反应详情

Likewise, by following the procedure of Example 1 but replacing proline methyl ester hydrochloride with glycylglycine ethyl ester and replacing the "activated ester" N-{N-[2-(p-chlorophenoxy)-2-methylpropionyl]glycine} succinimido ester with an equivalent amount of the "activated ester", 2-(p-chlorophenoxy)-2-methyl-propionic acid succinimido ester, obtained in an analogous manner as the aforementioned "activated ester", N-{N-[2-(p-chlorophenoxy)-2-methylpropionyl]glycyl}glycine ethyl ester again is obtained.