摘要:
The invention relates to a dipeptide conjugate having general formula I, AA2-AA1-NH2, wherein A represents the radical corresponding to a monocarboxylic acid with general formula II, HOOC-R, in which: R represents a linear or branched aliphatic radical at C1-C24, which is optionally substituted by a hydroxyl group and which can comprise one or more unsaturations, preferably between 1 and 6 unsaturations, and/or which can comprise a phenyl group or lipoic acid or the reduced form thereof, dihydrolipoic acid or N-lipoyllysine; and AA1 and AA2 represent identical or different amino acids which are selected from the group containing Ala, Asn, Cys, Gln, Gly, Ile, Leu, Met, Phe, Pro, Ser, Thr, Trp, Tyr, Val, Asp, Glu, Arg, His, Lys, Orn, Dap, Dab, the corresponding homo-amino acids and the corresponding beta-amino acids in the form of enantiomers or diastereoisomers and mixtures thereof, including racemic mixtures.
摘要:
The invention relates to a tripeptide conjugate having general formula I, A-AA1-AA2-AA3-NH2, wherein A represents the radical corresponding to a monocarboxylic acid with general formula II, HOOC-R, in which: R represents a linear or branched aliphatic radical at C1-C24, which is optionally substituted by a hydroxyl group and which can comprise one or more unsaturations, preferably between 1 and 6 unsaturations, lipoic acid or the reduced form thereof, dihydrolipoic acid, N- lipoyllysine, or phenylbutyric acid; and AA1, AA2 and AA3, which may be identical or different, represent independently of each other an amino acid selected from His, Phe, Ala, Arg, Lys, Orn, Trp, Nap, Tpi and Tic, on the condition that at least one of AA1, AA2 or AA3 represent Phe, preferably Dphe in the form of enantiomers or diastereoisomers and mixtures thereof, including racemic mixtures.
摘要:
The invention relates to a peptide of formula W-DPhe-Arg- Z (I) and to a conjugate thereof of a formula A-W-DPhe-Arg-Z (II), wherein A is a radical corresponding to a monocarboxylic acid of general formula HOOC-R (III), wherein R is an linear or branched possibly substituted by a hydroxy group aliphatic C1-C24 radical which can comprise one or several unsaturations, preferably from 1 to 6 unsaturations, a lipoic acid or the reduced form thereof, a dihydrolipoic acid, N-lipoyl-lysine or a phenylbutyric acid, W is His, Ala-His, Ala-Ala-His, Nle-Ala-His, DTrp-Ala-His, Nle-Trp-His, Lys, Ala-Lys, Nle-Ala-Lys, Orn, Ala-Orn, Nle-Ala-Orn, Ala, Nle-Ala-Ala, Arg, Ala-Arg, Nle-Ala-Arg, Nle-Ala-DTrp or a bond in case of compounds of formula (II), Z is NH2, OH and OR, wherein R is a linear or branched aliphatic C1-C24 radical, TrpNH2, NapNH2, TpiNH2, TicNH2, AlaNH2i TrpOH, NapOH, TpiOH, TicOH, AlaOH, PheNH2, or PheOH, exempting a peptidic conjugate for which A is a radical corresponding to an acetic acid, W is Nle-Ala-His and Z is TrpNH2 in the form of enantiomers or diastereoisomer and the mixtures thereof including racemic mixtures. The use of the inventive compounds for cosmetically fighting against canities is also disclosed.
摘要:
The invention relates to a method for the synthesis of a compound of the formula (I) in which: n is an integer higher than or equal to 1; Rb and each Rn are independently a hydrogen atom, a C1-C6 arylalkyl group or a C1-C6 alkyl group substituted or not by an aryl group, -COOH, C1-C6 -COO-(alkyl), -CONH2, - SH, heteroaryl, -NH2, -NHC(NH)(NH2), C1-C6 -S-(alkyl), -OH or phenol; Ra is a N-protective group; Rc is a ORd group in which Rd is a C1-C6 alkyl group or a NReRf group in which Re and Rf Re independently an N-protective group.
摘要:
The present invention relates to a supported oxidation reactant of formula (I): R-[Met(O)k]n-X- (I) in which: - R represents a hydrogen atom or an amine function-protecting group, -[Met(O)] represents an oxidized methionine residue of formula - k is 1 or 2 - represents a solid or soluble support used in organic synthesis, - X represents a radical derived from a function of the type amine or hydroxyl, or halogeno, capable of anchoring methionine, it being understood that this function capable of anchoring methionine can be separated from the support by means of a functionalized arm or a spacer, and - n is an integer greater than or equal to 1. The invention also relates to the use of a supported oxidation reactant of formula (I), for the formation of intramolecular disulfide bridges, in particular in peptides and/or proteins.
摘要:
The invention relates to novel peptide-silane "hybrid block" molecules, to the synthesis thereof and to the use of same for producing novel peptide-silica hybrid materials that can be used in various applications.
摘要:
The invention relates to a method for the synthesis of a compound of the following formula (I) in which: R1 and R2 are independently an N-protective group; R3 is a hydrogen atom, a C1-C6 alkyl group, a C1-C6 arylalkyl group, a C2-C6 alkenyl group, or a alkoxycarbonylalkyl group; Y is a -C(HR4)- group in which R4 is a hydrogen atom, a C1-C6 alkyl group, an aryl group, a C1-C6 arylalkyl group, or a C2-C6 alkenyl group; or an orthophenylene group.