GB2097404A - A process for the preparation of lysine-tryptophan oligopeptides and of their physiologically-useful derivatives and salts - Google Patents
A process for the preparation of lysine-tryptophan oligopeptides and of their physiologically-useful derivatives and salts Download PDFInfo
- Publication number
- GB2097404A GB2097404A GB8211276A GB8211276A GB2097404A GB 2097404 A GB2097404 A GB 2097404A GB 8211276 A GB8211276 A GB 8211276A GB 8211276 A GB8211276 A GB 8211276A GB 2097404 A GB2097404 A GB 2097404A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lis
- lysine
- tryptophan
- general formula
- salts
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 150000003839 salts Chemical class 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 102000015636 Oligopeptides Human genes 0.000 title claims description 14
- 108010038807 Oligopeptides Proteins 0.000 title claims description 14
- 150000001875 compounds Chemical class 0.000 claims abstract description 21
- 108090000765 processed proteins & peptides Proteins 0.000 claims abstract description 13
- 125000003277 amino group Chemical group 0.000 claims abstract description 9
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 125000003588 lysine group Chemical group [H]N([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])(N([H])[H])C(*)=O 0.000 claims abstract description 6
- 239000004472 Lysine Substances 0.000 claims abstract description 5
- 125000006242 amine protecting group Chemical group 0.000 claims abstract description 5
- 125000005454 tryptophanyl group Chemical group 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 125000003710 aryl alkyl group Chemical group 0.000 claims abstract description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 3
- 125000002877 alkyl aryl group Chemical group 0.000 claims abstract 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 15
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 13
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 10
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 10
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 10
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 6
- QIVBCDIJIAJPQS-VIFPVBQESA-N L-tryptophane Chemical compound C1=CC=C2C(C[C@H](N)C(O)=O)=CNC2=C1 QIVBCDIJIAJPQS-VIFPVBQESA-N 0.000 claims description 6
- QIVBCDIJIAJPQS-UHFFFAOYSA-N Tryptophan Natural products C1=CC=C2C(CC(N)C(O)=O)=CNC2=C1 QIVBCDIJIAJPQS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 5
- 125000001584 benzyloxycarbonyl group Chemical group C(=O)(OCC1=CC=CC=C1)* 0.000 claims description 4
- 239000012442 inert solvent Substances 0.000 claims description 4
- 238000003379 elimination reaction Methods 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 238000007127 saponification reaction Methods 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
- 125000006239 protecting group Chemical group 0.000 claims 1
- 239000012047 saturated solution Substances 0.000 claims 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract description 2
- 238000006386 neutralization reaction Methods 0.000 abstract description 2
- OBMZMSLWNNWEJA-XNCRXQDQSA-N C1=CC=2C(C[C@@H]3NC(=O)[C@@H](NC(=O)[C@H](NC(=O)N(CC#CCN(CCCC[C@H](NC(=O)[C@@H](CC4=CC=CC=C4)NC3=O)C(=O)N)CC=C)NC(=O)[C@@H](N)C)CC3=CNC4=C3C=CC=C4)C)=CNC=2C=C1 Chemical compound C1=CC=2C(C[C@@H]3NC(=O)[C@@H](NC(=O)[C@H](NC(=O)N(CC#CCN(CCCC[C@H](NC(=O)[C@@H](CC4=CC=CC=C4)NC3=O)C(=O)N)CC=C)NC(=O)[C@@H](N)C)CC3=CNC4=C3C=CC=C4)C)=CNC=2C=C1 OBMZMSLWNNWEJA-XNCRXQDQSA-N 0.000 abstract 1
- 101710176384 Peptide 1 Proteins 0.000 abstract 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 15
- 238000004458 analytical method Methods 0.000 description 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 238000005481 NMR spectroscopy Methods 0.000 description 7
- -1 hydrogen halides Chemical class 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 235000018977 lysine Nutrition 0.000 description 5
- 238000004611 spectroscopical analysis Methods 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical compound C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 235000001014 amino acid Nutrition 0.000 description 4
- 150000001413 amino acids Chemical class 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000006188 syrup Substances 0.000 description 4
- 235000020357 syrup Nutrition 0.000 description 4
- OISVCGZHLKNMSJ-UHFFFAOYSA-N 2,6-dimethylpyridine Chemical compound CC1=CC=CC(C)=N1 OISVCGZHLKNMSJ-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 229960001760 dimethyl sulfoxide Drugs 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- CHDFNIZLAAFFPX-UHFFFAOYSA-N ethoxyethane;oxolane Chemical compound CCOCC.C1CCOC1 CHDFNIZLAAFFPX-UHFFFAOYSA-N 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 239000012074 organic phase Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 235000002906 tartaric acid Nutrition 0.000 description 2
- 239000011975 tartaric acid Substances 0.000 description 2
- NTNKNFHIAFDCSJ-UHFFFAOYSA-N (2-nitrophenyl) thiohypochlorite Chemical compound [O-][N+](=O)C1=CC=CC=C1SCl NTNKNFHIAFDCSJ-UHFFFAOYSA-N 0.000 description 1
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- XWKFPIODWVPXLX-UHFFFAOYSA-N 2-methyl-5-methylpyridine Natural products CC1=CC=C(C)N=C1 XWKFPIODWVPXLX-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000000010 aprotic solvent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- QYRFJLLXPINATB-UHFFFAOYSA-N hydron;2,4,5,6-tetrafluorobenzene-1,3-diamine;dichloride Chemical group Cl.Cl.NC1=C(F)C(N)=C(F)C(F)=C1F QYRFJLLXPINATB-UHFFFAOYSA-N 0.000 description 1
- PZOUSPYUWWUPPK-UHFFFAOYSA-N indole Natural products CC1=CC=CC2=C1C=CN2 PZOUSPYUWWUPPK-UHFFFAOYSA-N 0.000 description 1
- RKJUIXBNRJVNHR-UHFFFAOYSA-N indolenine Natural products C1=CC=C2CC=NC2=C1 RKJUIXBNRJVNHR-UHFFFAOYSA-N 0.000 description 1
- NIQQIJXGUZVEBB-UHFFFAOYSA-N methanol;propan-2-one Chemical compound OC.CC(C)=O NIQQIJXGUZVEBB-UHFFFAOYSA-N 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 102000004196 processed proteins & peptides Human genes 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000006340 racemization Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-M toluene-4-sulfonate Chemical compound CC1=CC=C(S([O-])(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-M 0.000 description 1
- 125000002088 tosyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C([H])([H])[H])S(*)(=O)=O 0.000 description 1
- ILWRPSCZWQJDMK-UHFFFAOYSA-N triethylazanium;chloride Chemical compound Cl.CCN(CC)CC ILWRPSCZWQJDMK-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C07K5/08—Tripeptides
- C07K5/0815—Tripeptides with the first amino acid being basic
-
- 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
- C07K5/06—Dipeptides
- C07K5/06086—Dipeptides with the first amino acid being basic
-
- 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
- C07K5/1019—Tetrapeptides with the first amino acid being basic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Genetics & Genomics (AREA)
- Biochemistry (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Life Sciences & Earth Sciences (AREA)
- Peptides Or Proteins (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Abstract
A process for the preparation of ologopeptides constituted by lysinyl and tryptophanyl residues characterised by the following general formula (1): (Lys)a(Trp)b 1 wherein Lys represents a lysinyl residue, Trp represents a tryptophanyl residue, a>o and b>o with the sole condition that when the peptide link, -CONH-, has originated through the amino group of the lysine, that the amino group be that in the alpha position to the carboxyl which gives rise to the formation of said link is carried out in three stages. Firstly, a compound of general formula 2 is reacted with a compound of general formula 3, <IMAGE> in which R1 and R2 independently represent beta -methylenidole or epsilon - aminobutyl with the -NH2 group protected or any residue of any peptide sequence (Lys)c-(Trp)d (wherein c and/or d>o) with the condition that at least one of R1 and R2 is a residue of beta -methylenidole or protected epsilon -aminobutyl, and R3 is an alkyl aryl or arylalkyl group, whereby to obtain the compound of the general formula 4 shown below: <IMAGE> Secondly, the o-nitrosulphenyl group is eliminated and replaced by a hydrogen atom. Thirdly, the resultant amino-ester is treated to remove any amine-protecting groups and is then optionally saponified, followed by neutralization, to give the free peptide 1. Physiologically useful derivatives or salts may then be formed therefrom.
Description
SPECIFICATION
A process for the preparation of lysine-tryptophan oligopeptides and of their physiologicallyuseful derivatives and salts
This invention refers to a process for the preparation of oligopeptides constituted by lysinyl and tryptophanyl residues characterised by the following general formula (1): (Lis) - (Trpl) wherein Lis represents a lysinyl residue, Trp represents a tryptophanyl residue, a > o and b > o; said general formula being understood to cover all possible combinations of sequences that can be formed with these aminoacids of both the dseries and the / series or with all the possible sequential combinations possible of the d series and of the / series, with the sole condition that when the peptide link. --CONHH-, has originated through the amino group of the lysine, that the amino group be in the a position to the carboxyl which gives rise to the formation of said link.
The invention also extends to the physiologically-useful derivatives and salts of those compounds of general formula 1 and especially to those that facilitate possible therapeutic action.
The process according to the present invention is characterised by the three following stages:
Stage 1: Reaction of a compound of general formula 2 with a salt of a compound of formula 3, preferably a hydrochloride or a p- toluenesulphonate in an inert aprotic solvent such as tetrahydrofuran, acetonitrile, N,N-dimethylformamide or mixture of these solvents, in the presence of an aprotic base such as triethylamine, N-methylmorpholine, 2,6-lutidine, etc., for 1 to 2 hours.
where R, and R2 independently represent a /3-methylenindole
or E-aminobutyl group where the E-amino group is protected by a group P (PHN-CH2)3-CH2-) which represents any normal amine-protecting group of aminoacid and protein chemistry, such as substituted carbobenzyloxy, carbotert-butyloxy, trytyl, tosyl, etc., or any residue of any peptide sequence (Lis)c(Trp)d (wherein c > o and/or d > o), with the sole condition that at least one of R1 and R2 is a residue of p-methylenindole or protected E-aminobuWl, and R3 represents an alkyl, aryl or arylalkyl group.
Thus a compound of general formula 4 is obtained without the occurrence of any racemization at all:
wherein R1, R2 and R3 are as noted above.
Compounds of general formula 2 may be obtained by the reaction of o-nitrophenylsulphenyl chloride with Leuch anhydrides (N-carboxy anhydrides of a-aminoacids or peptides) according to the procedure described by H. R. Kricheldorf,Angew. Chem 85, 86 (1973), Chem. Ber. 107 3553 (1974) and R. Kataki, J. Org. Chem. 40 (19), 2697 (1975).
Stage 2: Reaction under gentle conditions of the compound of general formula 4 with any of the reagents known in the literature for the elimination of the o-nitrosulphenyl group, such as thioles in nonaqueous inert solvents, hydrogen halides in dilute dioxane solution at low temperatures, tAO , etc.
When hydrogen halides are used the minimum reaction time must be employed (the reaction is generally instantaneous) and the process of isolating the product must be rapidly proceeded with due reasons of the reactivity of o-nitrosulphenyl chlbride in an acid medium towards the residues of tryptophan present in the peptide.
In this way the compound of general formula 5, is obtained in the form of the hydrohalide if HCI or
HBr/dioxane is used as reactant:
where R1, R2 and Rs have the meaning noted previously.
Stage 3: Treatment of the compound of general formula 5, obtained in Stage 2 under an atmosphere of nitrogen or in the presence of an antioxidant, with any of the reactants habitually used in peptide and aminoacid chemistry for the elimination of amine-protecting groups, such as hydrogen on various catalysts in suitable solvents, hydrogen halides in acetic acid, etc.Thus an ester derived from the product of general formula 1 is obtained which by means of treatment with a base in an inert solvent in accord with the normal methods of organic chemistry for ester saponification followed by the neutralization of the previous alkaline solution, preferably by passing said solution through an acid ionexchange column, leads to the free peptide comprising the amioacids lysine and tryptophan and of the following general formula 1: (Lis), -- (Trp), The following methyl ester, 1-Lis-1-TrpOMe, derived from the compound of general formula 1, in which a = b = 1, has already been previously described in its mono- and di-hydrochloride form by M.
Szekerke, J. Erchegyi and J. Sagi Acta chim. Acad. Sci. Hung. 80. 193 (1 974), nevertheless, the procedure described for its synthesis is different.
The yields obtained in all the reactions are good ( > 90%), no racemisation at all occurring.
The following examples illustrating the process to which this invention refers are not to be considered to be limiting. In all of same the following abbreviations are utilized: NPS, NCA and Z, which have those meanings indicated below, these abbreviations being those that are universally and habitually used in aminoacid and peptide chemistry to indicate the groups that they represent and which are widely known to specialists in the field.
NPS = o-nitrophenylsulphenyl NCA = a-N-carboxy-anhydride Z = Carbobenzyloxy
EXAMPLE 1 HCl. 1-Lis-1-TrpOMe 1. NPS-E-Z-1-Lis-1-TrpOme 38.29 of methyl-1-tryptophanate hydrochloride is suspended in 300ml of dry tetrahydrofuran and then 21 ml of triethylamine is added, the triethylamine hydrochloride formed then being filtered off. To the filtrate is added 72.6g NPS-E-Z-1-Lis-NCS and the mixture is agitated for two hours. The solution is evaporated under reduced pressure, bath temperature not exceeding 350C, leaving a residue which is dissolved in 600ml of ethyl acetate, washed successively with 5% aqueous tartaric acid solution, 5% sodium bicarbonate and water.The organic phase is dried over sodium sulphate, and evaporated in vacuo to ieave a thick syrup which is used in the following stage and whose identity and structure are determined by spectroscopy and analysis.
NMH (dimethylsulphoxide -d6, ) 7-8.5 (m, 14.5 of indol, 5 group Z, 4NPS): 5.1(5.2 CH2 group Z);3A(5.3, CO2 CH3)
Analysis:
Calculated for C32H35N507S: C, 60.65%; H, 5.56%;
N, 11.05%; S, 5.04%
Found C, 61.03%; H, 5.89%
N, 10.88% S, 5.29% 2. HCL. E-Z-1-Lis-1-TrpOMe 88.3g of the NPS E-Z-1-Lis-1-TrpOMe obtained previously is dissolved in 350ml of a 1 N solution of hydrogen chloride dissolved in dioxane cooled to -50C. The solution is then evaporated to dryness under reduced pressure to give a gummy residue which solidifies on treatment with benzene and agitation and whose structure is determined by spectroscopy and analysis NMR (dimethylsulphoxide-d6, ) 5.1 (S, 2CH2 group Z); 3.5 (S, 3, CO2CH3).
Analysis:
Calculated for C26H33N405C1.2H20: C, 56.47%; H, 6.69% N, 10.13%; CI, 6.42%
Found C, 56.28%; H, 6.90%;
N, 9.97%; Cl, 6.68%
3. HCL. 1-Lis-1-TrpOMe
A solution of 8g HCI. E-Z-1.Lis.TrpOMe, obtained from the previous stage, in 40ml acetic acid saturated with hydrogen chloride is heated at 1 000C for 1 hour under a nitrogen atmosphere. The
solution is evaporated to dryness in vacuo to give a syrup which is washed with acetone and which then
takes on a gummy consistency.Although crystallisation was not possible, its identity was confirmed
based on spectroscopy and it showed analogous rotation powers as described in the bibliography; [a] = +8 (C = 1.5 H20); [ai bibliography = +6.2 (C = 1.1 H20).
EXAMPLE 2
HCI. 1-Lis-1-Lis-1-TrpOMe
1. NPS-E-Z-1-Lis-E-Z-1-Lis-1-TrpOMe 62g of HCI. E-Z-1-Lis-1-TrpOMe obtained from the above example, is suspended in 600ml dry tetrahydrofuran and 1 6.8my triethylamine is added. The precipitate formed is filtered off and to the
filtrate is added 50.4g NPS-E-Z-1-Lis-NCA. The mixture is agitated for 2 hours at room temperature. The
solution is evaporated to dryness under reduced pressure and the residue is dissolved in ethyl acetate (2
litres), and washed successively with aqueous solutions of tartaric acid 5% and sodium bicarbonate 5%,
and water.
The organic phase is dried over sodium sulphate and the ethyl acetate solution once dry is
evaporated to dryness in vacuo, to give a gummy residue solidified by treatment with hexane to give an
amorphous solid characterised by NMR spectroscopy and analysis: NMR (dimethylsulphoxide -d6, ) 7-8.5 (m, 19; 5 indol, 1 OZ groups, 4NPS); 5,1 (5.4, CH2 Z groups); 3.5 (S, 3, CO2 CH3).
Analysis:
Calculated for C46H53H7010S: C, 61.67%; H, 5.92%;
N, 10.94%; S, 3.57%
Found C, 61.48% H, 6.16% N, 10.69%; S, 3.72% 2. HCI E-Z-1-Lis-E-Z-1-Lis-1-TrpOMe NPS-E-Z-1-Lis-E-Z-1-Lis-1-TrpOMe obtained from the previous stage (102 g) is dissolved in a 1 N solution of hydrogen chloride in dioxane cooled to -50C. The solution is then evaporated to dryness under reduced pressure to give a thick syrup which is solidified by the addition of ethyl ether. The solid is washed with ether and crystallized from tetrahydrofuran-ethyl ether, mp. 120-121 .
Analysis:
Calculated for C40H51N608CI.2H20; C, 58.93%; H, 6.70%
N, 10.31%; CI, 4.35%
Found C, 58.59%; H, 6.31%
N, 10.27%; Cl, 4.72% 3. HCl. 1-Lis-1-Lis-1-TrpOMe HCI. E-Z-1-Lis-E-Z-1-Lis-1-TrpOMe, obtained from the previous stage, in a solution in acetic acid saturated with hydrogen chloride (300 ml) is heated for one hour at 1 000C under a nitrogen atmosphere. It is then evaporated to dryness in vacuo giving a residue which is washed by agitating with acetone until it acquires an amorphous solid texture, which, although it could not be crystallised, was identified by spectroscopy and analysis.NMR (dimethylsulphoxide-d6-ô), 1.1-1.9 (m, 12, CH2 lysines not adjacent to the amine group), 3.50 (S, 3, CO2 CH3) 6.87-7.90 (m, s, tryptophan).
Analysis Calculated for C24H39N604CI: C, 56.41%; H, 7.64%;
N, 16.45%; Cl, 6.95% Found C, 56.73%; H, 7.28%
N, 16.09%; Cl, 70.2%
EXAMPLE 3
1 -Lis- 1 -Lis- 1-Lis- 1 -TrpOMe and 1 -Lis- 1 -Lis-1 -Lis-TrpOH
1. NPS--Z-I-Lis-E-Z-I -Lis-E-Z-l-TrpOMe HCI. E-Z-1-Lis--Z-1-Lis-1-TrpOMe obtained as per Example 2 (79g) was suspended in dry tetrahydrofuran (600ml), and triethylamine (14.6 ml) was added. The precipitate formed is filtered off and NPS-E-Z-1-Lis-NCA (46 g) is added to the filtrate.The mixture is agitated for 1 2 hours at room temperature, when it is then evaporated in vacuo giving a thick syrup; it is solidified with ethyl acetate to give a yellow solid which is crystallised from ethyl acetate, mp. 172--1740.
NMR (Dimethylsulphoxide-d6, b) 7-8.5 (m, 24: 5 indole, 15 group Z, 4 NPS); 5.1 (S, 6, CH2 Z
groups); 3.4 (S, 3, CO2 CH3).
Analysis:
Calculated for C60H72Ng013S: C, 62,18%; H, 6.22%; N. 10.88%
Found C, 62.42%; H, 5.93%; N. 10.58% 2. H Cl. E-Z- 1-Lis-#-Z-1-Lis-#-Z-1-Lis-1-TrpOMe NPS-E-Z- I-Lis-E-Z- I-Lis-E-Z-l -Lis-l -TrpOMe from the previous stage (107 g) is dissolved in a 1N solution of hydrogen chloride in dioxane cooled to -50C. Then it is then evaporated to dryness under
reduced pressure, bath temperature not exceeding 35cC, to give a solid residue which is repeatedly
washed with ethyl either. A product is obtained which is recrystallised from tetrahydrofuran-ethyl ether,
mp.170--171 .
Analysis
Calculated for C54H69N011Cl.2H20: C, 60.20%; H, 6.78%
N, 10.40%; CI, 3.30%
Found C, 60.54%; H, 6.48%
N, 10.76%; Cl, 3.45%
3. HCI. 1-Lis-1-Lis- 1 -Lis-TrpOMe and 1-Lis-1-Lis-1-Lis-TrpOH A solution of HCI. #-Z-1-Lis-#-Z-1-Lis-#-Z-1-Lis-1-TrpOMe obtained from the previous stage (80g)
in acetic acid saturated with hydrogen chloride (400ml) was heated at 1 000C for 1 hour under a
nitrogen atmosphere. It was then evaporated to dryness in vacuo to give a gummy residue which on
being washed and agitated with acetone acquires the consistency of an amorphous solid.
Although it could not be crystallised it was identified as HCI. 1-Lis-1-Lis-1-Lis-TrpOMe by analysis
and spectroscopy. NMR (dimethylsulphoxide-d6) S 1, 1-1.9 (m, 18, CH2 lysines not adjacent to the
amine group) 3.52 (S, 3, CO2 CH3), 6, 85-7.90 (m, 5, tryptophan).
Analysis
Calculated for C30H4,N805CI: C, 57.28%; H, 6.52%; N, 17.82%; Cl, 5.64%
Found C, 57.49%; H, 6.78%;
N, 17.51%; Cl, 5.82%
Then this product is dissolved in ethanol (575 ml) and 4N sodium hydroxide solution (80 ml) is
slowly added while agitating. The mixture is agitated for 121 hours at room temperature, evaporated to
dryness in vacuo, to give a residue which is then dissolved in water and neutralized by passing through
an acid ion-exchange column, IR-1 20. The dilute aqueous solution from the column is evaporated to
dryness in vacuo to give a solid which recrystallizes from methanol-acetone, mp. 187--188 , and
which corresponds to the free tetrapeptide 1 -Lis- 1 -Lis- 1 -Lis-TrpOH.
NMR (dimethylsulfphoxide-d6) S 1.1-1.9 (m, 18 CH2 lysines not adjacent to the NH2 group), 6.85-7.90 (m, 5, tryptophan).
Analysis:
Calculated for C29H38N805: C, 60.20%; H, 6.57%; N, 19.37%
Found C, 59.97%: H, 6.53%;
N, 19.08%
Claims (14)
1. A process for the preparations of lysine-tryptophan oligopeptides or their physiologically-useful
derivatives and salts, corresponding to the following general formula 1: (Li5)a - (Trp) wherein Lis represents a lysinyl residue, Trp represents a tryptophanyl residue, a > o and b > o; comprising all the possible combinations of sequences that can be formed with lysine and tryptophan from the d and/or / series, with the sole condition that when the peptide linkage -- CONH -- originates from an amine group of a lysine residue, that amine group is in the a-position to the carboxyl group that participates in the formation of said linkage; the process comprising effecting the three following reaction stages:
Stage 1 Reaction of the compound of general formula 2 with a salt of a compound of general formula 3 in the presence of an aprotic base and in a suitabie inert solvent:
in which R, and R2 independently represent p-methylenidole or -aminobutyl with the -NH2 group protected or any residue of any peptide sequence (Lis)c(Trp)d (wherein c and/or d > o) with the condition that at least one of R, and R is a residue of p-methylenidole or protected E-aminobutyl, and R3
1 2 is an alkyl aryl or arylalkyl group, whereby to obtain the compound of the general formula 4 shown below:
Stage 2:Reaction of the compound of general formfula 4 obtained from the previous stage to eliminate the o-nitrosulphenyl group and obtain a compound of the general formula 5:
or an acid addition salt thereof, where R, R2 and R3 have the same meaning as previously,
Stage 3: Reaction of the compound of general formula 5 or its salt obtained from the previous stage to remove any amine-protecting groups, whereby an ester derived from the product of general formula 1 is obtained which through optional saponification by an aqueous or aqueous-alcoholic solution of a base, followed by neutralization-of the resulting mixture, leads to the free peptide of the following general formula 1 which comprises any of those possible peptide combinations previously mentioned.
(L15)a - (Trp) 1 and optionally forming a physiologically useful derivative or salt therefrom.
2. A proces for the preparation of lysine-tryptophan oligopeptides or of their physiologically-useful derivatives and salts according to Claim 1, characterised by the reaction corresponding to Stage 1 being effected in tetrahydrofuran at room temperature.
3. A process for the preparation of lysine-tryptophan oligopeptides or of their physiologicallyuseful derivatives and salts, according to Claim 1 or Claim 2, characterised by the aprotic base used in
Stage 1 being triethylamine.
4. A process for the preparation of lysine-tryptophan oligopeptides or of their physiologicallyuseful derivatives and salts according to any one of the preceding claims, characterised by the reaction corresponding to Stage 2 being effected with a dilute solution of an acid in an appropriate inert solvent.
5. A process for the preparation of lysine-tryptophan oligopeptides or of their physiologicallyuseful derivatives and salts, according to claim 4, characterised by the reaction corresponding to Stage 2 being effected with 1 N hydrogen chloride in dioxane at a temperature of 00+50C.
6. A process for the preparation of lysine-tryptophan oligopeptides or of their physiologicallyuseful derivatives and salts, according to any one of the preceding claims, characterised by the protective group on the terminal amino group of the lysine being carbobenzyloxy.
7. A process for the preparation of lysine-tryptophan oligopeptides or of their physiologicallyuseful derivatives and salts, according to any one of the preceding claims, characterised by the reaction to remove an amine-protecting group corresponding to Stage 3 being effected with a solution of a hydracid in acetic acid or with hydrogen in acetic acid in the presence of a catalyst.
8. A process for the preparation of lysine-tryptophan oligopeptides or of their physiologicallyuseful derivatives and salts, according to to Claim 7, characterised by an elimination reaction of a carbobenzyloxy group corresponding to Stage 3 being effected in a saturated solution of hydrogen chloride in acetic acid at 80-1 000C for a period of 30 to 60 minutes.
9. A process for the preparation of lysine-tryptophan oligopeptides or of their physiologicallyuseful derivatives and salts, according to any one of the preceding claims, characterised by the saponification reaction corresponding to Stage 3 being effected with an alkaline or alkaline earth hydroxide in an aqueous-alcoholic medium.
10. A process for the preparation of lysine-tryptophan oligopeptides or of their physiologicallyuseful derivatives and salts, substantially as herein described with reference to any one of the specific examples.
11. Lysine-tryptophan oligopeptides or their physiologically-useful derivatives or salts when prepared by the process according to any of the preceding claims.
12. The compound 1-Lis-1-Lis-1-TrpOMe hydrochloride.
13. The compound 1-Lis-1-Lis-1-Lis-1-TrpOMe hydrochloride.
14. The compound 1-Lis-1-Lis-1 -Lis- 1 -TrpOH.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES501583A ES8202788A1 (en) | 1981-04-23 | 1981-04-23 | A process for the preparation of lysine-tryptophan oligopeptides and of their physiologically-useful derivatives and salts |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2097404A true GB2097404A (en) | 1982-11-03 |
GB2097404B GB2097404B (en) | 1985-05-30 |
Family
ID=8482278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8211276A Expired GB2097404B (en) | 1981-04-23 | 1982-04-19 | A process for the preparation of lysine-tryptophan oligopeptides and of their physiologically-useful derivatives and salts |
Country Status (10)
Country | Link |
---|---|
BE (1) | BE892932A (en) |
CH (1) | CH657861A5 (en) |
DE (1) | DE3213501A1 (en) |
DK (1) | DK179682A (en) |
ES (1) | ES8202788A1 (en) |
FR (1) | FR2504525B1 (en) |
GB (1) | GB2097404B (en) |
IT (1) | IT1151728B (en) |
NL (1) | NL8201649A (en) |
SE (1) | SE8202414L (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110230397A1 (en) * | 2006-08-09 | 2011-09-22 | Maria Vincenza Carriero | Peptides having pharmacological activity for treating disorders associated with altered cell migration, such as cancer |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3823464A1 (en) * | 1988-07-11 | 1990-01-18 | Asta Pharma Ag | Tryptophan dipeptides |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5116667A (en) * | 1974-07-30 | 1976-02-10 | Shionogi Seiyaku Kk |
-
1981
- 1981-04-23 ES ES501583A patent/ES8202788A1/en not_active Expired
-
1982
- 1982-04-10 DE DE19823213501 patent/DE3213501A1/en not_active Withdrawn
- 1982-04-15 CH CH2266/82A patent/CH657861A5/en not_active IP Right Cessation
- 1982-04-19 GB GB8211276A patent/GB2097404B/en not_active Expired
- 1982-04-19 SE SE8202414A patent/SE8202414L/en not_active Application Discontinuation
- 1982-04-20 IT IT20834/82A patent/IT1151728B/en active
- 1982-04-21 NL NL8201649A patent/NL8201649A/en not_active Application Discontinuation
- 1982-04-22 BE BE0/207896A patent/BE892932A/en not_active IP Right Cessation
- 1982-04-22 DK DK179682A patent/DK179682A/en not_active Application Discontinuation
- 1982-04-22 FR FR8206966A patent/FR2504525B1/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110230397A1 (en) * | 2006-08-09 | 2011-09-22 | Maria Vincenza Carriero | Peptides having pharmacological activity for treating disorders associated with altered cell migration, such as cancer |
US8354374B2 (en) * | 2006-08-09 | 2013-01-15 | Pharmaphelix S.R.L. | Peptides having pharmacological activity for treating disorders associated with altered cell migration, such as cancer |
Also Published As
Publication number | Publication date |
---|---|
DK179682A (en) | 1982-10-24 |
CH657861A5 (en) | 1986-09-30 |
IT1151728B (en) | 1986-12-24 |
FR2504525A1 (en) | 1982-10-29 |
ES501583A0 (en) | 1982-02-16 |
IT8220834A0 (en) | 1982-04-20 |
FR2504525B1 (en) | 1986-10-24 |
ES8202788A1 (en) | 1982-02-16 |
BE892932A (en) | 1982-08-16 |
NL8201649A (en) | 1982-11-16 |
SE8202414L (en) | 1982-10-24 |
GB2097404B (en) | 1985-05-30 |
DE3213501A1 (en) | 1982-11-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3959248A (en) | Analogs of thyrotropin-releasing hormone | |
KR100694528B1 (en) | A process for the preparation of perindopril, and salts thereof using 2,5-dioxo-oxazolidine intermediate compounds | |
JPH0547538B2 (en) | ||
SE447389B (en) | NEW TRIPEPTIDES AFFECTING THE CENTRAL NERVOUS SYSTEM | |
SE454699B (en) | PEPTIDES AND MEDICINAL PRODUCTS CONTAINING THEM | |
AU2002328954A1 (en) | A process for the preparation of perindopril, its analgous compounds and salts thereof using 2,5 -dioxo-oxazolidine intermediate compounds | |
US3842064A (en) | Psychopharmacologically active tetra-,penta-,hexa-,and hepta-peptides | |
US6825347B2 (en) | Uronium and immonium salts for peptide coupling | |
JPS6317839B2 (en) | ||
US3892726A (en) | Tyrosine-O-sulfate containing peptides | |
US3856770A (en) | Psychopharmacologically active tetra-, penta-, hexa-, and heptapeptides | |
CA1251000A (en) | Dipeptides, process for the preparation thereof and pharcameutical preparations containing them | |
GB2097404A (en) | A process for the preparation of lysine-tryptophan oligopeptides and of their physiologically-useful derivatives and salts | |
US3853838A (en) | Sedative peptides related to acth containing a d-phe moiety | |
US3459760A (en) | Halomercuri derivatives of 2,5-oxadiazolidinediones of basic amino acids and their use in peptide synthesis | |
US3903077A (en) | Direct synthesis of dopamine amino acid amides | |
CA2020650A1 (en) | Technique for rapid peptide coupling | |
US4102878A (en) | Process for the preparation of the cholecystokinin-pancreozymin octapeptide amide sulfate ester | |
Ohno et al. | Partial enzymic deprotection in the synthesis of a protected octapeptide bearing a free terminal carboxyl group | |
US3445447A (en) | Tert-amyloxycarbonyl derivatives of amino acids | |
HU181402B (en) | Process for preparing new peptides with psychopharmacological activity | |
FR2543546A1 (en) | B-ASPARTYL GROUP-CONTAINING GONADORELINE DERIVATIVES, PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL PREPARATIONS CONTAINING SAME | |
AU626608B2 (en) | A process for the preparation of tripeptides | |
CA1285698C (en) | Process for the preparation of compounds containing carboxamide groups,in particular of peptides | |
US3933783A (en) | Formation of peptide bonds in the presence of isonitriles |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |