Importance

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Abstract

A peptide of formula I (SEQ ID NO: 1): Lip-A-Gly-His-B-R (I) wherein: Lip is a lipoyl residue of R or S configuration; A is absent or is a lysine residue of configuration L or D; GIy is a glycine residue; His is a histidine residue of configuration L or D; B is a lysine residue of configuration L or D, or a lysine residue of configuration L or D in which the NH2 group of the side chain comprises a modification, wherein said modification is (i) a replacement with a hydrogen or (ii) a modification with a protecting group selected from the group consisting of acetyl, benzoyl, tosyl, sulfonyl benzene, benzyloxycarbonyle and palmitoyl; wherein R is O(Z) or N(Z′)(Z′), and wherein Z, Z′ and Z′ are independently of each other a hydrogen or a protecting group selected from the group consisting of methyl, ethyl, propyl, phenyl, hexyl, decyl and hexadecyl, or a racemate, an enantiomer or a diastereomer thereof, or a mixture thereof, or a salt thereof. A peptide of formula II (SEQ ID NO: 2): Lip-A-His-B-C-Trp-R (II) wherein: Lip is a lipoyl residue of configuration R or S; His is a histidine residue of configuration L; Trp is a tryptophane residue of configuration L; A is absent, is an amino acid residue of configuration L or D selected from the group consisting of a lysine residue, an alanine residue, a glutamic acid residue and a glycine residue, or is a spacer of formula: NH—(CH2)n-CO— wherein n is an integer comprised between 2 and 14; B is an aromatic amino acid residue of configuration D selected from the group consisting of a phenylalanine residue, a homophenylalanine residue, a tryptophane residue, a β-(1-Naphthyl)-alanine residue, a β-(2-Naphthyl)-alanine residue and a phenylglycine residue; C is a basic amino acid residue of configuration L selected from the group consisting of an arginine residue, a lysine residue, an ornithine residue and a homoarginine residue; wherein R is O(Z) or N(Z′)(Z′),

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First Claim