abstract |
Sweetening agents of formula: in which R is a heterocyclic group which, in a preferred embodiment, is a 2-cyanopyrid-5-yl or 2-cyanopyrimidin-5-yl group, A is O, S, NH or NCN, NH which can be salified under form of hydrochloride, n is 1 or 2, B is COOH or a sodium, potassium, ammonium, calcium or magnesium salt. |