyl, alkoxy, aryloxy, heterocyclic, polycyclic;
• each Y which may be the same or different is selected from the group consisting of N, O, and S;
• when r or m is 1 and Y is N, p or q are 2 or 3;
• when r or m is 1 and Y is N, p or q are 2 or 3;
• when r or m is 1 and Y is 0, p or q is 1;
• when r or m is 1 and Y is S, p is 1 or 2;
• A is selected from the group consisting of H, C.dbd.O, O.dbd.S.dbd.O, S.dbd.O, O.dbd.P(H)OH, O.dbd.P(OH).sub.2, and O.dbd.B(H)OH;
• Q is selected from the group consisting of H, trifluoromethyl, halogen, cyano;
• and substituted or unsubstituted alkyl, alkylene, branched alkyl, branched alkylene, aryl, aralkyl, cycloalkyl, acyl, benzoyl, alkoxy, aryloxy, heterocyclic, polycyclic;
• each R which may be the same or different when p>1 and each R' which may be the same or different when q>1 are independently selected from the group consisting of H, trifluoroacetyl;
• and substituted or unsubstituted alkyl, dialkyl, aralkyl, aryl, diaryl, acyl, cycloalkyl, benzoyl, alkyloxycarbonyl, aryloxycarbonyl, alkylaminocarbonyl, arylaminocarbonyl, amidines, alkylamidines, arylamidines, a monosaccharide, a disaccharide, a trisaccharide, an oligosaccharide, phosphorylated saccharides, arylacyl, alkylene, heterocyclic, polycyclic;
• and the following three structures V-2:
• ##STR98## wherein b is 0, 1 or 2, each Y which may be the same or different is selected from the group consisting of N, O, and S;
• when d is 1, b is O and Y is N, e is 2 or 3;
• when d is 1, b is O and Y is O, e is 1;
• f is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10;
• when d is 1, b is O and Y is S, e is 1 or 2;
• A is selected from H, C.dbd.O, O.dbd.S.dbd.O, S.dbd.O, O.dbd.P(H)OH or O.dbd.P(OH).sub.2, and O.dbd.B(H)OH;
• Q is selected from the group consisting of H, trifluoromethyl, halogen, cyano;
• and substituted or unsubstituted alkyl, alkylene, branched alkyl, branched alkylene, aryl, aralkyl, cycloalkyl, acyl, benzoyl, alkoxy, aryloxy, heterocyclic, polycyclic;
• R"' and Q together may form a cyclic structure;
• any of the R.sup.3 's and Q together may form a cyclic structure;
• any of the R.sup.3 's and R""s together may form a cyclic structure;
• and c is 0 or 1;
• Z and Z' are the same or different and are selected from OH, --O.sup.- X.sup.+, OR", NH.sub.2, NHR" and N(R").sub.2 ;
• R" is selected from alkyl, branched alkyl, aryl, aralkyl, alkaryl, cycloalkyl, substituted alkyl, substituted cycloalkyl, substituted aryl, substituted aralkyl and substituted alkaryl;
• R"' is selected from alkyl, branched alkyl, aryl, aralkyl, alkaryl, cycloalkyl, substituted alkyl, substituted cycloalkyl, substituted aryl, substituted aralkyl, substituted alkaryl, and an amino acid group;
• where CH--CH or CH.sub.2 --CH.sub.2 bonds exist the level of unsaturation may be increased by removing one or more hydrogen atoms from each carbon atom participating in the CH--CH or CH.sub.2 --CH.sub.2 bonds;
• X.sub.-.sup.+ is selected from H.sup.+ and physiologically acceptable cations and physiologically acceptable salts of all of the foregoing.