Tripeptides and sweetening agents containing the same

Abstract From the Canadian patent

Tripeptides of formula (I) and their salts wherein X is an amino acid residue linked at its, carboxyl group, to the amino group of L-aspartic acid through peptide bonding; Asp denotes an L-aspartic acid residue which is linked, at its amino group to, the amino acid residue X through peptide bonding and is connected, at its carboxyl group attached to the amino-substituted carbon atom, to the amino acid residue Y through peptide bonding; Y is an amino acid residue which is linked, at its amino group to Asp, through peptide bonding and is connected at its, carboxyl group, to an alcohol through ester bonding; OR is an alcohol residue linked, at its hydroxylgroup, to the amino acid residue Y …