Structure–Taste Relationships of Aspartyl Tetrapeptide Esters
作者:Yasuo Ariyoshi
DOI:10.1246/bcsj.58.1727
日期:1985.6
A series of fourteen analogues of l-α-Asp–Gly–Gly–Gly–OMe has been synthesized in relation to structural features of sweet peptides. The rule in the structure-taste relationships of tripeptides barely applies to the aspartyl tetrapeptide esters. In order for the aspartyl tetrapeptide esters to be sweet, the second amino acid must have a d-configuration and a small, compact alkyl side chain. However, the sweetness was accompanied by a bitter or astringent taste. Moreover, some of the tetrapeptides were not sweet but bitter, though they satisfied the requirements for sweet peptides. With increasing length of a peptide, it becomes difficult to fit the deep receptor pocket.
Synthesis of Aspartyl Pentapeptide Esters in Relation to Structural Features of Sweet Peptides
作者:Yasuo Ariyoshi
DOI:10.1246/bcsj.59.1027
日期:1986.4
A series of seven analogues of aspartyl pentapeptides has been synthesized in relation to the structural features of sweet peptides. The rule in the structure-taste relationships of di-, tri-, and tetrapeptides is inapplicable to the pentapeptides. All the pentapeptides were devoid of sweetness, though they satisfied the requirements for sweet peptides. The result indicates that oligopeptides can not fit a deep receptor pocket. The mode of interactions between sweet peptides and the receptor is drawn schematically.