CA2333951A1 - Method for treating neurodegenerative disorders - Google Patents

Method for treating neurodegenerative disorders Download PDF

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CA2333951A1
CA2333951A1 CA002333951A CA2333951A CA2333951A1 CA 2333951 A1 CA2333951 A1 CA 2333951A1 CA 002333951 A CA002333951 A CA 002333951A CA 2333951 A CA2333951 A CA 2333951A CA 2333951 A1 CA2333951 A1 CA 2333951A1
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alkyl
disease
hydrogen
aralkyl
aryl
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CA2333951C (en
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Allen B. Reitz
David A. Demeter
Daniel H. S. Lee
Hoau-Yan Wang
Robert H. Chen
Tina Morgan Ross
Malcolm K. Scott
Carlos R. Plata-Salaman
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Janssen Pharmaceuticals Inc
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    • C07D295/00Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
    • C07D295/04Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
    • C07D295/08Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms
    • C07D295/096Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms with the ring nitrogen atoms and the oxygen or sulfur atoms separated by carbocyclic rings or by carbon chains interrupted by carbocyclic rings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
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    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/13Amines
    • A61K31/135Amines having aromatic rings, e.g. ketamine, nortriptyline
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/535Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines
    • A61K31/53751,4-Oxazines, e.g. morpholine
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P19/00Drugs for skeletal disorders
    • A61P19/02Drugs for skeletal disorders for joint disorders, e.g. arthritis, arthrosis
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P21/00Drugs for disorders of the muscular or neuromuscular system
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P21/00Drugs for disorders of the muscular or neuromuscular system
    • A61P21/02Muscle relaxants, e.g. for tetanus or cramps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00Drugs for disorders of the nervous system
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00Drugs for disorders of the nervous system
    • A61P25/14Drugs for disorders of the nervous system for treating abnormal movements, e.g. chorea, dyskinesia
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00Drugs for disorders of the nervous system
    • A61P25/14Drugs for disorders of the nervous system for treating abnormal movements, e.g. chorea, dyskinesia
    • A61P25/16Anti-Parkinson drugs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00Drugs for disorders of the nervous system
    • A61P25/28Drugs 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00Drugs for disorders of the cardiovascular system
    • A61P9/10Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
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    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C215/00Compounds containing amino and hydroxy groups bound to the same carbon skeleton
    • C07C215/46Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups bound to carbon atoms of at least one six-membered aromatic ring and amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton
    • C07C215/64Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups bound to carbon atoms of at least one six-membered aromatic ring and amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton with rings other than six-membered aromatic rings being part of the carbon skeleton
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    • C07C217/00Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton
    • C07C217/54Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton having etherified hydroxy groups bound to carbon atoms of at least one six-membered aromatic ring and amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton
    • C07C217/74Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton having etherified hydroxy groups bound to carbon atoms of at least one six-membered aromatic ring and amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton with rings other than six-membered aromatic rings being part of the carbon skeleton
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    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C229/00Compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C229/02Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton
    • C07C229/04Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated
    • C07C229/06Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one amino and one carboxyl group bound to the carbon skeleton
    • C07C229/10Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one amino and one carboxyl group bound to the carbon skeleton the nitrogen atom of the amino group being further bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings
    • C07C229/14Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one amino and one carboxyl group bound to the carbon skeleton the nitrogen atom of the amino group being further bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings to carbon atoms of carbon skeletons containing rings
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    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C323/00Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
    • C07C323/23Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton
    • C07C323/24Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
    • C07C323/25Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being acyclic and saturated
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D295/00Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
    • C07D295/04Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
    • C07D295/08Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms
    • C07D295/084Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms with the ring nitrogen atoms and the oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings
    • C07D295/088Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms with the ring nitrogen atoms and the oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings to an acyclic saturated chain
    • 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
    • C07D333/06Heterocyclic 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 only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
    • C07D333/14Radicals substituted by singly bound hetero atoms other than halogen
    • C07D333/20Radicals substituted by singly bound hetero atoms other than halogen by nitrogen atoms
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    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00Compounds containing elements of Groups 5 or 15 of the Periodic System
    • C07F9/02Phosphorus compounds
    • C07F9/28Phosphorus compounds with one or more P—C bonds
    • C07F9/30Phosphinic acids R2P(=O)(OH); Thiophosphinic acids, i.e. R2P(=X)(XH) (X = S, Se)
    • C07F9/32Esters thereof
    • C07F9/3258Esters thereof the ester moiety containing a substituent or a structure which is considered as characteristic
    • C07F9/3282Esters with hydroxyaryl compounds
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    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2602/00Systems containing two condensed rings
    • C07C2602/02Systems containing two condensed rings the rings having only two atoms in common
    • C07C2602/04One of the condensed rings being a six-membered aromatic ring
    • C07C2602/10One of the condensed rings being a six-membered aromatic ring the other ring being six-membered, e.g. tetraline

Abstract

The invention is directed to a method of treating a neurodegenerative disord er in a subject in need thereof which comprises administering to the subject an amount of a compound effective to inhibit the interaction of amyloid-beta wi th alpha-7 nicotinic acetylcholine receptors.

Claims (27)

1.A method of treating a neurodegenerative disorder in a subject in need thereof which comprises administering to the subject an amount of a compound effective to inhibit the binding of an amyloid beta peptide with alpha-7 nicotinic acetylcholine receptors.
2. The method of Claim 1, wherein the alpha-7 nicotinic acetylcholine receptors are human alpha-7 nicotinic acetylcholine receptors.
3. The method of Claim 2, wherein the neurodegenerative disorder is selected from Alzheimer's disease, Pick's disease, diffuse Lewy body disease, progressive supranuclear palsy (Steel-Richardson syndrome), multisystem degeneration (Shy-Drager syndrome), motor neuron diseases including amyotrophic lateral sclerosis, degenerative ataxias, cortical basal degeneration, ALS-Parkinson's-Dementia complex of Guam, subacute sclerosing panencephalitis, Huntington's disease, Parkinson's disease, synucleinopathies, primary progressive aphasia, striatonigral degeneration, Machado-Joseph disease/spinocerebellar ataxia type 3 and olivopontocerebellar degenerations, Gilles De La Tourette's disease, bulbar and pseudobulbar palsy, spinal and spinobulbar muscular atrophy (Kennedy's disease), primary lateral sclerosis, familial spastic paraplegia, Werdnig-Hoffmann disease, Kugelberg-Welander disease, Tay-Sach's disease, Sandhoff disease, familial spastic disease, Wohtfart-Kugelberg-Welander disease, spastic paraparesis, progressive multifocal leukoencephalopathy, and prion diseases (including Creutzfeldt-Jakob, Gerstmann-Straussler-Scheinker disease, Kuru and fatal familial insomnia, age-related dementia, vascular dementia, diffuse white matter disease (Binswanger's disease), dementia of endocrine or metabolic origin, dementia of head trauma and diffuse brain damage, dementia pugilistica or frontal lobe dementia, neurodegenerative disorders resulting from cerebral ischemia or infaction including embolic occlusion and thrombotic occlusion as well as intracranial hemorrhage of any type, intracranial and intravertebral lesions, hereditary cerebral angiopathy, nonneuropathic hereditary amyloid, Down's syndrome, macroglobulinemia, secondary familial Mediterranean fever, Muckle-Wells syndrome, multiple myeloma, pancreatic and cardiac-related amyloidosis, chronic hemodialysis arthropathy, or Finnish and Iowa amyloidosis.
4. The method of Claim 3, wherein the amyloid beta peptide is A.beta.1-42..
5. The method of Claim 3, wherein the neurodegenerative disorder is Alzheimer's disease.
6. The method of Claim 5, wherein the compound inhibits the binding of A.beta.1-42 with the human alpha-7 nicotinic acetylcholine receptor by binding to A.beta.1-42.
7. The method of Claim 3, wherein the compound inhibits the binding of A.beta.1-42 with the human alpha-7 nicotinic acetylcholine receptor by binding to human alpha-7 nicotinic acetylcholine receptors.
8. The method of Claim 3, wherein the compound inhibits the binding of A.beta.1-42 with the human alpha-7 nicotinic acetylcholine receptor by inhibiting aggregation of amyloid beta peptides.
9. The method of Claim 5, wherein the compound is of the formula I
wherein R1 is hydrogen or C1-C4 alkyl;
R2 is selected from hydrogen, C1-C6 alkyl, aryl or C7-C10 aralkyl;
R3 is selected from hydrogen, C1-C8 alkyl, C3-C10 alkenyl, C3-C8 cycloalkylC1-6alkyl, C1-C6 alkoxycarbonylC1-C8 alkyl, C1-C6 alkylthio, heteroarylC1-C4 alkyl, unsubstituted or substituted aryl or unsubstituted or substituted C7-C10 aralkyl wherein the substituent on the aryl or aralkyl are one or more substituents independently selected from the group consisting of halogen, hydroxy, C1-C6 alkyl and unsubstituted or substituted C1-C6 alkoxy wherein the substituents on the alkoxy are one or more substituents independently selected from amino, C1-C6 alkylamino, C1-C6 dialkylamino, pyrrolidinyl, piperidinyl, azepinyl or morpholinyl; or R2 and R3, together with the nitrogen to which they are attached, form a five or six-membered heterocyclic ring selected from pyrrolidinyl, piperidinyl, morpholinyl, thiomorpholinyl or piperazinyl;
R4 is C1-C6 alkyl, aryl, or C7-C10 aralkyl; and R5 and R6 are each independently selected from hydrogen, C1-C6 alkyl, C3-C10 alkenyl, C1-C8 alkylcarbonyl, or diphenylphosphinyl;
and pharmaceutically acceptable salts and prodrugs thereof.
10. A method of treating and/or preventing dementia in an Alzheimer's disease patient which comprises administering to the subject a therapeutically effective amount of a compound which inhibits the binding of an amyloid beta peptide with alpha-7 nicotinic acetylcholine receptors.
11. The method of Claim 10, wherein the amyloid beta peptide is A.beta.l-42 and the alpha-7 nicotinic acetylcholine receptors are human alpha-7 nicotinic acetylcholine receptors.
12. The method of Claim 11, wherein the compound is of the formula I
wherein R1 is hydrogen or C1-C4 alkyl;

R2 is selected from hydrogen, C1-C6 alkyl, aryl or C7-C10 aralkyl;
R3 is selected from hydrogen, C1-C6 alkyl, C3-C10 alkenyl, C3-C8 cycloalkylC1-C6 alkyl, C1-C6 alkoxycarbonylC1-C6 alkyl, C1-C6 alkylthio, heteroarylC1-C4 alkyl, unsubstituted or substituted aryl or unsubstituted or substituted C7-C10 aralkyl wherein the substituent on the aryl or aralkyl are one or more substituents independently selected from the group consisting of halogen, hydroxy, C1-C6 alkyl and unsubstituted or substituted C1-C6 alkoxy wherein the substituents on the alkoxy are one or more substituents independently selected from amino, C1-C6 alkylamino, C1-C6 dialkylamino, pyrrolidinyl, piperidinyl, azepinyl or morpholinyl; or R2 and R3, together with the nitrogen to which they are attached, form a five or six-membered heterocyclic ring selected from pyrrolidinyl, piperidinyl, morpholinyl, thiomorpholinyl or piperazinyl;
R4 is C1-C6 alkyl, aryl, or C7-C10 aralkyl; and R5 and R6 are each independently selected from hydrogen, C1-C6 alkyl, C3-C10 alkenyl, C1-C8 alkylcarbonyl, or diphenylphosphinyl;
and pharmaceutically acceptable salts and prodrugs thereof.
13. A method of improving memory and/or of halting the progression of mental deterioration in an Alzheimer's disease patient which comprises administering to the subject a therapeutically effective amount of a compound to inhibit the binding of an amyloid beta peptide with alpha-7 nicotinic acetylcholine receptors.
14. The method of Claim 13, wherein the amyloid beta peptide is A.beta.1-42 and the alpha-7 nicotinic acetylcholine receptors are human alpha-7 nicotinic acetylcholine receptors.
15. The method of Claim 14, wherein the compound is of the formula I

wherein R1 is hydrogen or C1-C4 alkyl;
R2 is selected from hydrogen, C1-C6 alkyl, aryl or C7-C10 aralkyl;
R3 is selected from hydrogen, C1-C6 alkyl, C3-C10 alkenyl, C3-C8 cycloalkylC1-C6 alkyl, C1-C6 alkoxycarbonylC1-C6 alkyl, C1-C6 alkylthio, heteroarylC1-C4 alkyl, unsubstituted or substituted aryl or unsubstituted or substituted C7-C10 aralkyl wherein the substituent on the aryl or aralkyl are one or more substituents independently selected from the group consisting of halogen, hydroxy, C1-C6 alkyl and unsubstituted or substituted C1-C6 alkoxy wherein the substituents on the alkoxy are one or more substituents independently selected from amino, C1-C6 alkylamino, C1-C6 dialkylamino, pyrrolidinyl, piperidinyl, azepinyl or morpholinyl; or R2 and R3, together with the nitrogen to which they are attached, form a five or six-membered heterocyclic ring selected from pyrrolidinyl, piperidinyl, morpholinyl, thiomorpholinyl or piperazinyl;
R4 is C1-C6 alkyl, aryl, or C7-C10 aralkyl; and R5 and R6s are each independently selected from hydrogen, C1-C6 alkyl, C3-C10 alkenyl, C1-C8 alkylcarbonyl, or diphenylphosphinyl;
and pharmaceutically acceptable salts and prodrugs thereof.
16. A method for identifying compounds which are useful for the treatment of neurodegenerative disorders involving screening test compounds for their ability to block the interaction of a peptide selected from the group consisting of 125¦-A.beta.1-40 A.beta.1-40 and A.beta.1-42 with nicotine acetylcholine receptors.
17. The method of Claim 16, wherein the nicotine acetycholine receptors are human alpha-7, human alpha-8, and/or human alpha-9 nicotinic acetylcholine receptors.
18. The method of Claim 17, wherein the nicotine acetylcholine receptors are human alpha-7 nicotine acetylcholine receptors.
19. The method of Claim 18, wherein the peptide is 124¦-A.beta.1-40.
20. A compound of the formula I:
wherein R1 is hydrogen or C1-C4 alkyl;
R2 is selected from hydrogen, C1-C6 alkyl, aryl or C1-C10 aralkyl;
R3 is selected from hydrogen, C1-C6 alkyl, C3-C10 alkenyl, C3-C8 cycloalkylC1-C6 alkyl, C1-C6 alkoxycarbonylC1-C6 alkyl, C1-C6 alkylthio, heteroarylC1-C4 alkyl, unsubstituted or substituted aryl or unsubstituted or substituted C71-C10 aralkyl wherein the substituent on the aryl or aralkyl are one or more substituents independently selected from the group consisting of halogen, hydroxy, C1-C6 alkyl and unsubstituted or substituted C1-C6 alkoxy wherein the substituents on the alkoxy are one or more substituents independently selected from amino, C1-C6 alkylamino, C1-C6 dialkylamino, pyrrolidinyl, piperidinyl, azepinyl or morpholinyl; or R2 and R3, together with the nitrogen to which they are attached, form a five or six-membered heterocyclic ring selected from pyrrolidinyl, piperidinyl, morpholinyl, thiomorpholinyl or piperazinyl;
R4 is C1-C6 alkyl, aryl, or C7-C10 aralkyl; and R5 and R6s are each independently selected from hydrogen, C1-C6 alkyl, C3-C10 alkenyl, C1-C8 alkylcarbonyl, or diphenylphosphinyl;
and pharmaceutically acceptable salts and prodrugs thereof.
21. The compound of Claim 20, wherein R1, is hydrogen;
R2 is selected from hydrogen or C1-C4 alkyl;
R3 is selected from C1-C4 alkyl, C3-C10 alkenyl, C5-C6 cycloalkylC1-C4 6 alkyl, C1-C6 alkoxycarbonylC1-C4 alkyl, C1-C6 alkylthio, heteroarylC1-C4 alkyl, or unsubstituted or substituted C7-C10 aralkyl wherein the substituent on the aralkyl are one or two substituents independently selected from the group consisting of halogen, hydroxy, C1-C4 alkyl and unsubstituted or substituted C1-C4 alkoxy wherein the substituents on the alkoxy are one or two substituents independently selected from amino, C1-C4 alkylamino, C1-C4 dialkylamino, pyrrolidinyl, or piperidinyl; or R2 and R3, together with the nitrogen to which they are attached, form a morpholinyl ring;
R4 is C1-C4 alkyl; and R5 and R6 are each independently selected from hydrogen, C1-C4 alkyl, C3-C6 alkenyl, C1-C6 alkylcarbonyl, or diphenylphosphinyl;
and pharmaceutically acceptable salts and prodrugs thereof.
22. The compound of Claim 20 of the formula wherein R1 is hydrogen or C1-C4 alkyl;

R2 and R3 are each independently selected from hydrogen, C1-C6 alkyl, aryl or C7-C10 aralkyl; and R4 is C1-C6 alkyl, aryl, or C7-C10 aralkyl;
and pharmaceutically acceptable salts and prodrugs thereof.
23. A compound of Claim 22 which is 5,8-dihydroxy-traps-2-di(N
propylamino)-3-methyl-1,2,3,4-tetrahydronaphthalene and pharmaceutically acceptable salts and prodrugs thereof.
24. A pharmaceutical composition comprising a pharmaceutically acceptable carrier and a compound of Claim 20.
25. A pharmaceutical composition made by mixing a compound of Claim 20 and a pharmaceutically acceptable carrier.
26. A process for making a pharmaceutical composition comprising mixing a compound of Claim 20 and a pharmaceutically acceptable carrier.
27. A method for diagnosing Alzheimer's disease, monitoring the progression and prognosis of Alzheimers disease and/or monitoring the therapeutic efficacy of any intervention or treatment of Alzheimer's disease comprising:
(a) obtaining a test sample from a subject wherein the test sample comprises circulating blood cells and/or olfactory neuroepithelial neuronal cell bodies or their neuronal processes; and (b) analyzing the test sample for interaction of an amyloid beta peptide with alpha-7 nicotinic acetylcholine receptors.
CA2333951A 1998-06-01 1999-05-27 Method for treating neurodegenerative disorders Expired - Lifetime CA2333951C (en)

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US8757798P 1998-06-01 1998-06-01
US60/087,577 1998-06-01
PCT/US1999/011702 WO1999062505A2 (en) 1998-06-01 1999-05-27 Method for treating neurodegenerative disorders

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CA2333951C CA2333951C (en) 2012-02-28

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