Peptide sweeteners. 5. Side chain homologs relating zwitterionic and trifluoroacetylated amino acid anilide and dipeptide sweeteners

Abstract
Side-chain homologues of sweet trifluoroacetyl-.alpha.-L-aspartyl-p-cyanoanilide were synthesized and tasted. Removal of the trifluoroacetyl group only changes the potency of sweet taste, not the taste property. These results were compared with the structure-taste relationships of dipeptide sweeteners. An informative discontinuity of taste effect existed with novel aminomalonyl dipeptide derivatives. The results are explained on topochemical grounds.
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