Identification and Characterization of 3-epi-Rotundone, a Novel Stereoisomer of Rotundone, in Several Kinds of Fruits.


A novel stereoisomer of rotundone, 3-epi-rotundone, was identified in the aroma of grapefruit, orange, apple, and mango. 3-epi-Rotundone was prepared by the isomerization of rotundone, and its structural elucidation was confirmed by comparing the 1D and 2D nuclear magnetic resonance and nuclear Overhauser effect spectroscopy spectra with those of rotundone… (More)
DOI: 10.1021/acs.jafc.7b01696


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