Process for the preparation of N-alkylated dipeptides and their

Details Process for the preparation of N-alkylated dipeptides and their Process for the preparation of N-alkylated dipeptides and their

1984-04-26

1985-06-25

Phillips, Delbert R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C10352

Patent

active

045253013

ABSTRACT:
The invention relates to a process for the preparation of compounds of the formula I ##STR1## in which n is 1 or 2, R represents hydrogen, an aliphatic, cycloaliphatic, aromatic, araliphatic, cycloaliphatic-aliphatic radical or a radical OR.sup.a or SR.sup.2, in which R.sup.a denotes alkyl, aryl or heteroaryl, R.sup.1 denotes hydrogen, an aliphatic, cycloaliphatic-aliphatic, aromatic, araliphatic, heteroaromatic radical or an aminoacid side chain, R.sup.2 and R.sup.3 are identical or different and denote hydrogen, an aliphatic, cycloaliphatic, aromatic or araliphatic radical, and R.sup.4 +R.sup.5, together with the atoms carrying them, form a heterocyclic ring system, which comprises reacting trifluoromethanesulfonic acid derivatives of the formulae II or III with aminoacid esters of the formulae IV or V respectively. The invention also relates to compounds of the formula III and a process for their preparation.

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