METHOD FOR PRODUCING DIPEPTIDE DERIVATIVE CONTAINING DISUBSTITUTED AMINO ACID RESIDUE

摘要

A method for producing a dipeptide that has a protected N-terminal and is represented by formula (1) or a salt of the dipeptide, said method comprising condensing an ±-monosubstituted amino acid that has a protected N-terminal and is represented by formula (2) or glycine or a salt thereof with a disubstituted amino acid that is represented by formula (3) or a salt thereof in the presence of a condensing agent [in each of the formulae, substituents are as defined in the description or the like].