Chemoenzymatic synthesis of aroma active 5, 6-dihydro-and tetrahydropyrazines from aliphatic acyloins produced by baker's yeast

T Kurniadi, RB Rhlid, LB Fay, MA Juillerat…

Index: Kurniadi, Toshinari; Bel Rhlid, Rachid; Fay, Laurent-Bernard; Juillerat, Marcel-Alexandre; Berger, Ralf Guenter Journal of Agricultural and Food Chemistry, 2003 , vol. 51, # 10 p. 3103 - 3107

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Citation Number: 7

Abstract

Twenty-five acyloins were generated by biotransformation of aliphatic aldehydes and 2- ketocarboxylic acids using whole cells of baker's yeast as catalyst. Six of these acyloins were synthesized and tentatively characterized for the first time. Subsequent chemical reaction with 1, 2-propanediamine under mild conditions resulted in the formation of thirteen 5, 6-dihydropyrazines and six tetrahydropyrazines. Their odor qualities were evaluated, ...