WO2012000519A1 - Dérivés d'arylamide et d'hétéroarylamide utilisés comme inhibiteurs de l'enzyme pde10a - Google Patents

Dérivés d'arylamide et d'hétéroarylamide utilisés comme inhibiteurs de l'enzyme pde10a Download PDF

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Publication number
WO2012000519A1
WO2012000519A1 PCT/DK2011/050257 DK2011050257W WO2012000519A1 WO 2012000519 A1 WO2012000519 A1 WO 2012000519A1 DK 2011050257 W DK2011050257 W DK 2011050257W WO 2012000519 A1 WO2012000519 A1 WO 2012000519A1
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disorder
ylmethoxy
quinolin
dementia
type
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PCT/DK2011/050257
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English (en)
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Jan Kehler
Mogens Larsen
Mette Norman Erichsen
Sebastian Leth-Petersen
John Paul Kilburn
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H. Lundbeck A/S
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Publication of WO2012000519A1 publication Critical patent/WO2012000519A1/fr

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    • 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
    • C07D401/12—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 linked by a chain containing hetero atoms as chain links
    • 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
    • A61P25/18—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
    • 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
    • C07D401/14—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 three or more hetero rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
    • C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
    • C07D403/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
    • C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
    • C07D413/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
    • C07D417/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing three or more hetero rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
    • C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
    • C07D471/04—Ortho-condensed systems

Definitions

  • the invention provides compounds that are PDE10A enzyme inhibitors, and as such are useful to treat neurodegenerative and psychiatric disorders.
  • the invention also provides pharmaceutical compositions comprising the compound of the invention and methods of treating disorders using the compound of the invention.
  • cyclic-adenosine monophosphate cyclic-adenosine monophosphate
  • cGMP cyclic-guanosine monophosphate
  • Intracellular cAMP and cGMP are generated by adenyl and guanyl cyclases, and are degraded by cyclic nucleotide phosphodiesterases (PDEs).
  • Intracellular levels of cAMP and cGMP are controlled by intracellular signaling, and stimulation/repression of adenyl and guanyl cyclases in response to GPCR activation is a well characterized way of controlling cyclic nucleotide concentrations (Antoni, F.A. Front.
  • cAMP and cGMP levels in turn control activity of cAMP- and cGMP-dependent kinases as well as other proteins with cyclic nucleotide response elements, which through subsequent phosphorylation of proteins and other processes regulate key neuronal functions such as synaptic transmission, neuronal differentiation and survival.
  • Phosphodieasterase 10A is a dual-specificity phosphodiesterase that can convert both cAMP to AMP and cGMP to GMP (Loughney, K. et al. Gene 1999, 234, 109-1 17; Fujishige, K. et al. Eur. J. Biochem. 1999, 266, 1 1 18-1 127 and Soderling, S. et al. Proc. Natl. Acad. Sci. 1999, 96, 7071 -7076).
  • PDE10A is primarily expressed in the neurons in the striatum, n. accumbens and in the olfactory tubercle. PDE10A is expressed at high levels neurons in the striatum, by the medium spiny neurons (MSN) of the caudate nucleus, the accumbens nucleus and the corresponding neurons of the olfactory tubercle (Kotera, J. et al. Biochem. Biophys. Res. Comm. 1999, 261, 551 -557 and Seeger, T.F. et al. Brain Research, 2003, 985, 1 13-126). These constitute the core of the basal ganglia system.
  • MSN medium spiny neurons
  • the MSN has a key role in the cortical-basal ganglia-thalamocortical loop, integrating convergent cortical/thalamic input, and sending this integrated information back to the cortex.
  • MSN express two functional classes of neurons: the Di class expressing Di dopamine receptors and the D 2 class expressing D 2 dopamine receptors.
  • the Di class of neurons is part of the 'direct' striatal output pathway, which broadly functions to facilitate behavioral responses.
  • the D 2 class of neurons is part of the 'indirect' striatal output pathway, which functions to suppress behavioral responses that compete with those being facilitated by the 'direct' pathway. These competing pathways act like the brake and accelerator in a car.
  • the poverty of movement in Parkinson's disease results from over-activity of the 'indirect' pathway, whereas excess movement in disorders such as Huntington's disease represent over-activity of the direct pathway.
  • PDE10A regulation of cAMP and/or cGMP signaling in the dendritic compartment of these neurons may be involved in filtering the cortico/thalamic input into the MSN.
  • PDE10A may be involved in the regulation of GABA release in the substantia nigra and globus pallidus (Seeger, T.F. et al. Brain Research, 2003, 985, 1 13-126).
  • Dopamine D 2 receptor antagonism is well established in the treatment of schizophrenia. Since the 1950's, dopamine D 2 receptor antagonism has been the mainstay in psychosis treatment and all effective antipsychotic drugs antagonise D 2 receptors. The effects of D 2 are likely to be mediated primarily through neurons in the striatum, n. accumbens and olfactory tubercle, since these areas receive the densest dopaminergic projections and have the strongest expression of D 2 receptors (Konradi, C. and Heckers, S. Society of Biological Psychiatry, 2001 , 50, 729-742).
  • Dopamine D 2 receptor agonism leads to decrease in cAMP levels in the cells where it is expressed through adenylate cyclase inhibition, and this is a component of D 2 signalling (Stoof, J. C; Kebabian J. W. Nature 1981 , 294, 366-368 and Neve, K. A. et al. Journal of Receptors and Signal Transduction 2004, 24, 165-205).
  • D 2 receptor antagonism effectively increases cAMP levels, and this effect could be mimicked by inhibition of cAMP degrading phosphodiesterases.
  • PDE10A in this context, has the desired expression profile with high and relatively specific expression in neurons in striatum, n. accumbens and olfactory tubercle, PDE10A inhibition is likely to have effects similar to D 2 receptor antagonism and therefore have antipsychotic effects. While PDE10A inhibition is expected to mimic D 2 receptor antagonism in part, it might be expected to have a different profile.
  • the D 2 receptor has signalling components besides cAMP (Neve, K. A. et al.
  • PDE10A inhibition may negatively modulate rather than directly antagonise dopamine signaling through D 2 receptors. This may reduce the risk of the extrapyrimidal side effects that are seen with strong D 2 antagonism. Conversely, PDE10A inhibition may have some effects not seen with D 2 receptor antagonism. PDE10A is also expressed in Di receptors expressing striatal neurons (Seeger, T. F. et al. Brain Research, 2003, 985, 1 13-126).
  • Di receptor agonism leads to stimulation of adenylate cyclase and resulting increase in cAMP levels
  • PDE10A inhibition is likely to also have effects that mimic Di receptor agonism.
  • PDE10A inhibition will not only increase cAMP in cells, but might also be expected to increase cGMP levels, since PDE10A is a dual specificity phosphodiesterase.
  • cGMP activates a number of target protein in cells like cAMP and also interacts with the cAMP signalling pathways.
  • PDE10A inhibition is likely to mimic D 2 receptor antagonism in part and therefore has antipsychotic effect, but the profile might differ from that observed with classical D 2 receptor antagonists.
  • the PDE10A inhibitor papaverine is shown to be active in several antipsychotic models.
  • Papaverine potentiated the cataleptic effect of the D 2 receptor antagonist haloperidol in rats, but did not cause catalepsy on its own (WO 03/093499).
  • Papaverine reduced hyperactivity in rats induced by PCP, while reduction of amphetamine induced hyperactivity was insignificant (WO 03/093499).
  • WO 03/093499 further discloses the use of selective PDE10 inhibitors for the treatment of associated neurologic and psychiatric disorders.
  • PDE10A inhibition reverses subchronic PCP-induced deficits in attentional set-shifting in rats (Rodefer et al. Eur. J. Neurosci. 2005, 4, 1070-1076). This model suggests that PDE10A inhibition might alleviate cognitive deficits associated with schizophrenia.
  • the tissue distribution of PDE10A indicates that PDE10A inhibitors can be used to raise levels of cAMP and/or cGMP within cells that express the PDE10 enzyme, especially neurons that comprise the basal ganglia, and the PDE10A inhibitors of the invention would therefore be useful in treating a variety of associated neuropsychiatric conditions involving the basal ganglia such as neurological and psychiatric disorders, schizophrenia, bipolar disorder, obsessive compulsive disorder, and the like, and may have the benefit of not possessing unwanted side effects, which are associated with the current therapies on the market.
  • PDE10A inhibitors may be useful for treatment of obesity and non-insulin dependent diabetes.
  • EP 1250923 discloses the use of selective PDE10 inhibitors in general, and papaverine in particular, for the treatment of certain neurologic and psychiatric disorders.
  • WO09/152825 discloses phenylimidazole derivatives as PDE10A enzyme inhibitors useful for the treatment of various diseases, including CNS related diseases such as schizophrenia.
  • Pyrrolodihydroisoquinolines and variants thereof are disclosed as inhibitors of PDE10 in WO 05/03129 and WO 05/02579.
  • Piperidinyl-substituted quinazolines and isoquinolines that serve as PDE10 inhibitors are disclosed in WO 05/82883.
  • WO 06/1 1040 discloses substituted quinazoline and isoquinoline compounds that serve as inhibitors of PDE10.
  • US 20050182079 discloses substituted tetrahydroisoquinolinyl derivatives of quinazoline and isoquinoline that serve as effective phosphodiesterase (PDE) inhibitors.
  • PDE phosphodiesterase
  • US 20060019975 discloses piperidine derivatives of quinazoline and isoquinoline that serve as effective phosphodiesterase (PDE) inhibitors.
  • US 20060019975 also relates to compounds that are selective inhibitors of PDE10.
  • WO 06/028957 discloses cinnoline derivatives as inhibitors of phosphodiesterase type 10 for the treatment of psychiatric and neurological syndromes.
  • these disclosures do not pertain to the compound of the invention, which are structurally unrelated to any of the known PDE10 inhibitors (Kehler, J. et al. Expert Opin. Ther. Patents 2007, 17, 147-158).
  • the compound of the invention proves to be efficient PDE10A enzyme inhibitors and an in vivo active compound that reverses the PCP induced hyperactivity and may thus offer alternatives to current marketed treatments for neurodegenerative and/or psychiatric disorders, which are not efficacious in all patients. Hence, there remains a need for alternative methods of treatment.
  • the objective of the invention is to provide compounds that are selective PDE10A enzyme inhibitors.
  • a further objective of the invention is to provide compounds that have such activity, and have good, preferably improved, solubility, metabolic stability and/or bioavailability compared to prior art compounds.
  • Another objective of the invention is to provide an effective treatment, in particular long- term treatment, of a human patient, without causing the side effects typically associated with current therapies for neurological and psychiatric disorders.
  • the invention relates to com ounds of formula I:
  • het 2 also denoted het-2) is selected from the group consisting of
  • L is a linker selected from the group consisting of
  • R1 is selected from the group consisting of H; C1 -C6 alkyl such as methyl, ethyl, 1 -propyl, 2-propyl, isobutyl n-butyl, sec-butyl or tert-butyl; C1 -C6 alkyl(C3- C8)cycloalkyl such as cyclopropylmethyl, and wherein * denotes the attachment point, as well as tautomers and pharmaceutically acceptable acid addition salts of the compound of the invention.
  • HET-2 in the compound of the invention is selected from the group consisti
  • R1 is CH 3 , in particular R1 is CH 3 if HET-2 is selected from the group consisting of
  • the compound of the present invention is selected from the group consisting of N-Methyl-N-pyridin-4-yl-4-(quinolin-2-ylmethoxy)-benzamide, N- (benzo[d]thiazol-6-yl)-N-methyl-4-(quinolin-2-ylmethoxy)benzamide, N-(benzo[d]oxazol- 6-yl)-N-methyl-4-(quinolin-2-ylmethoxy)benzamide, N-(imidazo[1 ,2-a]pyridin-6-yl)-N- methyl-4-(quinolin-2-ylmethoxy)benzamide, N-Methyl-4-(quinolin-2-ylmethoxy)-N- [1 ,2,4]triazolo[1 ,5-a]pyridin-6-yl-benzamide, N-([1 ,2,4]triazolo[1 ,5-a]pyridin-7-yl)
  • the compound of the invention is selected from the group consisting of N-(benzo[d]thiazol-6-yl)-N-methyl-4-(quinolin-2-ylmethoxy)benzamide, 5- Pyridin-3-yl-1 H-pyrazole-3-carboxylic acid methyl-[4-(quinolin-2-ylmethoxy)-phenyl]- amide, 5-Pyridin-4-yl-1 H-pyrazole-3-carboxylic acid methyl-[4-(quinolin-2-ylmethoxy)- phenyl]-amide, and benzothiazole-6-carboxylic acid methyl-[4-(quinolin-2-ylmethoxy)- phenyl]-amide.
  • the invention further provides the compound of the invention, or a pharmaceutically acceptable acid addition salt thereof, for use as a medicament.
  • the invention provides a pharmaceutical composition
  • a pharmaceutical composition comprising the compound of the invention and a pharmaceutically acceptable carrier, diluent or excipient.
  • the invention further provides the use of the compound of the invention for the preparation of a medicament for the treatment of a neurodegenerative or psychiatric disorder.
  • the invention further provides the compound of the invention for use as a medicament.
  • the invention further provides the compounds of the invention for the treatment of a psychiatric disorder selected from the group consisting of schizophrenia, for example of the paranoid, disorganized, catatonic, undifferentiated, or residual type; schizophreniform disorder; schizoaffective disorder, for example of the delusional type or the depressive type; delusional disorder; bipolar disorder, for example bipolar I disorder, bipolar II disorder, and cyclothymic disorder; substance-induced psychotic disorder, for example psychosis induced by alcohol, amphetamine, cannabis, cocaine, hallucinogens, inhalants, opioids, or phencyclidine; personality disorder of the paranoid type; and personality disorder of the schizoid type.
  • a psychiatric disorder selected from the group consisting of schizophrenia, for example of the paranoid, disorganized, catatonic, undifferentiated, or residual type; schizophreniform disorder; schizoaffective disorder, for example of the delusional type or the depressive type
  • the invention provides a method of treating a patient suffering from a neurodegenerative disorder, comprising administering to the patient the compound of the invention.
  • the invention provides a method of treating a patient suffering from a psychiatric disorder, comprising administering to the patient the compound of the invention.
  • the invention provides a method of treating a patient suffering from a drug addiction, such as an alcohol, amphetamine, cocaine, or opiate addiction comprising administering to the patient the compound of the invention.
  • the invention also comprises salts of the compounds the invention, typically, pharmaceutically acceptable salts.
  • Such salts include pharmaceutically acceptable acid addition salts.
  • Acid addition salts include salts of inorganic acids as well as organic acids.
  • suitable inorganic acids include hydrochloric, hydrobromic, hydroiodic, phosphoric, sulfuric, sulfamic, nitric acids and the like.
  • suitable organic acids include formic, acetic, trichloroacetic, trifluoroacetic, propionic, benzoic, cinnamic, citric, fumaric, glycolic, itaconic, lactic, methanesulfonic, maleic, malic, malonic, mandelic, oxalic, picric, pyruvic, salicylic, succinic, methane sulfonic, ethanesulfonic, tartaric, ascorbic, pamoic, bismethylene salicylic, ethanedisulfonic, gluconic, citraconic, aspartic, stearic, palmitic, EDTA, glycolic, p- aminobenzoic, glutamic, benzenesulfonic, p-toluen
  • the compound of this invention may exist in unsolvated as well as in solvated forms with pharmaceutically acceptable solvents such as water, ethanol and the like.
  • pharmaceutically acceptable solvents such as water, ethanol and the like.
  • the solvated forms are considered equivalent to the unsolvated forms for the purposes of this invention.
  • the invention further provides a pharmaceutical composition comprising the compound of the invention, alone or in combination with another active ingredient, and a pharmaceutically acceptable carrier or diluent.
  • the invention also provides a pharmaceutical composition comprising the compound of the invention and a pharmaceutically acceptable carrier or diluent.
  • the compound of the invention may be administered alone or in combination with pharmaceutically acceptable carriers, diluents or excipients, in either single or multiple doses.
  • pharmaceutical compositions according to the invention may be formulated with pharmaceutically acceptable carriers or diluents as well as any other known adjuvants and excipients in accordance with conventional techniques such as those disclosed in Remington: The Science and Practice of Pharmacy, 21 th Edition, Gennaro, Ed., Mack Publishing Co., Easton, PA, 2005.
  • compositions may be specifically formulated for administration by any suitable route such as oral, rectal, nasal, pulmonary, topical (including buccal and sublingual), transdermal, intracisternal, intraperitoneal, vaginal and parenteral (including subcutaneous, intramuscular, intrathecal, intravenous and intradermal) routes. It will be appreciated that the route will depend on the general condition and age of the patient to be treated, the nature of the condition to be treated and the active ingredient.
  • compositions for oral administration include solid dosage forms such as capsules, tablets, dragees, pills, lozenges, powders and granules. Where appropriate, the compositions may be prepared with coatings such as enteric coatings or they may be formulated so as to provide controlled release of the active ingredient such as sustained or prolonged release according to methods well known in the art.
  • Liquid dosage forms for oral administration include solutions, emulsions, suspensions, syrups and elixirs.
  • compositions for parenteral administration include sterile aqueous and nonaqueous injectable solutions, dispersions, suspensions or emulsions as well as sterile powders to be reconstituted in sterile injectable solutions or dispersions prior to use.
  • Other suitable administration forms include, but are not limited to, suppositories, sprays, ointments, creams, gels, inhalants, dermal patches and implants.
  • Typical oral dosages of the compound of the invention range from about 0.001 to about 100 mg/kg body weight per day. Typical oral dosages also range from about 0.01 to about 50 mg/kg body weight per day. Typical oral dosages of the compound of the invention further range from about 0.05 to about 10 mg/kg body weight per day.
  • Oral dosages are usually administered in one or more dosages, typically, one to three dosages per day. The exact dosage will depend upon the frequency and mode of administration, the sex, age, weight and general condition of the patient treated, the nature and severity of the condition treated and any concomitant diseases to be treated and other factors evident to those skilled in the art.
  • the compositions may also be presented in a unit dosage form by methods known to those skilled in the art.
  • a typical unit dosage form for oral administration may contain from about 0.01 to about 1000 mg, from about 0.05 to about 500 mg, or from about 0.5 mg to about 200 mg of the compound of the invention.
  • parenteral routes such as intravenous, intrathecal, intramuscular and similar administration, typical doses are in the order of half the dose employed for oral administration.
  • the invention also provides a process for making a pharmaceutical composition
  • a pharmaceutical composition comprising admixing the compound of the invention, alone or in combination with another active ingredient, and at least one pharmaceutically acceptable carrier or diluent.
  • the compound of this invention is generally utilized as the free substance or as a pharmaceutically acceptable salt thereof.
  • solutions of the compound of the invention in sterile aqueous solution aqueous propylene glycol, aqueous vitamin E or sesame or peanut oil may be employed.
  • aqueous solutions should be suitably buffered if necessary and the liquid diluent first rendered isotonic with sufficient saline or glucose.
  • the aqueous solutions are particularly suitable for intravenous, intramuscular, subcutaneous and intraperitoneal administration.
  • the compound of the invention may be readily incorporated into known sterile aqueous media using standard techniques known to those skilled in the art.
  • Suitable pharmaceutical carriers include inert solid diluents or fillers, sterile aqueous solutions and various organic solvents.
  • solid carriers include lactose, terra alba, sucrose, cyclodextrin, talc, gelatin, agar, pectin, acacia, magnesium stearate, stearic acid and lower alkyl ethers of cellulose.
  • liquid carriers include, but are not limited to, syrup, peanut oil, olive oil, phospholipids, fatty acids, fatty acid amines, polyoxyethylene and water.
  • the carrier or diluent may include any sustained release material known in the art, such as glyceryl monostearate or glyceryl distearate, alone or mixed with a wax.
  • sustained release material such as glyceryl monostearate or glyceryl distearate
  • the pharmaceutical compositions formed by combining the compound of the invention and a pharmaceutically acceptable carrier are then readily administered in a variety of dosage forms suitable for the disclosed routes of administration.
  • the compositions may conveniently be presented in unit dosage form by methods known in the art of pharmacy.
  • compositions of the invention suitable for oral administration may be presented as discrete units such as capsules or tablets, each containing a predetermined amount of the active ingredient, and optionally a suitable excipient.
  • the orally available compositions may be in the form of a powder or granules, a solution or suspension in an aqueous or non-aqueous liquid, or an oil-in-water or water-in-oil liquid emulsion.
  • the preparation may be tabletted, placed in a hard gelatin capsule in powder or pellet form or it may be in the form of a troche or lozenge.
  • the amount of solid carrier will vary widely but will range from about 25 mg to about 1 g per dosage unit.
  • the preparation may be in the form of a syrup, emulsion, soft gelatin capsule or sterile injectable liquid such as an aqueous or non-aqueous liquid suspension or solution.
  • the pharmaceutical compositions of the invention may be prepared by conventional methods in the art. For example, tablets may be prepared by mixing the active ingredient with ordinary adjuvants and/or diluents and subsequently compressing the mixture in a conventional tabletting machine prepare tablets.
  • adjuvants or diluents comprise: corn starch, potato starch, talcum, magnesium stearate, gelatin, lactose, gums, and the like. Any other adjuvants or additives usually used for such purposes such as colorings, flavorings, preservatives etc. may be used provided that they are compatible with the active ingredients.
  • the compound of the invention is a PDE10A enzyme inhibitor and as such useful to treat associated neurological and psychiatric disorders.
  • the invention thus provides the compound of the invention as well as a pharmaceutical composition containing such a compound, for use in the treatment of a neurodegenerative disorder, psychiatric disorder or drug addiction in patients; wherein the neurodegenerative disorder is selected from the group consisting of Alzheimer's disease, multi-infarct dementia, alcoholic dementia or other drug-related dementia, dementia associated with intracranial tumors or cerebral trauma, dementia associated with Huntington's disease or Parkinson's disease, or AIDS-related dementia; delirium; amnestic disorder; post-traumatic stress disorder; mental retardation; a learning disorder, for example reading disorder, mathematics disorder, or a disorder of written expression; attention-deficit/hyperactivity disorder; and age-related cognitive decline; and wherein the psychiatric disorder is selected from the group consisting of schizophrenia, for example of the paranoid, disorganized, catatonic, undifferentiated, or residual type;
  • the compound of the invention may be used in combination with one or more other drugs in the treatment of diseases or conditions for which the compound of the invention have utility, where the combination of the drugs together is safer or more effective than either drug alone. Additionally, the compound of the invention may be used in combination with one or more other drugs that treat, prevent, control, ameliorate, or reduce the risk of side effects or toxicity of the compound of the invention. Such other drugs may be administered, by a route and in an amount commonly used therefore, contemporaneously or sequentially with the compound of the invention. Accordingly, the pharmaceutical compositions of the invention include those that contain one or more other active ingredients, in addition to the compound of the invention.
  • the combinations may be administered as part of a unit dosage form combination product, or as a kit or treatment protocol wherein one or more additional drugs are administered in separate dosage forms as part of a treatment regimen.
  • the invention provides a method of treating a patient suffering from a neurodegenerative disorder selected from a cognition disorder or movement disorder, which method comprises administering to the patient the compound of the invention.
  • This invention also provides a method of treating a patient suffering from a psychiatric disorder, which method comprises administering to the patient the compound of the invention.
  • psychiatric disorders that can be treated according to the invention include, but are not limited to, schizophrenia, for example of the paranoid, disorganized, catatonic, undifferentiated, or residual type; schizophreniform disorder; schizoaffective disorder, for example of the delusional type or the depressive type; delusional disorder; substance-induced psychotic disorder, for example psychosis induced by alcohol, amphetamine, cannabis, cocaine, hallucinogens, inhalants, opioids, or phencydidine; personality disorder of the paranoid type; and personality disorder of the schizoid type; anxiety disorder is selected from panic disorder; agoraphobia; a specific phobia; social phobia; obsessive-compulsive disorder; post-traumatic stress disorder; acute stress disorder; and generalized anxiety disorder.
  • the compound of the invention may be administered in combination with at least one neuroleptic agent (which may be a typical or an atypical antipsychotic agent) to provide improved treatment of psychiatric disorders such as schizophrenia.
  • at least one neuroleptic agent which may be a typical or an atypical antipsychotic agent
  • the combinations, uses and methods of treatment of the invention may also provide advantages in treatment of patients who fail to respond adequately or who are resistant to other known treatments.
  • the invention thus provides a method of treating a patient suffering from a psychiatric disorder, such as schizophrenia, which method comprises administering to the patient the compound of the invention, either alone or as combination therapy together with at least one neuroleptic agent.
  • a psychiatric disorder such as schizophrenia
  • neuroleptic agent refers to drugs, which have the effect on cognition and behaviour of antipsychotic agent drugs that reduce confusion, delusions, hallucinations, and psychomotor agitation in patients with psychoses.
  • neuroleptic agents include, but are not limited to: typical antipsychotic drugs, including phenothiazines, further divided into the aliphatics, piperidines, and piperazines, thioxanthenes (e.g., cisordinol), butyrophenones (e.g., haloperidol), dibenzoxazepines (e.g., loxapine), dihydroindolones (e.g., molindone), diphenylbutylpiperidines (e.g., pimozide), and atypical antipsychotic drugs, including benzisoxazoles (e.g., risperidone), sertindole, olan
  • Particularly preferred neuroleptic agents for use in the invention are sertindole, olanzapine, risperidone, quetiapine, aripiprazole, haloperidol, clozapine, ziprasidone and osanetant.
  • the invention further provides a method of treating a patient suffering from a cognition disorder, which method comprises administering to the patient the compound of the invention.
  • cognition disorders that can be treated according to the invention include, but are not limited to, Alzheimer's disease, multi-infarct dementia, alcoholic dementia or other drug-related dementia, dementia associated with intracranial tumors or cerebral trauma, dementia associated with Huntington's disease or Parkinson's disease, or AIDS-related dementia; delirium; amnestic disorder; posttraumatic stress disorder; mental retardation; a learning disorder, for example reading disorder, mathematics disorder, or a disorder of written expression; attention- deficit/hyperactivity disorder; and age-related cognitive decline.
  • This invention also provides a method of treating a movement disorder in a patient, which method comprises administering to the patient the compound of the invention.
  • movement disorders that can be treated according to the invention include, but are not limited to, Huntington's disease and dyskinesia associated with dopamine agonist therapy.
  • This invention further provides a method of treating a movement disorder selected from Parkinson's disease and restless leg syndrome, which comprises administering to the patient the compound of the invention.
  • This invention also provides a method of treating a mood disorder, which method comprises administering to the patient the compound of the invention.
  • mood disorders and mood episodes that can be treated according to the invention include, but are not limited to, major depressive episode of the mild, moderate or severe type, a manic or mixed mood episode, a hypomanic mood episode; a depressive episode with a typical features; a depressive episode with melancholic features; a depressive episode with catatonic features; a mood episode with postpartum onset; post-stroke depression; major depressive disorder; dysthymic disorder; minor depressive disorder; premenstrual dysphoric disorder; post-psychotic depressive disorder of schizophrenia; a major depressive disorder superimposed on a psychotic disorder such as delusional disorder or schizophrenia; a bipolar disorder, for example bipolar I disorder, bipolar II disorder, and cyclothymic disorder. It is understood that a mood disorder is a psychiatric disorder.
  • This invention further provides a method of treating a drug addiction, for example an alcohol, amphetamine, cocaine, or opiate addiction, in a patient which method comprises administering to said patient an amount of the compound of the invention effective in treating drug addiction.
  • a drug addiction for example an alcohol, amphetamine, cocaine, or opiate addiction
  • drug addiction means an abnormal desire for a drug and is generally characterized by motivational disturbances such a compulsion to take the desired drug and episodes of intense drug craving.
  • Drug addiction is widely considered a pathological state.
  • the disorder of addiction involves the progression of acute drug use to the development of drug-seeking behavior, the vulnerability to relapse, and the decreased, slowed ability to respond to naturally rewarding stimuli.
  • DSM-IV The Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) has categorized three stages of addiction: preoccupation/anticipation, binge/intoxication, and withdrawal/negative affect. These stages are characterized, respectively, everywhere by constant cravings and preoccupation with obtaining the substance; using more of the substance than necessary to experience the intoxicating effects; and experiencing tolerance, withdrawal symptoms, and decreased motivation for normal life activities.
  • This invention further provides a method of treating a disorder comprising as a symptom a deficiency in attention and/or cognition in a patient which method comprises administering to said patient an amount of the compound of the invention effective in treating said disorder.
  • disorders that can be treated according to the invention are obsessive/compulsive disorders, Tourette's syndrome and other tic disorders.
  • a “neurodegenerative disorder or condition” refers to a disorder or condition that is caused by the dysfunction and/or death of neurons in the central nervous system.
  • the treatment of these disorders and conditions can be facilitated by administration of an agent which prevents the dysfunction or death of neurons at risk in these disorders or conditions and/or enhances the function of damaged or healthy neurons in such a way as to compensate for the loss of function caused by the dysfunction or death of at-risk neurons.
  • neurotrophic agent refers to a substance or agent that has some or all of these properties.
  • neurodegenerative disorders and conditions that can be treated according to the invention include, but are not limited to, Parkinson's disease; Huntington's disease; dementia, for example Alzheimer's disease, multi-infarct dementia, AIDS- related dementia, and Fronto temperal Dementia; neurodegeneration associated with cerebral trauma; neurodegeneration associated with stroke, neurodegeneration associated with cerebral infarct; hypoglycemia-induced neurodegeneration; neurodegeneration associated with epileptic seizure; neurodegeneration associated with neurotoxin poisoning; and multi-system atrophy.
  • Parkinson's disease Huntington's disease
  • dementia for example Alzheimer's disease, multi-infarct dementia, AIDS- related dementia, and Fronto temperal Dementia
  • neurodegeneration associated with cerebral trauma neurodegeneration associated with stroke, neurodegeneration associated with cerebral infarct
  • hypoglycemia-induced neurodegeneration neurodegeneration associated with epileptic seizure
  • neurodegeneration associated with neurotoxin poisoning and multi-system atrophy.
  • the neurodegenerative disorder or condition involves neurodegeneration of striatal medium spiny neurons in a patient.
  • the neurodegenerative disorder or condition is Huntington's disease.
  • the invention provides a method of treating a patient to reduce body fat or body weight, or to treat non-insulin demanding diabetes mellitus (NIDDM), metabolic syndrome, or glucose intolerance, comprising administering to the patient in need thereof the compound of the invention.
  • NIDDM non-insulin demanding diabetes mellitus
  • the patient is overweight or obese and the compound of the invention is administered orally.
  • the method further comprising administering a second therapeutic agent to the patient, preferably an anti-obesity agent, e.g., rimonabant, orlistat, sibutramine, bromocriptine, ephedrine, leptin, pseudoephedrine, or peptide YY3-36, or analogs thereof.
  • an anti-obesity agent e.g., rimonabant, orlistat, sibutramine, bromocriptine, ephedrine, leptin, pseudoephedrine, or peptide YY3-
  • metabolic syndrome refers to a constellation of conditions that place people at high risk for coronary artery disease. These conditions include type 2 diabetes, obesity, high blood pressure, and a poor lipid profile with elevated LDL ("bad”) cholesterol, low HDL ("good”) cholesterol, and elevated triglycerides. All of these conditions are associated with high blood insulin levels.
  • the fundamental defect in the metabolic syndrome is insulin resistance in both adipose tissue and muscle. All references, including publications, patent applications and patents, cited herein are hereby incorporated by reference in their entirety and to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety (to the maximum extent permitted by law).
  • X can be hydroxyl or a suitable leaving group like e.g. chloride.
  • This reaction is typically carried out in a solvent such as, for example, dichloromethane, optionally in the presence of a carbonate base or an amine base, at a temperature range of from about 0° C to about 200° C.
  • suitable solvents include toluene, benzene, chloroform, dioxane, acetonitrile, ethyl acetate, 2-propanol and xylene.
  • the reactants are heated under reflux in a solvent mixture of toluene and 2-propanol for a period of from about 2 hours to about 24 hours, optionally using a microwave oven.
  • the reaction depicted in Scheme 1 can also conveniently be carried out by using a coupling reagent like e.g. Dicyclohexyl carbodiimide (DCC) when X is a hydroxyl group.
  • a coupling reagent like e.g. Dicyclohexyl carbodiimide (DCC) when X is a hydroxyl group.
  • DCC Dicyclohexyl carbodiimide
  • a mixture of a compound of formula 2, a compound of formula 3 and a suitable coupling reagent is stirred at room temperature for 24 hours followed by purification of the product by preparative HPLC to obtain the desired product.
  • X can be hydroxyl or a suitable leaving group like e.g. chloride.
  • This reaction is typically carried out in a solvent such as, for example, dichloromethane, optionally in the presence of a carbonate base or an amine base, at a temperature range of from about 0° C to about 200° C.
  • suitable solvents include toluene, benzene, chloroform, dioxane, acetonitrile, ethyl acetate, 2-propanol and xylene.
  • the reactants are heated under reflux in a solvent mixture of toluene and 2-propanol for a period of from about 2 hours to about 24 hours, optionally using a microwave oven.
  • the reaction depicted in Scheme 2 can also conveniently be carried out by using a coupling reagent like e.g. Dicyclohexyl carbodiimide (DCC) when X is a hydroxyl group.
  • a coupling reagent like e.g. Dicyclohexyl carbodiimide (DCC) when X is a hydroxyl group.
  • DCC Dicyclohexyl carbodiimide
  • a mixture of a compound of formula 4, a compound of formula 5 and a suitable coupling reagent is stirred at room temperature for 24hoursfollowed by purification of the product by preparative HPLC to obtain the desired product.
  • Starting materials of the fomula 4 can be prepared by methods described in e.g. US 2007155779, Alexandria Journal of Pharmaceutical Sciences (1991 ), 5(1 ), 16-20; Journal of Medicinal Chemistry (2009), 52(16), 5188-5196; and Journal of Medicinal Chemistry (1991 ), 34(5), 1704-7.
  • Starting materials of the formula 5 are either commercially available or can be prepared by methods known in the art
  • a PE Sciex API 150EX instrument equipped with atmospheric pressure photo ionisation and a Shimadzu LC-8A SLC-10A LC system was used.
  • Method: Linear gradient elution with A:B 90:10 to 0:100 in 2.4 minutes and with a flow rate of 3.3 mL/min.
  • N-(4-hydroxyphenyl)-N-methylbenzo[d]thiazole-6-carboxannide 200 mg, 0.7 mmol
  • 2- (chloromethyl)-l -methyl-1 H-benzo[d]imidazole 160 mg, 0.77 mmol
  • cesium carbonate 460 mg, 1 .4 mmol
  • potassium iodide 230 mg, 1 .4 mmol
  • the cooled reaction was mixed with 100 mL H 2 O and extracted with 1 X 100 mL EtOAc, 2 X 50 mL EtOAc, and the combined organic phases were dried over MgSO 4 , filtered and the solvent removed in vacuum.
  • the extract was purified by flash chromatography on a 24 g silica column (eluent: 100% n-heptane to 100% EtOAc) to yield the product (289 mg, 96 %) as a white solid.
  • Active PDE10A enzyme is prepared in a number of ways for use in PDE assays (Loughney, K. et al. Gene 1999, 234, 109-1 17; Fujishige, K. et al. Eur J Biochem. 1999, 266, 1 1 18-1 127 and Soderling, S. et al. Proc. Natl. Acad. Sci. 1999, 96, 7071 -7076).
  • PDE10A can be expressed as full-length proteins or as truncated proteins, as long as they express the catalytic domain.
  • PDE10A can be prepared in different cell types, for example insect cells or E. coli.
  • catalytcally active PDE10 A enzymes were prepared the following way: The catalytic domain of human PDE10A (amino acids 440- 779 from the sequence with accession number NP 006652) was amplified from total human brain total RNA by standard RT-PCR and cloned into the BamH1 and Xho1 sites of the pET28a vector (Novagen). Expression in coli was performed according to standard protocols. Briefly, the expression plasmids were transformed into the BL21 (DE3) E. coli strain, and 50 ml_ cultures inoculated with the cells allowed to grow to an OD600 of 0.4-0.6 before protein expression was induced with 0.5mM IPTG.
  • the assay was performed in 60 uL assay buffer (50 mM HEPES pH 7.6; 10mM MgCI 2 ; 0.02% Tween20) containing enough PDE10A to convert 20-25% of 10 nM 3 H-cAMP and varying amounts of inhibitors. Reactions were initiated by addition of the cyclic nucleotide substrate. Following 1 hour incubation at room temperature the reactions were terminated by addition of 15 uL 8 mg/mL yttrium silicate SPA beads (Amersham). The beads were allowed to settle for one hr in the dark before the plates were counted in a Wallac 1450 Microbeta counter. IC 5 o values were calculated by non linear regression using XLfit (IDBS).
  • mice Male mice (NMRI, Charles River) weighing 20-25g were used. Eight mice were used in each group receiving the test compound (5 mg/kg) plus PCP (2.3 mg/kg) including the parallel control groups receiving the vehicle of the test compound plus PCP or vehicle injections only. The injection volume was 10 ml/kg. The experiment was made in normal light conditions in an undisturbed room. The test substance was injected per oss 60 min before injection of PCP, which is administered subcutaneous.
  • mice Immediately after injection of PCP the mice were placed individually in special designed test cage (20 cm x 32 cm). The activity was measured by 5X8 infrared light sources and photocells spaced by 4 cm. The light beams cross the cage 1 .8 cm above the bottom of the cage. Recording of a motility count requires interruption of adjacent light beams, thus avoiding counts induced by stationary movements of the mice.
  • the mean motility induced by vehicle treatment in the absence of PCP was used as baseline.
  • the 100 per cent effect of PCP was accordingly calculated to be total motility counts minus baseline.
  • the response in groups receiving test compound was thus determined by the total motility counts minus baseline, expressed in per cent of the similar result recorded in the parallel PCP control group.
  • the per cent responses were converted to per cent reversal of the PCP induced hyperactivity.
  • N-Methyl-N- pyridin-4-yl-4-(quinolin-2-ylmethoxy)-benzamide has an ED50 of 10 mg/kg and the compound N-Methyl-N-[4-(quinolin-2-ylmethoxy)-phenyl]-isonicotinamide has an ED50 of 61 mg/kg.

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Abstract

La présente invention concerne des composés selon la formule et leur utilisation en tant que principes pharmaceutiques, en particulier pour le traitement de maladies associées au SNC (inhibiteurs de PDE 10A).
PCT/DK2011/050257 2010-07-02 2011-07-01 Dérivés d'arylamide et d'hétéroarylamide utilisés comme inhibiteurs de l'enzyme pde10a WO2012000519A1 (fr)

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WO2012112946A1 (fr) 2011-02-18 2012-08-23 Allergan, Inc. Dérivés de 6,7-dialkoxy-3-isoquinolinol substitués en tant qu'inhibiteurs de la phosphodiestérase 10 (pde10a)
WO2014071044A1 (fr) 2012-11-01 2014-05-08 Allergan, Inc. Dérivés de 6,7-dialcoxy-3-isoquinoline substitués à titre d'inhibiteurs de phosphodiestérase 10 (pde10a)
US9200016B2 (en) 2013-12-05 2015-12-01 Allergan, Inc. Substituted 6, 7-dialkoxy-3-isoquinoline derivatives as inhibitors of phosphodiesterase 10 (PDE 10A)

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
WO2012112946A1 (fr) 2011-02-18 2012-08-23 Allergan, Inc. Dérivés de 6,7-dialkoxy-3-isoquinolinol substitués en tant qu'inhibiteurs de la phosphodiestérase 10 (pde10a)
US8772316B2 (en) 2011-02-18 2014-07-08 Allergan, Inc. Substituted 6,7-dialkoxy-3-isoquinolinol derivatives as inhibitors of phosphodiesterase 10 (PDE10A)
US9670181B2 (en) 2011-02-18 2017-06-06 Allergan, Inc. Substituted 6,7-dialkoxy-3-isoquinolinol derivatives as inhibitors of phosphodiesterase 10 (PDE 10A)
WO2014071044A1 (fr) 2012-11-01 2014-05-08 Allergan, Inc. Dérivés de 6,7-dialcoxy-3-isoquinoline substitués à titre d'inhibiteurs de phosphodiestérase 10 (pde10a)
US9200016B2 (en) 2013-12-05 2015-12-01 Allergan, Inc. Substituted 6, 7-dialkoxy-3-isoquinoline derivatives as inhibitors of phosphodiesterase 10 (PDE 10A)
US9902710B2 (en) 2013-12-05 2018-02-27 Exonhit Therapeutics, Sa Substituted 6, 7-dialkoxy-3-isoquinoline derivatives as inhibitors of phosphodiesterase 10 (PDE 10A)

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