Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
  • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
  • C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
• • 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
• • 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
  • A61P25/04—Centrally acting analgesics, e.g. opioids
• • 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
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
  • C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
  • C07D211/80—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members
  • C07D211/84—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen directly attached to ring carbon atoms
  • C07D211/86—Oxygen atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
  • C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
  • C07D409/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring-member bond

Definitions

• the present invention relates to new derivatives of 2,3-dihydro-4 (1H) -pyridinone, their preparation process, the pharmaceutical compositions containing them as well as their use as mnemocognitive and analgesic facilitators.
• the aging of the population by increasing life expectancy has in parallel led to a large increase in cognitive disorders linked to normal cerebral aging or pathological cerebral aging occurring in the course of neurodegenerative diseases such as, for example, Alzheimer's disease.
• Patent application EP 0119087 describes derivatives of l-aza-2-alkyl-6-aryl-cycloalkanes useful as analgesics.
• Ri represents a hydrogen atom or a linear or branched arylalkyl (C ⁇ -C 6 ) group, linear or branched (C ⁇ -C 6 ) alkyl, linear or branched acyl (C ⁇ -C), alkoxycarbonyl (C ⁇ -C 6 ) linear or branched, arylalkoxycarbonyl (C ⁇ -C 6 ) linear or branched or trifluoroacetyl,
• R 2 represents a linear or branched (C ⁇ -C 6 ) alkyl group
• X represents an oxygen atom, or NOR 3 in which:
• R 3 represents a hydrogen atom or a linear or branched alkyl group (C ⁇ -C 6 ) optionally substituted by one or more groups, identical or different, chosen from hydroxy, amino (optionally substituted by one or two alkyl groups (Cj -C 6 ) linear or branched) and alkoxy (C ⁇ -C 6 ) linear or branched,
• Ar represents an aryl group or a heteroaryl group
• aryl a phenyl, biphenylyl, naphthyl, tetrahydronaphthyl group, each of these groups being optionally substituted by one or more groups, identical or different, chosen from halogen, linear or branched (C ⁇ -C 6 ) alkyl, hydroxy, alkoxy (C ⁇ -C 6 ) linear or branched, trihalomethyl, nitro or amino (optionally substituted by one or more alkyl groups (C, -C 6 ) linear or branched),
• heteroaryl group a 5 or 12-membered mono- or bicyclic aromatic group containing one, two or three heteroatoms chosen from oxygen, nitrogen or sulfur, it being understood that the heteroaryl may be optionally substituted by one or more, identical groups or different, chosen from halogen, linear or branched (C] -C 6 ) alkyl, linear or branched, linear or branched, hydroxy (C ⁇ -C 6 ), trihalomethyl, nitro or amino (optionally substituted by one or more alkyl groups (C ⁇ -C 6 ) linear or branched).
• heteroaryl groups non-limiting mention may be made of thienyl, pyridyl, furyl, pyrrolyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl groups.
• hydrochloric hydrobromic, sulfuric, phosphonic, acetic, trifluoroacetic, lactic, pyruvic, malonic, succinic, glutaric, fumaric, tartaric, maleic, citric, ascorbic, oxalic, methanesulphonic acids. , benzenesulfonic, camphoric, etc.
• the preferred compounds of formula (I) are those for which the group X represents an oxygen atom.
• the preferred Ri group of the invention is the hydrogen atom or a linear or branched alkoxycarbonyl group (C ⁇ -C 6 ).
• aryl assigned to the group Ar as defined in formula (I) is preferably the optionally substituted phenyl group.
• aryl assigned to the group Ar as defined in formula (I) is even more preferably the substituted phenyl group.
• heteroaryl assigned to the group Ar as defined in formula (I) is preferably the optionally substituted thienyl group or the optionally substituted pyridyl group.
• the invention also extends to the process for preparing the compounds of formula (I), characterized in that the 4-methoxy pyridine is reacted successively with phenyl chloroformate, an organomagnesium derivative of formula (II):
• R 2 and Ar are as defined above, compound of formula (I / b) which is optionally reacted with a compound of formula R'iY in which R'i represents an arylalkyl group (C ⁇ -C 6 ) linear or branched, alkyl (C ⁇ -C 6 ) linear or branched, acyl (C ⁇ -C 6 ) linear or branched, alkoxycarbonyl (C ⁇ -C 6 ) linear or branched, arylalkoxycarbonyl (C ⁇ -C 6 ) linear or branched and trifluoroacetyl and Y represents a leaving group, to lead to the compound of formula (I c), special case of the compounds of formula (I):
• the compounds of formulas (I / a) to (I / e) constitute the set of compounds of formula (I), which are purified, if necessary, according to conventional purification techniques, from which they are separated, if it is desired, the isomers according to conventional separation techniques, and which, if desired, is converted into their addition salts with a pharmaceutically acceptable acid.
• the compounds of the present invention in addition to being new, have properties which facilitate cognitive and analgesic processes which make them useful in the treatment of cognitive deficits associated with cerebral aging and neurodegenerative pathologies such as Alzheimer's disease. , Parkinson's disease, Pick's disease, Korsakoff's disease, frontal and subcortical dementias and in the treatment of pain.
• the invention also extends to pharmaceutical compositions containing as active ingredient a compound of formula (I) with one or more inert, non-toxic and suitable excipients.
• pharmaceutical compositions according to the invention mention may be made more particularly of those which are suitable for oral, parenteral (intravenous or subcutaneous), nasal administration, simple or dragefied tablets, sublingual tablets, capsules, tablets, suppositories, creams, ointments, dermal gels, injections, oral suspensions, etc.
• the useful dosage is adaptable according to the nature and severity of the disease, the route of administration as well as the age and weight of the patient. This dosage varies from 1 to 500 mg per day in one or more doses.
• the starting materials used are known products or prepared according to known preparatory methods.
• the oil obtained is taken up in 100 ml of anhydrous tetrahydrofuran, the solution is then cooled to -40 ° C and then 0.15 mmol of potassium tert-butoxide is added. The reaction mixture is stirred for 2 hours at ⁇ 0 ° C., 1 hour at room temperature and then 100 ml of water are added. The aqueous phase is extracted twice with ethyl ether then the organic phase is dried over magnesium sulfate, filtered and concentrated under reduced pressure to give the expected product.
• the expected product is obtained according to the process described in Example 1 with phenyl boronic acid.
• the expected product is obtained according to the process described in Example 2 from the compound of Example 3.
• EXAMPLE S 6- (3-chloroDhenvl) -2-methyl-4-oxo-3,4-diI tert-butyl carboxylate.
• the expected product is obtained according to the process described in Example 1 with 3-chlorobenzene boronic acid.
• the expected product is obtained according to the process described in Example 2 from the compound of Example 5.
• the expected product is obtained according to the process described in Example 1 with 6-chloropyridine-3-boronic acid.
• EXAMPLE 8 6- (6-chloro-3-pyridyl) -2-methyl-2,3-dihydro-4 (1H) -pyridinone.
• the expected product is obtained according to the process described in Example 2 from the compound of Example 7.
• mice The effects on body temperature of the compounds of the present intervention were evaluated in the adult male NMRI mouse.
• the rectal temperature of the mice (18-20 g) was measured just before pharmacological treatment (intraperitoneal route) with the products under study or their vehicles (20 mg / kg).
• the mice were then placed in individual cages (10x10x10 cm) and their rectal temperature was measured every 30 minutes for the 2 hours following the treatment.
• the values were the means (° C) plus or minus the standard errors on the means, and the inter-batch comparisons were carried out by a one-factor variance analysis test followed, if necessary, by a Dunnett test.
• the results show that the compounds of the invention are devoid of hypothermic activity for doses up to 20 mg / kg.
• mice The intraperitoneal administration of an alcoholic solution of PBQ causes abdominal cramps in mice (SIEGMUND et al., Proc. Soc. Exp. Biol., 1957, 95,
• the experimenter Via a video device, the experimenter observes the social recognition behavior of the adult rat and measure the overall duration. Then the young rat is removed from the cage of the adult rat and is placed in an individual cage, until the second presentation. The adult rat then receives the product to be tested (intraperitoneal route) and, 2 hours later, is brought back into the presence (5 minutes) of the young rat. Social recognition behavior is then observed again and its duration is measured.
• the table below gives the difference (T 2 -T ⁇ ), expressed in seconds, of the "recognition" time of the two meetings.

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• Organic Chemistry (AREA)
• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Bioinformatics & Cheminformatics (AREA)
• Biomedical Technology (AREA)
• Neurology (AREA)
• Neurosurgery (AREA)
• Pharmacology & Pharmacy (AREA)
• General Health & Medical Sciences (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• General Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Medicinal Chemistry (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Hospice & Palliative Care (AREA)
• Psychiatry (AREA)
• Pain & Pain Management (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Plural Heterocyclic Compounds (AREA)
• Hydrogenated Pyridines (AREA)

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• 2002
  • 2002-11-05 FR FR0213803A patent/FR2846654A1/fr active Pending
• 2003
  • 2003-11-04 BR BR0315996-5A patent/BR0315996A/pt not_active IP Right Cessation
  • 2003-11-04 CN CNA2003801018233A patent/CN1705660A/zh active Pending
  • 2003-11-04 PL PL03375959A patent/PL375959A1/xx not_active Application Discontinuation
  • 2003-11-04 EP EP03767888A patent/EP1560825A1/fr not_active Withdrawn
  • 2003-11-04 US US10/533,784 patent/US20060019995A1/en not_active Abandoned
  • 2003-11-04 CA CA002503993A patent/CA2503993A1/fr not_active Abandoned
  • 2003-11-04 AU AU2003292322A patent/AU2003292322A1/en not_active Abandoned
  • 2003-11-04 WO PCT/FR2003/003276 patent/WO2004043952A1/fr not_active Application Discontinuation
  • 2003-11-04 KR KR1020057007992A patent/KR20050084942A/ko not_active Application Discontinuation
  • 2003-11-04 MX MXPA05004793A patent/MXPA05004793A/es not_active Application Discontinuation
  • 2003-11-04 JP JP2004550728A patent/JP2006508110A/ja active Pending
  • 2003-11-04 EA EA200500716A patent/EA200500716A1/ru unknown
  • 2003-11-04 AR ARP030104025A patent/AR041758A1/es unknown
• 2005
  • 2005-04-14 MA MA28221A patent/MA27407A1/fr unknown
  • 2005-05-30 NO NO20052598A patent/NO20052598L/no unknown

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