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WO1992019612A1 - Agent anti-arteriosclereux, procede de preparation et utilisation de celui-ci - Google Patents

Agent anti-arteriosclereux, procede de preparation et utilisation de celui-ci Download PDF

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Publication number
WO1992019612A1
WO1992019612A1 PCT/EP1992/000713 EP9200713W WO9219612A1 WO 1992019612 A1 WO1992019612 A1 WO 1992019612A1 EP 9200713 W EP9200713 W EP 9200713W WO 9219612 A1 WO9219612 A1 WO 9219612A1
Authority
WO
WIPO (PCT)
Prior art keywords
ethyl
preparation
compounds
hydroxythiophene
pharmaceutically acceptable
Prior art date
Application number
PCT/EP1992/000713
Other languages
English (en)
Inventor
Giuseppe Quadro
Original Assignee
Medea Research S.R.L.
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 Medea Research S.R.L. filed Critical Medea Research S.R.L.
Publication of WO1992019612A1 publication Critical patent/WO1992019612A1/fr

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D333/00Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
    • C07D333/02Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
    • C07D333/04Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
    • C07D333/26Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D333/38Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals

Definitions

  • the present invention relates to 3-acetoxy- thiophene-2-carboxylic acid, which will hereinafter be named MR-2058, of formula
  • the invention also relates to a process for the preparation of compound MR-2058, to pharmaceutical compositions containing them and to the use thereof in the preparation of medicaments useful in the treatment of arteriosclerosis.
  • the compound of the invention is characterized by the presence of a carboxy group; therefore the present invention also relates to all the possible salts of the acid with non toxic, pharmaceutically acceptable organic and inorganic bases.
  • said salts are the sodium, potassium, calcium, iron, zinc salts; as well as those with diethylethanolamine, morpholine, piperidine, triethylamine.
  • SMC smooth muscle cells
  • MR-2058 has a surprising activity inhibiting proliferation of SMC of the arterial wall, and it also has other interesting physiological properties.
  • MR-2058 proved to have a marked ability to inhibit the proliferation of SMC from rat aorta, in the test carried out according to the procedure described by Bernini et al. (Pharm. Res. 1 , 27-35, 1990).
  • MR-2058 was found to have an anti-platelet aggregation activity comparable to that of acetylsalicylic acid.
  • Ethyl propiolate (II) is condensed with ethyl thioglycolate (III) in an equimolar ratio.
  • the resulting compound (IV) is cyclized to ethyl 3-hydroxythiophene-2-carboxylate (V); the subsequent hydrolysis of the ester and the acetylation of the hydroxy group at the 3-position give MR-2058 (I).
  • reaction of (II) and (III) is carried out in a medium consisting of an aqueous-organic homogeneous phase, comprising an organic solvent mixed with water in various ratios; solvents such as methanol, ethanol, acetone, dioxane can be used, a 1/1 (v/v) ethanol-water mixture being preferred.
  • solvents such as methanol, ethanol, acetone, dioxane can be used, a 1/1 (v/v) ethanol-water mixture being preferred.
  • an acid-binding agent such as trimethylamine, triethylamine, pyridine.
  • Compound (III) is present in the two isomeric cis-trans forms; however the isomeric mixture is directly used in the subsequent step.
  • Cyclization of (IV) occurs via the carbanion, and it is carried out with conventional methods in which such an intermediate is formed, i.e. in the presence of a strong base, such as an alkali alkoxide, for example sodium methoxide, in anhydrous solvents, such as benzene, toluene, xylene.
  • a strong base such as an alkali alkoxide, for example sodium methoxide
  • anhydrous solvents such as benzene, toluene, xylene.
  • NMR analysis evidences the presence of the two cis/trans isomers in a 77/23 ratio.
  • the product is directly used for the subsequent step.
  • Salification of the carboxy group of (I) can be carried out with conventional techniques.
  • the corresponding sodium, potassium, ethanolamine salts were prepared.
  • the present invention also relates to pharmaceutical compositions containing compound MR-2058 as the active ingredient, alone or in admixture with conventional carriers and excipients, according to the techniques described, for example, in "Remington's Pharmaceutical Sciences Handbook” Mack. Pub. Co., N.Y. U.S.A.
  • compositions are soft and hard gelatin capsules, tablets, optionally in gastro-resistant or slow-release forms, powders, solutions and suspensions for the oral and parenteral administrations, suppositories, sustained-release forms.
  • the pharmaceutical carriers can be excipients for solid forms, such as lactose, talc, PVP; granulating agents, such as magnesium stearate; suspending agents, such as methyl cellulose; and/or surfactants, such as polyoxyethylene stearate; preservatives, such as hydroxybenzoates; flavoring and sweetening agents.
  • compositions of the invention are formulated preferably in unitary dosage forms, containing a therapeutically effective amount of MR-2058.
  • the daily dosage will depend on the severity of the disease to treat, as well as on the patient's conditions.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

L'invention concerne l'acide 3-acétoxythiophène-2-carboxylique, son procédé de préparation et son utilisation en thérapie chez l'homme.
PCT/EP1992/000713 1991-04-24 1992-03-31 Agent anti-arteriosclereux, procede de preparation et utilisation de celui-ci WO1992019612A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI91A001146 1991-04-24
ITMI911146A IT1247527B (it) 1991-04-24 1991-04-24 Agente antiarteriosclerotico, sua preparazione ed uso

Publications (1)

Publication Number Publication Date
WO1992019612A1 true WO1992019612A1 (fr) 1992-11-12

Family

ID=11359782

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/000713 WO1992019612A1 (fr) 1991-04-24 1992-03-31 Agent anti-arteriosclereux, procede de preparation et utilisation de celui-ci

Country Status (3)

Country Link
AU (1) AU1453492A (fr)
IT (1) IT1247527B (fr)
WO (1) WO1992019612A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998046588A3 (fr) * 1997-04-11 1999-01-07 Neorx Corp Composes et therapies destines a la prevention d'affections vasculaires ou non vasculaires
US5945456A (en) * 1993-05-13 1999-08-31 Neorx Corporation Prevention and treatment of pathologies associated with abnormally proliferative smooth muscle cells
US7625410B2 (en) 2001-05-02 2009-12-01 Boston Scientific Scimed, Inc. Stent device and method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6515009B1 (en) 1991-09-27 2003-02-04 Neorx Corporation Therapeutic inhibitor of vascular smooth muscle cells
US5811447A (en) 1993-01-28 1998-09-22 Neorx Corporation Therapeutic inhibitor of vascular smooth muscle cells
US6491938B2 (en) 1993-05-13 2002-12-10 Neorx Corporation Therapeutic inhibitor of vascular smooth muscle cells

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020641B (de) * 1955-10-15 1957-12-12 Basf Ag Verfahren zur Herstellung von Derivaten der 3-Oxythiophen-2-carbonsaeure

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020641B (de) * 1955-10-15 1957-12-12 Basf Ag Verfahren zur Herstellung von Derivaten der 3-Oxythiophen-2-carbonsaeure

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMISCHE BERICHTE. vol. 87, 1954, WEINHEIM DE pages 841 - 848; H. FIESSELMANN ET AL.: ']ber Oxythiophen-carbons{ureester, II. Mitteil.: Synthese und Reaktionen von 3-Oxy-thiophen-carbons{ure-2-estern' cited in the application *
J. MARCH 'Advanced Organic Chemistry, 3rd Edition' 1985 , JOHN WILEY & SONS, INC. , NEW YORK, US *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5945456A (en) * 1993-05-13 1999-08-31 Neorx Corporation Prevention and treatment of pathologies associated with abnormally proliferative smooth muscle cells
WO1998046588A3 (fr) * 1997-04-11 1999-01-07 Neorx Corp Composes et therapies destines a la prevention d'affections vasculaires ou non vasculaires
US7511070B2 (en) 1997-04-11 2009-03-31 Poniard Pharmaceuticals, Inc. Compounds and therapies for the prevention of vascular and non-vascular pathologies
US7625410B2 (en) 2001-05-02 2009-12-01 Boston Scientific Scimed, Inc. Stent device and method

Also Published As

Publication number Publication date
ITMI911146A0 (it) 1991-04-24
IT1247527B (it) 1994-12-17
ITMI911146A1 (it) 1992-10-24
AU1453492A (en) 1992-12-21

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