The invention provides a flavor compound according to formula (I), wherein R independently represents (-CH2-)x where x is an integer from 1 to 5, X independently represents S, NH or O, and R2 independently represents methyl or a C1 to C7 straight or branched alkyl or alkenyl group.
Identification of (<i>S</i>,<i>S</i>)-γ-Glutamyl-(<i>cis</i>-<i>S</i>-1-propenyl)thioglycine, a Naturally Occurring Norcysteine Derivative, from the Chinese Vegetable Toona sinensis
作者:Jia-Xiao Li、Kirk Eidman、Xian-Wen Gan、Olivier P. Haefliger、Patrick J. Carroll、Jana Pika
DOI:10.1021/jf401946d
日期:2013.8.7
the molecule and the novelty of the structure, the configuration was further confirmed by X-ray crystallography. Compounds 1 and 2 are the first examples of norcysteine-containing metabolites reported from nature. They may release thiols via cleavage of the amide bond by proteases, followed by spontaneous decomposition of the resulting unstable alk(en)yl norcysteine moiety.