Flavour Modulating Derivative of a Carboxylic Acid and a Purine, Pyrimidine, Nucleoside, or Nucleotide

Process of producing a process flavour preparation comprising heating a mixture of

• (i) a carbohydrate source;
• (ii) a nitrogen source, said nitrogen source comprising 0.5-100 wt %, of one or more amines represented by the formula NH2R, wherein R represents (a) a moiety comprising a six membered heterocyclic ring, comprising at least two nitrogen atoms, which heterocyclic ring is optionally further substituted with one or more substituents selected from the group of amino;
• hydroxyl;
• oxo;
• alkyl;
• ribose;
• deoxyribose;
• phosphate esters of ribose;
• and phosphate esters of deoxyribose:
• or (b) a moiety comprising a bicyclic fused ring system comprising a five membered heterocyclic ring and a six membered heterocyclic ring, each ring comprising at least two nitrogen atoms, and each ring being optionally further substituted with one or more substituents selected from the group of amino;
• hydroxyl;
• oxo;
• alkyl;
• ribose;
• deoxyribose;
• phosphate esters of ribose;
• and phosphate esters of deoxyribose;
• and
• (iii) one or more of carboxylic acids represented by formula (II) and/or salts thereof:
• wherein X represents
• hydrogen;
• branched or unbranched, aliphatic or cyclic C1-C12 alkyl or C1-C12 alkenyl, each optionally substituted with one or more substituents selected from the group of oxo, hydroxyl, amine, thiol, lower thioalkyl, lower alkoxyl, guanidine and saturated or unsaturated heterocyclic moieties;
• a moiety represented by the formula —Z-Phe, wherein Z represents a covalent bond or a branched or unbranched saturated or unsaturated C1-C6 alkylene optionally substituted with one or more substituents selected from the group of oxo, hydroxyl, amine, and lower alkoxyl and wherein Phe represents phenyl, optionally substituted with one or more substituents selected from hydroxyl, amine and lower alkoxyl;
• a moiety represented by the formula —Y—CO—NHR, wherein Y represents branched or unbranched saturated or unsaturated C1-C12, alkylene, optionally substituted with one or more substituents selected from the group of oxo, hydroxyl, amine, thiol, lower thioalkyl, lower alkoxyl and lower carboxyl;
• with the proviso that X does not represent a moiety wherein the α carbon atom is substituted with a hydroxyl group.