| 摘要 |
A dipeptide sweetener, comprising a compound of formula (I), wherein X is H, Li, Na or K; n is 0, 1 or 2; m is 1, 2, 3 or 4; R is (1) OR1 wherein R1 is a C1-C7 alkyl group; a C2-C7 alkenyl or alkynyl group; or such an alkyl, alkenyl, or alkynyl group substituted with a C1-C4 alkoxyl group, a hydroxyl group, or a halogen atom with the proviso that no substitution occurs on C1 of R1; (2) N(R2)2 wherein each R2 independently represents H, an alkyl group containing at least 4 carbon atoms, or a 4-, 5- or 6-membered heterocyclic group containing one sulfur, oxygen, or nitrogen atom in the heterocyclic ring; or (3) R3 wherein R3 is R1 or -CH2R1; and R' is H, halogen, or phenyl; or a pharmaceutically acceptable acid addition salt thereof, is disclosed along with compositions containing the same. |
