ACYCLIC ALIPHATIC BRANCHED ALKYL GROUPS AS CONSTITUENTS OF PROTECTIVE GROUPS BOUND TO SIDE CHAINS OF AMINO-ACID MOIETIES, AND THEIR USE IN THE PREPARATION OF PEPTIDE, POLYPEPTIDE OR PROTEIN STRUCTURES

摘要

A protective group bound to a side chain of an amino-acid moiety, which group is an aliphatic acyclic branched alkyl group protecting a thiol, hydroxyl, or carboxyl group or an aliphatic acyclic branched alkoxycarbonyl group protecting an amino group or heterocyclic nitrogen, wherein the alkyl and alkoxy entities have from 6 to 18 carbon atoms and have at least two identical alkyl chains, is described. Further, the use of such a protective group bound to a side chain of an amino-acid moiety in the synthesis of peptides, polypeptides and proteins is disclosed.