EP0000035A1 - Alpha-amino-acides, compositions et procédé pour la préparation de ces composés - Google Patents

Alpha-amino-acides, compositions et procédé pour la préparation de ces composés Download PDF

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Publication number
EP0000035A1
EP0000035A1 EP78100058A EP78100058A EP0000035A1 EP 0000035 A1 EP0000035 A1 EP 0000035A1 EP 78100058 A EP78100058 A EP 78100058A EP 78100058 A EP78100058 A EP 78100058A EP 0000035 A1 EP0000035 A1 EP 0000035A1
Authority
EP
European Patent Office
Prior art keywords
compounds
alpha
diphenylmethylenedioxybenzyl
aminoprop
benzylidene
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
Application number
EP78100058A
Other languages
German (de)
English (en)
Other versions
EP0000035B1 (fr
Inventor
Arthur Allan Patchett
David Taub
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Merck and Co Inc
Original Assignee
Merck and Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Merck and Co Inc filed Critical Merck and Co Inc
Publication of EP0000035A1 publication Critical patent/EP0000035A1/fr
Application granted granted Critical
Publication of EP0000035B1 publication Critical patent/EP0000035B1/fr
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • C07F7/0803Compounds with Si-C or Si-Si linkages
    • C07F7/081Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te
    • C07F7/0812Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te comprising a heterocyclic ring
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00Drugs for disorders of the cardiovascular system
    • A61P9/12Antihypertensives
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D317/00Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D317/08Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
    • C07D317/44Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D317/46Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems condensed with one six-membered ring

Definitions

  • the present invention is concerned with a-ethynyl-and a-vinyl-3,4-disubstituted phenylalanines and especially the 3,4-dihydroxyphenyla- lanine species.
  • a-Methyl-3,4-dihydroxyphenylalanine, particularly its L-isomer, is a known antihypertensive agent. (U.S. 2,868,818; U. S . 3,344,023).
  • Novel a-ethynyl-and a-vinyl-3,4-disubstituted phenylalanines have been discovered. These novel alanines have pharmaceutical activity including antihypertensive action.
  • the present invention is embodied in a-ethynyl or a-vinyl phenylalanine compounds having the formula wherein
  • the pharmaceutically acceptable salts of the formula I compounds are also included. These salts generally are acid addition salts of suitable organic or inorganic acids. Preferred salts are the hydrohalides such as the hydrobromides, the hydrochlorides, the hydrogen iodides. Most preferred salts are the hydrochlorides.
  • the compounds of formula I have a chiral center and may occur in optically active forms, i.e., as optical isomers. These isomers are conventionally designated as D and L, d and 1, + and -, (S) and (R) or by a combination of these symbols. Where the compound name or formula does not specify the isomer form, all forms are included, i.e., the individual isomers, mixtures thereof and racemates.
  • R may be H or an alkyl group, preferably a C 1 -C 18 alkyl group.
  • suitable alkyl groups are octadecyl, 2-ethylhexyl, lauryl, undecyl, methyl, isopropyl, hexyl and the like.
  • Preferred R groups are H and C l -C 6 alkyl. Most preferred R groups are H and ethyl.
  • R 1 and R 2 include H and C2-C6 alkanoyl groups.
  • suitable alkanoyl groups are acetyl, octanoyl, pivaloyl, 2-methylpropanoyl, heptanoyl, butanoyl and the like.
  • the most preferred R l/ R 2 substituent is hydrogen.
  • a preferred class of compounds of the present invention is that having the formula
  • R is hydrogen or C 1 -C 6 alkyl, preferably ethyl.
  • the L-isomer form of the formula II compound is also more preferred.
  • Another preferred class of compounds of the present invention is that having the formula
  • R is hydrogen or C 3 -C 6 alkyl, preferably ethyl.
  • the L-isomer form of the formula III compounds are also more preferred.
  • the compounds of the present invention have pharmaceutical activity especially as antihypertensive agents.
  • the present compounds are useful for treating hypertension in humans.
  • the present compounds may be administered to the hypertensive patient orally, parenterally or via any other suitable administration route.
  • Conventional dosage forms are used such as tablets, troches, capsules, liquid formulations, e.g., solutions, dispersions, emulsiions, elixirs and the like.
  • Conventional compounding ingredients i.e., diluents, carriers, etc. and conventional preparation procedures are utilized.
  • the daily dosage of the present compounds may be varied as required.
  • a daily dosage range for the hypertensive patient is about 50 mg. to about 5000 mg.
  • a preferred daily dosage range is about 100 mg. to about 3500 mg.
  • a more preferred daily dosage range is about 250 to about 1500 mg.
  • Compounds of the present invention may be prepared by any convenient process.
  • the hydrolysis is carried out using conventional reagents and conditions, for example using an acid such as HCl, HBr, H 3 PO 4 , in a suitable solvent such as water, aqueous alkanols and the like.
  • the hydrolysis may be carried out at room temperature or at elevated temperatures up to about 140°C.
  • the reaction time will vary depending on other parameters such as temperature, etc.
  • R in formula I is an alkyl group
  • the compound is prepared by conventional esterification of the corresponding compound where R is H as illustrated by the following equation
  • the pharmaceutically acceptable salts of the present compounds may be obtained directly from the hydrolysis reaction described above. Such salts may also be obtained by treatment of the formula I free base with an appropriate acid under suitable conditions.
  • the compounds of the present invention may be separated into the individual enantiomers by conventional resolution techniques. Such techniques commonly involve the formation of salts of the present racemeic acids with optically active bases.
  • the resolution is preferably carried out on the O,O,N-triacyl derivatives of the racemic acid mixture. These acyl derivatives are prepared by treatment of the free acid mixture with a suitable acylating agent as illustrated by the following equation:
  • the reaction may be carried out in an acid medium, e.g., glacial acetic acid.
  • an acid medium e.g., glacial acetic acid.
  • An example illustrating such an acylation system is in U.S. 3,983,138.
  • the mass spectrum showed a large molecular ion peak at 501.
  • the HCl salt obtained in Example 1 H.) may be conventionally neutralized or treated with an HC1 scavenger such as propylene oxide to obtain the corresponding free amino acid.
  • the HC1 salt obtained in Example 2 B may be conventionally neutralized or treated with an HC1 scavenger such as propylene oxide to obtain the corresponding free amino acid.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Cardiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
EP78100058A 1977-06-01 1978-06-01 Alpha-amino-acides, compositions et procédé pour la préparation de ces composés Expired EP0000035B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US802390 1977-06-01
US05/802,390 US4401676A (en) 1977-06-01 1977-06-01 Novel α-amino acids

Publications (2)

Publication Number Publication Date
EP0000035A1 true EP0000035A1 (fr) 1978-12-20
EP0000035B1 EP0000035B1 (fr) 1982-01-06

Family

ID=25183567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100058A Expired EP0000035B1 (fr) 1977-06-01 1978-06-01 Alpha-amino-acides, compositions et procédé pour la préparation de ces composés

Country Status (7)

Country Link
US (1) US4401676A (fr)
EP (1) EP0000035B1 (fr)
JP (1) JPS543036A (fr)
DE (1) DE2861499D1 (fr)
DK (1) DK240778A (fr)
IE (1) IE47073B1 (fr)
IT (1) IT7849636A0 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2827805A1 (de) * 1977-07-01 1979-01-18 Merrell Toraude & Co Alpha-vinyl-aminosaeuren und verfahren zu ihrer herstellung
DE2827824A1 (de) * 1977-07-01 1979-01-18 Merrell Toraude & Co Alpha-acetylenische aminosaeuren
DE2827866A1 (de) * 1977-07-01 1979-01-18 Merrell Toraude & Co Alpha-acetylenische derivate von alpha-aminosaeuren sowie verfahren zu deren herstellung
EP0007615A2 (fr) * 1978-07-24 1980-02-06 Merck & Co. Inc. Procédé pour la préparation d'amino-acides et d'esters
EP0008658A1 (fr) * 1978-07-24 1980-03-19 Merck & Co. Inc. Alpha-éthinyle-alpha-amino-acides et leurs esters et compositions pharmaceutiques les contenant
EP0008657A1 (fr) * 1978-07-24 1980-03-19 Merck & Co. Inc. Alpha-vinyl-alpha-aminoacides et leurs esters et compositions pharmaceutiques les contenant
EP0309827A1 (fr) * 1987-09-18 1989-04-05 Banyu Pharmaceutical Co., Ltd. Dérivés de L-dopa ou leurs sels d'addition, procédé pour les produire et leur utilisation
WO1996008483A1 (fr) * 1994-09-16 1996-03-21 Roussel Uclaf Derives de l'acide gallique, leur procede de preparation et leur application a titre de medicaments

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09501178A (ja) * 1993-08-06 1997-02-04 スミスクライン・ビーチャム・コーポレイション エンドセリン受容体アンタゴニスト

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1850M (fr) * 1961-02-24 1963-06-10 Merck & Co Inc Dérivés de la phénylalanine.
US3132176A (en) * 1960-08-19 1964-05-05 Merck & Co Inc Preparation of o, o-dialkanoyl derivatives of d, l-alpha-alkyl-beta-3, 4-dihydroxyphenylalanine by preferential acylation

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868818A (en) * 1953-12-15 1959-01-13 Merck & Co Inc Alpha methyl phenylalanines
NL263355A (fr) * 1960-04-08
CH441362A (de) * 1963-12-24 1967-08-15 Hoffmann La Roche Verfahren zur Herstellung von Phenylalaninderivaten
US3395176A (en) * 1964-03-06 1968-07-30 Merck & Co Inc Alpha-hydroxymethylphenylalanine compounds
US3488363A (en) * 1965-10-22 1970-01-06 Merck & Co Inc Preparation of alpha-methylphenyl alanines
CH475193A (de) * 1966-06-07 1969-07-15 Hoffmann La Roche Verfahren zur Herstellung von Phenylalaninderivaten
US3714241A (en) * 1969-10-29 1973-01-30 Merck & Co Inc PREPARATION OF alpha -METHYL-3,4-DISUBSTITUTED PHENYLALANINES
JPS5025465B1 (fr) * 1970-12-29 1975-08-23
US4022910A (en) * 1972-12-22 1977-05-10 Richardson-Merrell Inc. L-3-hydroxymethyltyrosine and salts thereof for lowering blood pressure
US3983138A (en) * 1973-09-25 1976-09-28 Merck & Co., Inc. Amino acid esters
US4051251A (en) * 1976-02-13 1977-09-27 Merck & Co., Inc. Novel anti-hypertensive compositions

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132176A (en) * 1960-08-19 1964-05-05 Merck & Co Inc Preparation of o, o-dialkanoyl derivatives of d, l-alpha-alkyl-beta-3, 4-dihydroxyphenylalanine by preferential acylation
FR1850M (fr) * 1961-02-24 1963-06-10 Merck & Co Inc Dérivés de la phénylalanine.

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2827805A1 (de) * 1977-07-01 1979-01-18 Merrell Toraude & Co Alpha-vinyl-aminosaeuren und verfahren zu ihrer herstellung
DE2827824A1 (de) * 1977-07-01 1979-01-18 Merrell Toraude & Co Alpha-acetylenische aminosaeuren
DE2827866A1 (de) * 1977-07-01 1979-01-18 Merrell Toraude & Co Alpha-acetylenische derivate von alpha-aminosaeuren sowie verfahren zu deren herstellung
FR2401133A1 (fr) * 1977-07-01 1979-03-23 Merrell Toraude & Co Nouveaux derives d'aminoacides a-acetyleniques, leur preparation et leur utilisation comme inhibiteurs de la decarboxylase des aminoacides aromatiques
EP0007615A2 (fr) * 1978-07-24 1980-02-06 Merck & Co. Inc. Procédé pour la préparation d'amino-acides et d'esters
EP0008658A1 (fr) * 1978-07-24 1980-03-19 Merck & Co. Inc. Alpha-éthinyle-alpha-amino-acides et leurs esters et compositions pharmaceutiques les contenant
EP0008657A1 (fr) * 1978-07-24 1980-03-19 Merck & Co. Inc. Alpha-vinyl-alpha-aminoacides et leurs esters et compositions pharmaceutiques les contenant
EP0007615A3 (en) * 1978-07-24 1980-05-28 Merck & Co. Inc. Process for preparing amino acids and esters, and intermediates therefor
EP0309827A1 (fr) * 1987-09-18 1989-04-05 Banyu Pharmaceutical Co., Ltd. Dérivés de L-dopa ou leurs sels d'addition, procédé pour les produire et leur utilisation
WO1996008483A1 (fr) * 1994-09-16 1996-03-21 Roussel Uclaf Derives de l'acide gallique, leur procede de preparation et leur application a titre de medicaments
FR2724654A1 (fr) * 1994-09-16 1996-03-22 Roussel Uclaf Nouveaux derives de l'acide gallique, leur procede de preparation, les nouveaux intermediaires obtenus, leur application a titre de medicaments et les compositions pharmaceutiques les renfermant

Also Published As

Publication number Publication date
IT7849636A0 (it) 1978-05-31
DE2861499D1 (en) 1982-02-25
US4401676A (en) 1983-08-30
DK240778A (da) 1979-01-12
EP0000035B1 (fr) 1982-01-06
JPS543036A (en) 1979-01-11
IE47073B1 (en) 1983-12-14
IE781079L (en) 1978-12-01

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