EP0776333A1 - Intermediaires d'antagonistes peptidiques de la neurotensine - Google Patents
Intermediaires d'antagonistes peptidiques de la neurotensineInfo
- Publication number
- EP0776333A1 EP0776333A1 EP95920948A EP95920948A EP0776333A1 EP 0776333 A1 EP0776333 A1 EP 0776333A1 EP 95920948 A EP95920948 A EP 95920948A EP 95920948 A EP95920948 A EP 95920948A EP 0776333 A1 EP0776333 A1 EP 0776333A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- formula
- radical
- compounds
- compound
- hydrogen atom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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- 101800001814 Neurotensin Proteins 0.000 title description 8
- 239000000543 intermediate Substances 0.000 title description 3
- 102000050267 Neurotensin Human genes 0.000 title 1
- 229940083963 Peptide antagonist Drugs 0.000 title 1
- 150000001875 compounds Chemical class 0.000 claims abstract description 109
- 150000003839 salts Chemical class 0.000 claims abstract description 32
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 11
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 11
- GRVDJDISBSALJP-UHFFFAOYSA-N methyloxidanyl Chemical compound [O]C GRVDJDISBSALJP-UHFFFAOYSA-N 0.000 claims abstract description 9
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Chemical compound BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims abstract description 7
- BLNWTAHYTCHDJH-UHFFFAOYSA-O hydroxy(oxo)azanium Chemical compound O[NH+]=O BLNWTAHYTCHDJH-UHFFFAOYSA-O 0.000 claims abstract description 7
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 6
- 229910052794 bromium Inorganic materials 0.000 claims abstract description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 4
- 239000001257 hydrogen Substances 0.000 claims abstract description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- -1 alkyloxy radicals Chemical class 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 25
- 238000002360 preparation method Methods 0.000 claims description 13
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 13
- ONDSBJMLAHVLMI-UHFFFAOYSA-N trimethylsilyldiazomethane Chemical compound C[Si](C)(C)[CH-][N+]#N ONDSBJMLAHVLMI-UHFFFAOYSA-N 0.000 claims description 8
- 125000000539 amino acid group Chemical group 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 5
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 claims description 5
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- 125000006239 protecting group Chemical group 0.000 claims description 5
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 4
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- 241000186361 Actinobacteria <class> Species 0.000 claims description 3
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- 239000004471 Glycine Substances 0.000 claims description 2
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- 238000002955 isolation Methods 0.000 claims description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 2
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- ASOKPJOREAFHNY-UHFFFAOYSA-N 1-Hydroxybenzotriazole Chemical compound C1=CC=C2N(O)N=NC2=C1 ASOKPJOREAFHNY-UHFFFAOYSA-N 0.000 description 10
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/18—Antipsychotics, i.e. neuroleptics; Drugs for mania or schizophrenia
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/08—Antiallergic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
- C07K5/04—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing only normal peptide links
- C07K5/10—Tetrapeptides
- C07K5/1002—Tetrapeptides with the first amino acid being neutral
- C07K5/1016—Tetrapeptides with the first amino acid being neutral and aromatic or cycloaliphatic
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
- C07K7/04—Linear peptides containing only normal peptide links
- C07K7/08—Linear peptides containing only normal peptide links having 12 to 20 amino acids
- C07K7/083—Neurotensin
Definitions
- the present invention relates to new compounds of formula
- R represents a hydroxy, alkyloxy, phenylalkyloxy or -NH-CH2-COOH radical
- R"' represents a hydrogen atom, bromine, chlorine or iodine or a nitro radical.
- radicals and alkyl and alkyloxy portions contain 1 to 4 carbon atoms in straight or branched chain
- Arg means arginine
- Lys means lysine
- Pro means proline
- Fmoc means 9-fluorenylmethoxycarbonyl
- Pmc means 2,2,5,7,8-pentamethylchroman-6-sulfonyl
- Boc means tert-butoxycarbonyl.
- the compound of formula (I) for which R, R 'and R "represent a hydroxy radical and R"' represents a hydrogen atom can be prepared by fermentation of actinomycetes A9738 (CBS 162.94) and isolation of the product.
- Fermentation takes place according to conventional fermentation processes.
- a culture medium comprising a peptone, a yeast extract, a meat extract, glucose, calcium carbonate, sodium chloride and agar is used as the culture medium.
- This fermentation is preferably carried out at a temperature between 25 and 30 ° C.
- the must is then extracted and the aqueous phase ultrafiltered and chromatographed several times.
- the compounds of formula (I) for which R represents an alkyloxy or phenylalkyloxy radical can be prepared by esterification of a corresponding compound of formula (I) for which R represents a hydroxy radical.
- This esterification is preferably carried out by the action of an alcohol R-OH for which R represents an alkyl or phenylalkyl radical, either in the presence of thionyl chloride according to the method described by ME JUNG et al., Tetrahedron Letters, 30 ( 32), 4211-4 (1989), either in the presence of gaseous hydrochloric acid or sulfuric acid, at a temperature between 0 and 25 ° C, or when R represents a benzyloxy radical, in the presence of paratoluene sulfonic acid according to the method described by TE WALKER et al., J. Org. Chem., 51, 1175-9 (1986).
- R-OH for which R represents an alkyl or phenylalkyl radical
- the compounds of formula (I) for which R represents a radical -NH-CH2-COOH can be prepared by the action of a compound of formula (I) corresponding for which R represents a hydroxy radical on glycine.
- ⁇ is particularly advantageous to use the compound of formula (I) in acti ⁇ form.
- activated form mention may be made of the reaction product of the compound of formula (I) with N-hydroxysuccinimide, N-hydroxybenzotriazole, 2- [1H-benzotriazol-1-yl] -l hexafluoromethylphosphate , 1,3,3-tetramethyluronium which can be prepared in an inert solvent such as an amide such as dimethylformamide, N-methylpyrrolidine-2-one, a chlorinated solvent such as chloroform or methylene chloride, an ether such as tetrahydrofuran or a mixture of these solvents, at a temperature of between 15 and 60 ° C., in the presence of 4A molecular sieve or of a condensing agent such as dcyclohexylcarixjdiimide or also an ester of pentafluorophenyl which can be prepared according to the method described by L. KISFA
- the condensation is generally carried out under the same conditions of temperature and reaction medium as those described above for the preparation of the activated form of the compound of formula (I) optionally in the presence of pyridine or of a amine such as dusopropylethylamine. These reactions can be carried out without isolating the activated product.
- the compounds of formula (I) for which R 'and R "represent methoxy radicals can be prepared by the action of a corresponding compound of formula (I) for which R' and R" represent hydroxy radicals on trimethylsilyldiazomethane.
- R represents an unprotected hydroxy radical
- a compound of formula (I) is obtained for which R, R 'and R "are methoxy radicals.
- This reaction is carried out in a lower aliphatic alcohol (methanol, ethanol for example), at a temperature in the region of 20 ° C.
- a lower aliphatic alcohol methanol, ethanol for example
- the compounds of formula (I) for which R '"represents a nitro radical can be prepared by nitration of a corresponding compound of formula (I) for which R'" re ⁇ has a hydrogen atom.
- This nitration is carried out by any known nitration method.
- the nitric acid is reacted, within acetic acid, at a temperature in the region of 20 ° C.
- the compounds of formula (I) for which R "'represents a chlorine atom can be prepared by chlorination of a corresponding compound of formula (I) for which R'" represents a hydrogen atom.
- This reaction is carried out by any known method of chlorination.
- the 2,3,4,5,6,6-hexachloro-2,4-cyclohexadiene-1-one is reacted in a mixture of dimethylformamide and carbon tetrachloride, at a temperature in the region of 20 ° C according to the method described by M. LEMAIRE et al., Janssen Chimica Acta, 5 (1), 3-8 (1987).
- the compounds of formula (I) for which R 1 "represents a bromine atom can be prepared by bromination of a corresponding compound of formula (I) for which R"'represents a hydrogen atom.
- This reaction is carried out by any known method of bromination.
- the bromine is reacted, in the presence of sodium acetate, within the acetic acid, at a temperature in the region of 20 ° C.
- the compounds of formula (I) for which R "′ represents an iodine atom can be prepared by iodization of a corresponding compound of formula (I) for which R" ′ represents a hydrogen atom.
- This reaction is carried out by any known method of iodination.
- an alkali metal iodide sodium or potassium iodide for example
- a reagent such as l, 2,4,6-tetrachloro-3, 6 ⁇ -diphenylglycouril, within 'A lower aliphatic alcohol such as methanol, at a temperature in the region of 20 ° C.
- the compounds of formula (I) for which R represents a hydroxy radical can optionally be converted into metal salts or into addition salts with nitrogenous bases according to methods known per se.
- These salts can be obtained by the action of a metal base (alkaline or alkaline earth, for example), ammonia, an amine or a salt of an organic acid on a compound of formula (I), in a solvent.
- the salt formed is separated by the usual methods.
- the compounds of formula (I) can optionally be transformed into addition salts with a mineral or organic acid by the action of such an acid within an organic solvent such as an alcohol, a ketone, an ether or a chlorinated solvent.
- organic solvent such as an alcohol, a ketone, an ether or a chlorinated solvent.
- salts there may be mentioned the addition salts with mineral or organic acids (such as acetate, trifluoroacetate, propionate, succinate, benzoate, fumarate, maleate, oxalate, methanesulfonate, isethionate, theophyllinacetate, salicylate, methylene- bis- ⁇ -oxynaphtoate, hydrochloride, sulfate, nitrate and phosphate), salts with alkali metals (sodium, potassium, lithium) or with alkaline earth metals (calcium, magnesium), ammonium salt, salts of nitrogenous bases (ethanolamine, trimethylamine, methylamine, piperidine, benzylamine, N-benzyl- ⁇ -phenethylamine, choline, arginine, leucine, lysine, N-methyl glucamine).
- mineral or organic acids such as acetate, trifluoroacetate, propionate, succinate, benzoate, fumarate,
- the compounds of formula (I) are particularly advantageous as intermediates for the preparation of active compounds as neurotensin antagonists of formula:
- R represents a hydroxy, alkyloxy, phenylalkyloxy or -NH-CH2-COOH radical
- Rj represents a hydrogen atom, an adamantylacetyl, adamantylcarbonyl, norbornylacetyl, norbornylphenoxycarbonyl, benzoyl, nicoti- nucleus, 4-phenylbenzoyl, 4-tert radical -butylbenzoyl, 2-pyrrolidinecarbonyl or a group protecting an amino function
- R2 represents an Arg or Lys residue
- R3 represents an Arg or Lys residue
- R4 represents a Pro residue
- m, n and p, identical or different, represent a number equal to 0 or 1, it being understood that when Rj represents a hydrogen atom the sum m + n + p is at least equal to 1,
- R5 and R5 are identical and represent a hydroxy or methoxy radical and R7 represents a d atom hydro ⁇ gene,
- each amino acid residue can be in the L or D configuration.
- the peptide compounds of formula (H) for which the sum m + n + p is at least equal to 1 can be prepared by the action of a compound of formula (I) on a derivative of formula:
- the condensation of the product of formula (I) on the activated product of formula (III) generally takes place under the same conditions of temperature and reaction medium as those described above for the preparation of the activated form of the derivative of formula ( lu) optionally in the presence of pyridine or an amine such as diisopropylethylamine. These reactions can be done without isolating the activated product.
- the preferred resins are 4-hydroxymethylphenoxymethyl-copolystyrene 1% divinylbenzene resins (HMP, Applied Biosystems, WANG, J. Amer. Chem. Soc., 95, 1328, (1973)), chlorotritylchloride-polystyrene-1% divinylbenzene copolymer (Novabio - chem).
- HMP 4-hydroxymethylphenoxymethyl-copolystyrene 1% divinylbenzene resins
- WANG J. Amer. Chem. Soc., 95, 1328, (1973)
- chlorotritylchloride-polystyrene-1% divinylbenzene copolymer Novabio - chem.
- the possible deprotection of the terminal amino function can be carried out according to the usual techniques of deprotection of amines such as those described by TW GREENE, Protective Groups in Organic Synthesis, John Wiley, New York.
- the possible deprotection of the carboxy function can be carried out by any method known to a person skilled in the art making it possible to switch from a carboxylic ester function to a carboxy function.
- the operation is carried out in an inert solvent such as dioxane, water or a mixture of these solvents, in the presence of lithine, at a temperature in the region of 0 ° C.
- Rj represents a hydrogen atom or a group protecting an amino function
- Rj represents a hydrogen atom or a group protecting an amino function
- Rj represents a hydrogen atom or a group protecting an amino function
- Ri represents a group protecting the amino function
- Ri represents a group protecting the amino function
- Ri represents a group protecting the amino function
- Rj represents a radical 9-fluorenylmethoxycarbonyl
- a compound of formula (I) is reacted with 9-fluorenylmethyl and N-succinyl carbonate.
- This reaction is generally carried out in an inert solvent such as dioxane, in the presence of an aqueous solution of sodium carbonate, at a temperature in the region of 20 ° C.
- an inert solvent such as dioxane
- Ri represents a tert-butoxycarbonyl, acetyl, pivaloyl or benzyloxycarbonyl radical, the phenyl of which is optionally substituted by halogen, alkyl, alkyloxy or nitro
- a compound of formula (I) is reacted with a derivative R ⁇ ⁇ Cl in which Ri represents a radical tert-butoxycarbonyl, acetyl, pivaloyl or benzyloxycarbonyl in which the phenyl is optionally substituted by halogen, alkyl, alkyloxy or nitro.
- This reaction is preferably carried out in an inert solvent such as dimethylformamide, in the presence of a base such as a trialkylamine (diisopropylethylamine for example), at a temperature in the region of 20 ° C.
- a base such as a trialkylamine (diisopropylethylamine for example)
- the compounds of formula (II) for which m + n + p is equal to zero and represents an adamantylacetyl, adamantylcarbonyl, norbomylacetyl, norbomylphenoxy ⁇ carbonyl, benzoyl, nicotinoyl, 4-phenylbenzoyl, 4-tert-butylbenzoyl, 2-pyrrolidinecarbonyl radical be prepared by the action of a compound of formula (I) on a chloride Ri-Cl in which Ri represents an adamantylacetyl, adamantylcarbonyl, norbomylacetyl, norbomylphenoxycarbonyl, benzoyl, nicotinoyl, 4-phenylbenzoyl, 4-tert-butylbenzoyl, 2-pyrrolidinecarbon radical .
- This reaction is preferably carried out in an inert solvent such as dimethylformamide, in the presence of a base such as a trialkylamine (di-iscprOpylethylamine for example), at a temperature in the region of 20 ° C.
- a base such as a trialkylamine (di-iscprOpylethylamine for example), at a temperature in the region of 20 ° C.
- the compounds of formula (II) can be purified by the usual known methods, for example by chromatography or extraction.
- the compounds of formula (II) can optionally be transformed into addition salts with a mineral or organic acid by the action of such an acid within an organic solvent such as an alcohol, a ketone, an ether or a chlorinated solvent.
- organic solvent such as an alcohol, a ketone, an ether or a chlorinated solvent.
- salts there may be mentioned the addition salts with mineral or organic acids (such as acetate, trifluoroacetate, propionate, succinate, benzoate, fumarate, maleate, oxalate, methanesulfonate, isethionate, theophyllinacetate, salicylate, memylene) bis- ⁇ -oxynaphtoate, hydrochloride, sulfate, nitrate and phosphate), salts with alkali metals (sodium, potassium, lithium) or with alkaline earth metals (calcium, magnesium), ammonium salt, salts of nitrogenous bases (ethanolamine, trimethylamine, methylamine, piperidine, benzylamine, N-benzyl- ⁇ -phenethylamine, choline, arginine, leucine, lysine, N-methyl glucamine).
- mineral or organic acids such as acetate, trifluoroacetate, propionate, succinate, benzoate, fumarate,
- the compounds of formula (II) have interesting pharmacological properties. These compounds are neurotensin antagonists and are therefore useful for treating or preventing disorders associated with neurotensin.
- these compounds can be used for the treatment or prevention of psychoses, anxiety disorders, depression, cognitive disorders, neurodegeneration, panic attacks, Parkinson's disease, dementia. 'Alzheimer's, schizophrenia, autism, tardive diskynesia, irritable bowel syndrome, acute pancreatitis, ulcers, disorders of intestinal motility, certain tumors sensitive to neurotensin, in the withdrawal from chronic treatment and abuse of alcohol or drugs, allergic and inflammatory phenomena, cardiovascular and respiratory disorders and asthma.
- the affinity of the compounds of formula (II) with respect to neurotensin was measured by their capacity to displace the binding of tritiated neurotensin to its receptors present in a crude membrane preparation of the guinea pig cerebral cortex. The test is based on that described by M. GOEDERT et al., Brain Research, 304, 71-81 (1984): male Dunkin-Hartley guinea pigs (200-300 g) are sacrificed by decapitation and the brain quickly removed. All the following steps are carried out at 4 ° C.
- the cerebral cortex is dissected, weighed and homogenized in 5 ml of Tris-HCl buffer (50 mM, pH 7.4) per gram of tissue with a polytron (force 6 for 15 seconds). The homogenate is centrifuged at 48,000 g for 15 minutes and the pellet obtained washed twice in the same buffer. The final pellet is homogenized in 3 ml of buffer per gram of initial tissue and kept in the form of aliquots (approximately 20 mg of protein per ml) at -80 ° C until use. The protein content is measured according to the method of BRADFORD, Anal. Biochem., 72, 248-254 (1976).
- the binding test is carried out in 50 mM Tris-HCl buffer, pH 7.4, containing 0.4% bovine serum albumin and 0.1 mM bacitracin in the presence of 0.15 mg of proteins per ml and 0, 8nM of [3H] neurotensin for 15 minutes at 25 ° C.
- Nonspecific binding is determined in the presence of 1 ⁇ M of neurotensin 1-13.
- the reaction is stopped by filtration and the radioactivity retained on the filter measured by scintillometry.
- the products are studied in range of concentrations in order to determine the inhibitory concentration of 50% of the specific binding.
- the compounds of formula (I) have in this test an IC50 of less than 15 ⁇ M.
- the compounds of formula (II) have a low toxicity compatible with their use as an active ingredient in medicaments.
- the amino acid residues of the macrocyclic residues of the compounds of formulas (I) and (II) are called X-TYR1 (N-terminal amino acid); X-ILE2; X-TYR3 and X-TYR4 (C-terminal amino acid).
- the amino acid residues in the chain are called R followed by the name of the amino acid and its position in the chain.
- a 250 ml medium containing 5 g / l of peptone, 5 g / l of yeast extract, 15 g / l of glucose, 5 g / l of meat extract, 3 g / l of calcium carbonate, 5 g / 1 of sodium chloride and 1 g / 1 of agar is inoculated with an inclined agar of actinomycetes A9738 (CBS 162.94) in the form of a suspension of spores.
- CBS 162.94 inclined agar of actinomycetes A9738
- the fermenter is stirred at 300 rpm, aerated at 5 m ⁇ / h and thermostatically controlled at 28 ° C for 44 hours.
- the entire culture is then transferred sterile to a production fermenter with 450 liters of sterilized medium for 40 minutes at 122 ° C (distillers 5 g / 1, beans 40 g / 1, glucose 5 g / 1, soybean oil 10 g ⁇ , sodium chloride 5 g / 1 and cobalt chloride 20 mg / 1) then maintained at a temperature of 28 ° C for 94 hours, with stirring at 250 1 min and aerated at a rate of 15 n /.
- the must (487 liters, pH 7.8) is then stirred with 5% clarcel marketed by CECA and then filtered to separate the mycelium from the filtrate.
- the filtrate (300 liters) is extracted with 2 times 100 liters of ethyl acetate and the aqueous phase (250 liters) is ultrafiltered by an ultrafiltration membrane whose cut-off threshold is 20 kD until a volume is obtained. of 40 liters.
- the ultrafiltrate (210 liters) is percolated on a stainless steel column (20x60 cm) containing 30 liters of Duolite S861 resin sold by Rhom and Haas with a flow rate of 301 h.
- the column is rinsed with 80 liters of water then the chromatography is carried out by a gradient by methanol-water level with a flow rate of 301 / h and fractions of 10 liters (50/50 by volume for fractions 1 and 2, 60 / 40 by volume for fractions 3 to 8, 80/20 by volume for fractions 9 and 10 and 100% methanol for fractions 11 and 12).
- Fractions 3 to 6 are combined, methanol is removed under reduced pressure (3.4 kPa) then the aqueous phase is lyophilized. 12.4 g of a yellow powder are thus obtained.
- This lyc ⁇ hilisate is disintegrated with 600 ml of methanol cooled to 4 ° C, the insoluble material is discarded and the solution is concentrated under reduced pressure (3.4 KPa) to give 4 g of dry extract.
- This extract is dissolved in 110 ml of a methanol-water solution (1/10 by volume) and chromatographed on a stainless steel column (5 ⁇ 60 cm) filled with C18 Matrex grafted silica (20 ⁇ , 60,) sold by Amicon at l using a GELSON system. The 50 ml fractions are collected with a Pharmacia fraction collector and the flow rate is 50 ml / minute.
- the gradient profile used is as follows: in 30 minutes, linear gradient of methanol-water 10/90 in volumes to 40/60 in volumes, plateau of 30 minutes in 40/60 in volumes then linear gradient of 40/60 in volumes at 100% methanol in 40 minutes.
- Fractions 21 to 29 are combined and concentrated under reduced pressure (3.4 kPa) to a volume of 10 ml. This solution is placed at the top of a glass column (5x30cm) filled with SC6 Macherey Nagel polyamide. The elution is carried out with water. 50 fractions of variable volumes (20 to 70 ml) are collected.
- fractions 13 to 25 are combined and placed on a glass column 5 cm in diameter and containing 250 ml of DEAE Biogel A (Bio-Rad) . Elution is carried out with water. The first 900 ml of effluent and eluate are discarded and the desired product is then eluted with 2 liters of water. These 2 liters are percolated on a 75 ml international Analytichem reservoir (2.5 cm internal diameter) containing 40 ml of Cl 8 Bondesil 40 ⁇ grafted silica sold by Analytichem International. The effluent is discarded and the product is eluted with methanol.
- X-TYR1 NH2 7.92; HA 4.78; HB1, HB2 3.01; 3.17; HD1 7.09; HD2 6.74; HE1 6.82;
- X- ILE 2 NH 8.63; HA 4.19; HB 1.62; MG1 0.82; HG21, HG22 1.18, 1.48; MD 0.79;
- X-TYR 3 NH 8.73; HA 3.58; HB1, HB2 2.42, 2.62; HD1 6.51; HD2 5.50;
- X-TYR 4 NH 4.22; HA 4.45; HB1, HB2 3.21; 3.39 ; HD1 7.12, HD2 7.36; HE1 7.58; HE2 6.82; OCH 3 3.81].
- This mixture is deposited on a column 4 cm in diameter containing 150 g of silica gel and eluted with the ethyl acetate-acetic acid-water mixture (103-12-10 by volume), collecting 100 ml fractions. .
- the fractions between 900 and 2400 ml are combined and concentrated to dryness to give 734 mg of an ocher-colored solid.
- This solid is taken up in 20 ml of water and 100 ml of ethyl acetate, warmed to a temperature in the region of 40 ° C, then cooled to a temperature in the region of 20 ° C, before being filtered, washed with 3 ml of water, then with three times 20 ml of ethyl acetate. It is dried under reduced pressure (30 Pa) at 40 ° C, to obtain 387.7 mg of compound of formula (I) for which R, R 'and R "represent 14
- the filtrate is extended to 15 ml and then added with water (85 ml).
- the solution is subjected to a high performance liquid chromatography with a column of octadecyl grafted silica (250 ⁇ 10 mm) at a flow rate of 3.5 ml / minute. Elution is carried out using a linear gradient of water 0.07% trifluoroacetic acid to acetonitrile-water (70/30 by volume) 0.07% trifluoroacetic acid. 1.7 ml fractions are collected. Those containing the desired product are combined and evaporated under reduced pressure.
- the Fmoc-Arg-Pro-OH peptide can be synthesized in solid phase, using an “Fmoc synthesis strategy on an Applied Biosystems 431A device using the" standard Fmoc "cycles supplied by the manufacturer with N-methylpyrrolidine-2- one as solvent.
- the deprotection of the alpha-amine functions is carried out by a 20% piperidine solution in N-methylpyrrolidine-2-one for 20 minutes at each synthesis step.
- the peptide is synthesized on 0.25 mmol of WANG resin (J. Am. Chem. Soc, 95, 1328 (1973)) 4-hydoxymethylphenoxymethyl-copolystyrene 1% divinylbenzene (HMP, Applied Biosystems).
- the symmetrical anhydride of Fmoc-Pro-OH (lmmol) is formed by reaction for 20 minutes with 0.5 mmol of dicyclohe- ⁇ lcarbodiimide in 1.3 ml of N-methylpyrrolidine-2-one and 1.8 ml of dichloromethane. After 13 minutes of reaction, 0.36 ml of 0.1 M dimethylaminopyridine in dimethylformamide are added. After removal of the dicyclohexylurea formed by filtration, the symmetrical anhydride is reacted for 30 minutes with the resin. The amino function of praline is deprotected by reaction for 20 minutes with a 20% solution of piperidine in N-methylpyrrolidine-2-one.
- the N-hydroxybenzotriazolyl ester of Fmoc-- rg (Pmc) -OH is formed by reaction of 1 mmol of Fmoc-Arg (Pmc) -OH in 4.1 ml of N-methylpyrrolidine-2-one in the presence of 1 mmol of N-hydroxybenzotriazole and 1 mmol of dicyclohexylcarbodiimide for 20 minutes. After elimination of the dicyclohexylurea formed, the ester is reacted for 30 minutes with the resin. A resin is thus obtained on which the Fmoc-Arg (Pmc) -Pro group is grafted.
- the peptide is cleaved from the resin by treatment for 1 hour and 30 minutes in 10 ml of trifluoroacetic acid, 0.75 g of phenol, 0.25 ml of ethanediethiol, 0.5 ml of thioanisole and 0.5 ml of water per 100 mg of peptidyl-resin. After removal of the resin by filtration, the liquid phase is concentrated on a rotary evaporator for 30 minutes under reduced pressure (4 kPa). The peptide is then precipitated by addition of tert-butyl methyl ether and petroleum ether (4/1 by volume) and re- recovered by centrifugation.
- the peptide is taken up in a minimum volume of trifluoroacetic acid, precipitated by adding a mixture of tert-butyl methyl ether and petroleum ether (4/1 by volume) and recovered by centrifugation, this operation is repeated twice. The peptide is then washed with 30 ml of a mixture of tert-butylmethyl ether and petroleum ether (4/1 by volume), recovered by centrifugation and dried under vacuum (4 kPa). The peptide is used as it is for the following stages of the synthesis.
- the synthesis of the Fmoc-Arg-Arg-Pro-OH peptide is carried out as described for the Fmoc-.A-rg-Pro-OH peptide in Example A.
- a resin onto which an Fmoc-Arg group has been grafted beforehand (Pmc) -Pro as described in Example A is deprotected from its protective group Fmoc by 20% piperidine in N-methylpyrrolidine-2-one for only 3 minutes to limit the formation of a corresponding diketopiperazine derivative.
- the resin is washed extensively with N-methylpyrrolidine-2-one.
- the N-hydroxybenzotriazolyl ester of Fmoc-Arg (Pmc) -OH is formed by reaction of 1 mmol of Fmoc-.Arg (Pmc) -OH in 2.1 ml of N-methylpyrrolidine-2-one, 1 ml of 1M N-hydroxybenzotriazole in N-methylpyrrolidine-2-one and 1 ml of 1M dicyclohexylcartiodiimide in N-methylpyrrolidine-2-one for 20 minutes. After elimination of the dicyclohexylurea formed, this ester is reacted for 30 minutes with the grafted resin.
- a resin is thus obtained on which the Fmoc-Arg (Pmc) -Arg (Pmc) -Pro group is grafted.
- the Fmoc-Arg-Arg-Pro-OH peptide is cleaved from the resin and purified in the same way as Fmoc-Arg-Pro-OH.
- This solid is purified by high performance liquid chromatography on a LiChroprep diol (MERCK) column 2.5 cm in diameter and 31 cm in length, eluting at a flow rate of 10 ml per minute, first with 200 ml of the dichloromethane-ethanol mixture (95/5 by volume), then 200 ml of the dichloromethane-ethanol mixture (93/7 by volume).
- MERCK LiChroprep diol
- R-Fmocl HAI, HA2 4.20, 4.32; HB 4.32; aromatic 7.83; 7.28; 7.48; 7.88; R-PRO2: HA 4.22; HB1 , HB2 1.74, 2.08; HG1, HG2 1.78, 1.95; HD1, HD2 3.28, 3.35; X-TYR1: NH 7.62; HA 4.71; HB1, HB2 2 , 91; 3.06; HD1 6.89; HD2 6.84; HE1 6.68; X-ILE2 - NH 7.95; HA 4.15; HB 1.62; MG1 0.82; HG21, HG22 1.12, 1 , 47; MD 0.79; X-TYR3: NH 8.24; HA 3.62; HB1, HB2 2.46; 2.70; HD1 6.62; HD2 5.52; X-TYR4: NH 4, 22; HA 4.26; HB1, HB2 3.10,
- the elution is carried out using a linear gradient from water-trifluoroacetic acid (100 / 0.07 by volume) to water-acetonitrile-trifluoroacetic acid (63/37 / 0.07 by volume), in 33 minutes. 3 ml fractions are collected.
- the mixture is stirred for 6 hours and 30 minutes at this same temperature.
- the solvents are evaporated under reduced pressure (15 Pa).
- the residue is taken up in 5 ml of dichloroethane and washed twice with 1 ml of water, twice with 1 ml of a 0.1 M solution of sodium monophosphate, twice with 1 ml of a solution 0 25 M sodium hydrogen carbonate and twice 1 ml of water.
- the organic phase is concentrated under reduced pressure (5.3 kPa).
- the residue is taken up in 2 ml of aqueous trifluoroacetic acid (95/5 by volume) at a temperature in the region of 20 ° C for 1 hour and 30 minutes.
- Example F 37 mg of the compound described in Example F are dissolved in 0.6 ml of dioxane, 0.3 ml of water and 0.3 ml of 1M lithine solution, at a temperature in the region of 0 ° C. After 70 minutes of stirring at a temperature in the region of 0 ° C., it is diluted with 10 ml of aqueous acetic acid (10/90 by volume), and the crude is injected onto a preparative column of high performance liquid chromatography of grafted silica Octadecyl Bio-Rad RSL 100 ⁇ 30 cm long and 1 cm in diameter.
- the elution is carried out using a linear gradient of water-trifluoroacetic acid (100 / 0.07 by volume) to water-acetonitrile-trifluoroacetic acid (65/35 / 0.07 by volume), in 30 minutes.
- the fractions containing the desired product are joined, frozen at -80 ° C.
- the solid phase synthesis is carried out using material from the company Shandon (Life Science International group) with the exception of the rotator for hemolysis tubes.
- the resin is confined in 3 ml solid phase extraction syringes made of high density polyethylene (PE-HD) fitted with Teflon filters. These syringes are mounted on a two-way teflon valve and closed with a disposable PE-HD fin stopper.
- the syringes are shaken on a rotator for hemolysis tubes.
- the washing and filtration operations are carried out on a solid phase extraction workstation (vacuum enclosure provided with luer tips, Shandon).
- the synthesis is carried out on 50 ⁇ mol of resin in Fmoc chemistry.
- Amino aci ⁇ couplings are carried out by treating the resin for 1 hour by 250 ⁇ mol of the amino acid suitably protected in the presence of 250 ⁇ mol of 2- (1H-benzotriazole-1- yl) -1, 1, 3,3-tetramethyluronium hexafluorophosphate, 250 ⁇ mol of N-hydroxybenzotriazole and 750 ⁇ mol of d ⁇ sopropylethylamine in 1.2 ml of an N-memylpyrrolidme-2-one-dimethylformamide mixture (1/1 by volume).
- the Fmoc group is deprotected by 3 successive treatments of the resin during 1 minute, 1 minute and 20 minutes respectively, with 2 ml of a "20% by volume piper ⁇ dine solution in N-methylpyrrolidine-2-one.
- the peptide is then cleaved by reaction in 10 ml of a trifluoroacetic acid-phenol-ethanedithiol-thioanisole-water mixture (40/3/1/2 / 2 by volume) for 90 minutes.
- the resin is removed by filtration.
- the filtrate is concentrated under reduced pressure by means of a rotary evaporator equipped with a membrane pump and a dry-ice trap for 1 hour, the temperature of the bath being maintained at 45 ° C.
- the final volume of the concentrate is approximately 1 ml.
- the product is precipitated by adding 15 ml of methyl tert-butyl ether and collected by centrifugation.
- the pellet is dissolved in 1 ml of trifluoroacetic acid, precipitated by adding 15 ml of methyl-tert-butyl ether and then washed with 15 ml of a methyl-tert-butyl ether-petroleum ether mixture (2/1 by volume) in presence of 0.2 ml of trifluoroacetic acid.
- the product is dried under reduced pressure (3.5 kPa), then purified by high performance liquid chromatography on a Ci8 100 ⁇ column (250 x 10 mm, Bio-Rad), eluting with a gradient from 20 to 40 % acetonitrile containing 0.07% by volume of trifluoroacetic acid in the water contained 0.07% by volume of trifluoroacetic acid at a flow rate of 6 ml / minute, in 30 minutes, then lyophilized.
- the dicyclohexylurea formed is then filtered through a 0.45 ⁇ m Millex HV filter (Millipore) and the filtrate is added to a solution containing 100 mg (162 ⁇ mol) of the compound of formula (I) for which R "'represent atoms of hydrogen, R, R 'and R "represent hydroxy radicals and 0.025 ml (143 ⁇ mol) of diisopropylethylamine in 2.5 ml of dimé ⁇ ylformamide. The reaction is carried out for 24 hours at a temperature in the region of 20 ° C.
- the solvent is removed using a Speed Vac centrifugal evaporator (Savant) equipped with a vane pump for 18 hours at a temperature in the region of 20 ° C.
- the residue is dissolved in 20 ml of dichloromethane and the solution extracted successively with 2 times 4 ml of distilled water, 2 times 4 ml of a solution of 0.1 M sodium dihydrogen phosphate in distilled water and 2 times 4 ml of distilled water.
- the compound of formula (II) is thus obtained for which represents Boc--- g (benzyloxycarbonyl) 2-Arg (benzyloxycarbonyl) 2-Pro-, R, R5 and R represent hydroxy radicals and R7 represents a hydrogen atom in solution in dichloromethane.
- This solution is divided into three equal parts which are dried. One of these parts is dissolved in 2 ml of a dichloromethane-methanol mixture (1/1 by volume). To this solution is added 100 mg of 10% palladium on charcoal and 100 mg of ammonium formate. The reaction is carried out for 100 minutes with periodic stirring with a vortex. The reaction medium is then filtered through a 0.45 ⁇ m Millex HV filter (Millipore) and the filter washed with 5 ml of methanol. The solvent is evaporated under reduced pressure (2.6 kPa, 45 ° C, 30 minutes).
- the product is finally purified by high performance liquid chromatography on a Ci8 100 ⁇ column (250x10 mm, Bio-Rad), eluting with a gradient of 15 to 40% acetonitrile containing 0.07% trifluoroacetic acid (by volume) in water containing 0.07% trifluoroacetic acid (by volume) at a flow rate of 6 ml / minute in 30 minutes, then lyophilized.
- the Boc-Arg (benzyloxycarbonyl) 2-Arg (benzyloxycarbonyl) 2-Pro-OH peptide can be prepared in the following way: the Boc-Arg (benzyloxycarbonyl) 2-OH compound is reacted with methyl prolinate in the presence of 2- (1H-benzotriazole-1-yl) - 1,1,3,3-tetramethyluronium hexafluorophosphate in acetonitrile or dimethylforamamide using diisopropylethylamine as base to obtain a pH greater than 8, the Boc group is then cleaved with 40% trifluoroacetic acid in dichloromethane.
- Boc-Arg (benzyloxycarbonyl) 2-OH is reacted with this product, in the presence of 2- (1H-benzotriazole-1-yl) -l, l, 3,3-tetramethyluronium hexafluorophosphate in acetonitrile or dimethylformamide using d ⁇ so ⁇ propylethylamine as a base to obtain a pH greater than 8.
- the ester obtained can then be saponified with lithine, at a temperature in the region of + 4 ° C.
- the suspension obtained is frozen at -80 ° C and then lyophilized (96 hours).
- the product is dissolved in 1 ml of dimethylformamide containing 0.0625 ml of diisopropylethylamine (0.36 mmol).
- 50 ⁇ l (50 ⁇ mol) of a 1-adamantylacetic acid chloride solution are then added (obtained by reaction of 38.8 mg (200 ⁇ mol) of 1-adamantylacetic acid with 17.2 ⁇ l (200 ⁇ mol) of oxalyl chloride in 200 ⁇ l of dichloromethane in the presence of a drop of dimethylformamide, for 15 minutes at a temperature in the region of 20 ° C) with the peptide solution and the reaction is carried out at a temperature in the region of 20 ° C , for 1 hour.
- the solvent is then removed thanks to 25
- the product is finally purified by high performance liquid chromatography on a Cl8 100 A column (250 x 10 mm, Bio-Rad), eluting with a gradient of 15 to 40% of acetonitrile containing 0.07% of trifluoroacetic acid (by volume) in water containing 0.07% trifluoroacetic acid (by volume), at a flow rate of 6 ml / minute in 30 minutes, then lyophilized.
- the product obtained is dissolved in 1 ml of dimethylformamide containing 62.5 ⁇ l of diisopropylethylamine (0.36 mmol). Then added 9.9 mg (50 ⁇ mol) of 1-adamantylcarboxylic acid chloride to the peptide solution and the reaction is carried out at a temperature in the region of 20 ° C for 1 hour. The solvent is then removed using a Speed Vac (Savant) centrifugal evaporator equipped with a vane pump for 18 hours at a temperature in the region of 20 ° C. The residue is dissolved in 2 ml of a dichloromethane-methanol mixture (1/1 by volume) then added with 100 mg of palladium on carbon at 10% and 100 mg of ammonium formate.
- Savant Speed Vac
- the reaction is carried out for 150 minutes with periodic vortexing.
- the the reaction medium is then filtered through a 0.45 ⁇ m Millex HV filter (Millipore) and the filter washed with 5 ml of methanol.
- the solvent is evaporated under reduced pressure.
- the product is finally purified by high performance liquid chromatography on a Cl8 100 ⁇ column (250 x 10 mm, Bio-Rad), eluting with a gradient of 18 to 43% of acetonitrile containing 0.07% of trifluoroacetic acid ( by volume) in water containing 0.07% trifluoroacetic acid (by volume), at a flow rate of 6 ml per minute in 30 minutes and then lyophilized.
- the solvent is removed using a Speed Vac centrifugal evaporator (Savant) equipped with a vane pump for 18 hours at a temperature in the region of 20 ° C.
- the residue is then taken up in 5 ml of a trifluoroacetic acid-phenol-ethanedi-thiol-thioanisole-water mixture (40/3/1/2/2 by volume) and left to react for 90 minutes, at a temperature close to 20 ° C, with stirring.
- the mixture is then concentrated on a RC10-10 centrifugal evaporator (Jouan) equipped with a vane pump for 45 minutes (temperature of the evaporation chamber 50 ° C, trapping of vapors at -90 ° C).
- the concentrate obtained (approximately 1 ml) is added with 15 ml of a tert-butyl methyl ether petroleum mixture (1/1 by volume) to precipitate the peptide.
- the precipitate is collected by centrifugation and solubilized with 1 ml of trifluoroacetic acid. The precipitation operation is repeated 1 time.
- the peptide is dried under reduced pressure (3.5 kPa).
- the product is finally purified by high performance liquid chromatography.
- the compound Fmoc-Arg (Pmc) -Arg (Pmc) -Pro-OH can be prepared as follows: an Fmoc-Pro-chlorotrityl resin is obtained by treating 0.3 mmol of chlorotritylchloride-polystyrene copolymer resin divinylbenzene (Novabiochem) with 1 mmol of Fmoc-proline in 3.5 ml of a dichloromethane-isopropylethylamine mixture (6/1 by volume) for 30 minutes at a temperature in the region of 20 ° C. 2 ml of methanol are then added and the reaction is allowed to continue for 30 minutes at a temperature in the region of 20 ° C. The resin is then washed successively with 3 times 5 ml of methanol and 3 times 5 ml of dichloromethane and dried.
- the Fmoc-Arg (Pmc) -Arg (Pmc) -Pro-OH peptide is assembled on an Applied Biosystems 431A device using "standard Fmoc" cycles, supplied by the manufacturer, using N-methylpyrrolidine-2-one as solvent.
- the deprotection of the alpha-amino functions is carried out with 20% piperidine in N-methylpyrrolidine-2-one for 20 minutes at each stage of the synthesis.
- the Fmoc-Pro-chlorotrityl resin is deposited in the reactor of the apparatus.
- the N-hydroxybenzotriazolyl ester of Fmoc-Arg (Pmc) is formed by reaction of 1 mmol of Fmoc - Arg0 TM mc) -OH in 2.1 ml of N -methylpyrrolidine-2- one, 1 ml of 1M N-hydroxybenzotriazole in N-methylpyrrolidine-2-one and 1 ml of 1M dcyclohexylcarbcdiimide in N-methylpyrrolidine-2-one for 20 minutes. After elimination of the dicyclohexylurea formed, the ester is reacted for 30 minutes with the resin.
- the solvent is then removed using a Speed Vac centrifugal evaporator (Savant) equipped with a vane pump for 18 hours at a temperature in the region of 20 ° C.
- the residue is then taken up in 10 ml of a trifluoroacetic acid-phenol-ethanedithiol-thioanisole-water mixture (40/3/1/2/2 by volume) and left to react for 90 minutes at a temperature in the region of 20 ° C with stirring.
- the mixture is then concentrated on a RC10-10 centrifugal evaporator (Jouan) equipped with a vane pump for 45 minutes (temperature of the evaporation chamber 50 ° C, trapping of vapors at -90 ° VS).
- the concentrate obtained (approximately 2 ml) is added with 30 ml of a tert-butylmethyl ether-petroleum ether mixture (1/1 by volume) to precipitate the peptide.
- This pep ⁇ tide is collected by centrifugation. It is dissolved in 2 ml of trifluoroacetic acid and the precipitation operation is repeated 1 time.
- the peptide is dried under reduced pressure (3.5 kPa).
- the product is finally purified by high performance liquid chromatography on a Ci8 100 ⁇ column (250 x 10 mm, Bio-Rad), eluted with a gradient of 22 to 47% acetonitrile containing 0.07% acid trifluoroacetic (by volume) in water containing 0.07% trifluoroacetic acid (by volume), at a flow rate of 6 ml / minute, in 30 minutes, then lyophilized.
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- General Health & Medical Sciences (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Genetics & Genomics (AREA)
- Biophysics (AREA)
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- Biomedical Technology (AREA)
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- Neurosurgery (AREA)
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- Immunology (AREA)
- Hospice & Palliative Care (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Peptides Or Proteins (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9406166A FR2720065B1 (fr) | 1994-05-20 | 1994-05-20 | Métabolite de fermentation d'actinomycètes A 9738 intermédiaire pour la préparation d'antagonistes de la neurotensine. |
| FR9406166 | 1994-05-20 | ||
| PCT/FR1995/000642 WO1995032217A1 (fr) | 1994-05-20 | 1995-05-17 | Intermediaires d'antagonistes peptidiques de la neurotensine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0776333A1 true EP0776333A1 (fr) | 1997-06-04 |
Family
ID=9463377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95920948A Withdrawn EP0776333A1 (fr) | 1994-05-20 | 1995-05-17 | Intermediaires d'antagonistes peptidiques de la neurotensine |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5747303A (fr) |
| EP (1) | EP0776333A1 (fr) |
| JP (1) | JPH10500571A (fr) |
| AU (1) | AU2619495A (fr) |
| FR (1) | FR2720065B1 (fr) |
| IL (1) | IL113766A0 (fr) |
| WO (1) | WO1995032217A1 (fr) |
| ZA (1) | ZA954025B (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2720066B1 (fr) * | 1994-05-20 | 1996-06-28 | Rhone Poulenc Rorer Sa | Peptides antagonistes de la neurotensine. |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5162497A (en) * | 1987-09-24 | 1992-11-10 | The Administrators Of The Tulane Educational Fund | Bradykinin analogs with non-peptide bond |
| US5430047A (en) * | 1994-04-07 | 1995-07-04 | Warner-Lambert Company | Neurotensin antagonists |
-
1994
- 1994-05-20 FR FR9406166A patent/FR2720065B1/fr not_active Expired - Lifetime
-
1995
- 1995-05-17 ZA ZA954025A patent/ZA954025B/xx unknown
- 1995-05-17 EP EP95920948A patent/EP0776333A1/fr not_active Withdrawn
- 1995-05-17 IL IL11376695A patent/IL113766A0/xx unknown
- 1995-05-17 JP JP7530093A patent/JPH10500571A/ja active Pending
- 1995-05-17 WO PCT/FR1995/000642 patent/WO1995032217A1/fr not_active Ceased
- 1995-05-17 US US08/737,697 patent/US5747303A/en not_active Expired - Fee Related
- 1995-05-17 AU AU26194/95A patent/AU2619495A/en not_active Abandoned
Non-Patent Citations (3)
| Title |
|---|
| Gesellschaft Deutscher Chemiker 24, Hauptversammlung;Kurzreferate und Teilnehmerverzeichnis,Hamburg 5-11 September 1993,pages 496-497 * |
| Gesellschaft fuer biotechnologische Forschung mbh,Wissenschaftlicher Ergebnisbericht,1991 page 68 * |
| See also references of WO9532217A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| IL113766A0 (en) | 1995-08-31 |
| US5747303A (en) | 1998-05-05 |
| WO1995032217A1 (fr) | 1995-11-30 |
| FR2720065B1 (fr) | 1996-06-28 |
| JPH10500571A (ja) | 1998-01-20 |
| ZA954025B (en) | 1996-03-06 |
| FR2720065A1 (fr) | 1995-11-24 |
| AU2619495A (en) | 1995-12-18 |
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