摘要:
The disclosure 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.
摘要:
The disclosure 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.
摘要:
The present invention relates to a pipecolic linker and its use as a solid-phase linker in organic synthesis. Said pipecolic solid-phase linker may be used for coupling functional groups chosen between primary amines, secondary amines, aromatic amines, alcohols, phenols and thiols. In particular, said pipecolic solid-phase linker may be used for peptide or pseudopeptide synthesis, such as the reverse N to C peptide synthesis or the retro-inverso peptide synthesis, or for the synthesis of small organic molecules.
摘要:
A method for identifying putative peptides of a given function from among nucleotide or peptide sequences of unknown function comprising the steps of: (i) obtaining a polynucleotide or polypeptide database; (ii) screening the database for the presence of a combination of nucleotides or amino acids indicative of the peptide of given function; (ii) identifying the polynucleotide or polypeptide sequences which comprise the combination of nucleotides or amino acids indicative of the peptide of given function.
摘要:
The invention relates to a new process for preparing active esters or carboxylic acids, which consists in reacting a carboxylic acid, in the presence of an agent for binding hydrohalic acid, with a carbonate of formula: ##STR1## in which R.sup.1 denotes either a radical of formula ##STR2## in which R.sup.3 and R.sup.4, which may be identical or different, are not hydrogen atoms and denote organic radicals which may be substituted or unsubstituted and saturated or unsaturated, and may be or may not be bound to a polymer, and which can be joined together to form a hetero-cyclic system with the nitrogen atom,or a substituted or unsubstituted aryl radical which may or may not be bound to a polymer,R.sup.2 denotes a hydrogen atom, an aliphatic or cycloaliphatic radical which may be substituted or unsubstituted and saturated or unsaturated, or a substituted or unsubstituted aromatic radical,and X denotes a halogen atom.This process is especially useful for the synthesis of active esters of N-protected amino acids. The invention also relates to the new carbonates described above and the method of producing them, which consists in reacting an alpha-halogenated chloroformate of formula:R.sup.2 --CHX--O--COClwith an alcohol of formula R.sup.1 OH in an inert solvent medium of the presence of an organic or inorganic base.
摘要:
The invention relates to the use of oligomers having constrained dipeptide or tripeptide motifs as agents for the vectorization of active ingredients.
摘要:
The invention relates to a protein cross-linking agent of the formula, where R1 is an aryl group optionally substituted once or several times by a grouping selected from the group consisting of hydroxy, C1-C4 alkyl, OBoc, SO3Na, Deu, and C1-C4 alkoxy groupings, R2 is N, (III), or (IV), n and in are identical or different integers between 0 and 10, p is an integer between 0 and 5, k is 0, 1, 2 or 3, and X and X′ are identical or different and are a reactive function of the proteins. The invention also relates to a method for the structural analysis of a protein or a protein complex.
摘要:
The invention relates to a dipeptide conjugate having general formula I, AA2-AA1-NH2, wherein A represent 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 peptides of general formula:R--A--Gly--Trp--B--Asp--NH.sub.2 (I)in which:Asp NH.sub.2 represents the amide in .alpha. position of the aspartic acid of formula: ##STR1## R represents hydrogen, a protector group of the terminal amine function such as t.butyloxy carbonyl (BOC), benzyloxy carbonyl (Z), lower alkanoyl,A designates:either tyrosine, tyrosine-O-sulfate, threonine or methionine;or a dipeptide selected from: --Ala--TYR--, --TYR--Thr--, --TYR Met--, TYR designating either of the 2 amino-acids tyrosine or tyrosine-O-sulfate;or a tripeptide selected from: --Glu--Ala--TYR--, Asp--TYR--Thr--, --Asp--TYR--MET--;or a tetrapeptide selected from: --Glu--Glu--Ala--TYR--, --Gln Asp--TYR--Thr--, --Arg--ASP--TYR--Met--;or a pentapeptide selected from: --Glu--Glu--Glu--Ala--TYR--, --Pyr--Gln--Asp--TYR--Thr--, --Asp--Arg--Asp--TYR--Met;B designates methionine, leucine or norleucine.
摘要:
The present invention provides novel triazole derivatives with improved receptor activity and bioavailability properties as ghrelin analogue ligands of growth hormone secretagogue receptors according to formula (I) that are useful in the treatment or prophylaxis of physiological and/or pathophysiological conditions in mammals, preferably humans, that are mediated by GHS receptors. The present invention further provides GHS receptor antagonists and agonists that can be used for modulation of these receptors and are useful for treating above conditions, in particular alcohol disorder, drug abuse, growth retardation, cachexia, short-, medium-, and/or long term regulation of energy balance, short-, medium-, and/or long term regulation (stimulation and/or inhibition) of food intake, intake of rewarding food, adipogenesis, adiposity and/or obesity, body weight gain and/or reduction, diabetes, diabetes type I, diabetes type II, tumor cell proliferation, inflammation, inflammatory effects, gastric postoperative ileus, postoperative ileus and/or gastrectomy (ghrelin replacement therapy).