| abstract |
NEW MATERIAL:The compound of formula I (R 1 and R 3 are H, halogen, CN, NO 2 , 1W6C alkyl, CO 2 R", etc.; R" are 1W4C alkyl; R 2 is O or S; n is 0W2; the structure of formula II containing the C labeled with * is L or DL isomer) and its salt. n EXAMPLE: N-(4-nitrophenylcarbamoyl)-α-L-aspartyl-4-chloroanilide. n USE: A sweetener. It has low calorific value, refreshing sweetness and high stability. n PREPARATION: The objective compound of formula I can be produced by reacting (A) an α-aspartyl-substituted anilide of α-glutamine-substituted anilide derived from aspartic acid or glutamic acid and a substituted aniline with (B) a substituted phenyl isocyanate or a substituted phenyl isothiocyanate. n COPYRIGHT: (C)1986,JPO&Japio |