A process for the preparation of an aspartyl dipeptide amide L - A - D - amino acid.

摘要

Process for the preparation of an aspartyl dipeptide amide L - A - D - amino acid.Consists in: a) reacting carboxianhidrido tio n - L - aspartyl of formula (ii) with an amide of a d-amino acid of formula (iii) in the presence of Aqueous Solvent at basic pH, and then to produce the destiocarboxilacion acidify the resulting Intermediate; and (b) The dipeptid crystallize Or L - aspartate - D - amino acid of formula (i) with an Aromatic sulfonic acid of formula (iv)Where R is Hydrogen or hydroxyl; and is represented by groups of formula (V), where r, r, R and R is alkyl, C 1 to 4 and the remaining are Hydrogen or alkyl C 1 to 4; X is o, S, so, SO2 and other; M is 0, 1 2, 3 or 4; n, P and q are 0, 1, 2 or 3, with the condition that n is not greater than 3 b p; R is Chlorine and Hydrogen or Methyl; R is Hydrogen or Methyl.Have applications for its sweetening Properties.