WO2003047625A1 - Neural transmission promoters - Google Patents
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- WO2003047625A1 WO2003047625A1 PCT/JP2002/012813 JP0212813W WO03047625A1 WO 2003047625 A1 WO2003047625 A1 WO 2003047625A1 JP 0212813 W JP0212813 W JP 0212813W WO 03047625 A1 WO03047625 A1 WO 03047625A1
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- C07D295/22—Heterocyclic 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 hetero atoms directly attached to ring nitrogen atoms
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Definitions
- the present invention relates to a neurotransmission enhancer containing, as an active ingredient, a compound having an effect of acting on glial cells to increase glutamate concentration in synaptic clefts.
- the present invention also relates to a method for preventing or treating a brain disease using the compound.
- R 1 -A-N-N- -Y- -R 3 (I) wherein R 1 is a lower alkyl, aryl, al (lower) alkoxy, or heterocyclic group, and the above groups are substituted with halogen
- R 2 is a hydrogen atom or lower alkyl
- R 3 is cyclo (lower) alkyl, aryl or ar (lower) alkyl, and the above groups may be substituted by halogen
- N- (4-acetyl-l-piperazinyl) -p-fluorobenzamide hydrate (hereinafter also referred to as FK960). It is disclosed that it can be used as a therapeutic agent for dementia and the like by promoting the release of somatostatin in the brain and exhibiting a synaptic transmission long-term potentiating effect.
- FK960 is known to enhance long-term potentiation (LTP) in the hippocampal CA3 region.
- LTP long-term potentiation
- somatostatin increases presynaptic daltamate release and, as a result, exhibits an LTP-enhancing effect.Since this effect is similar to that of FK960, the LTP-enhancing effect of FK960 is increased by FK960. It is thought to be caused by stimulation of somatostatin release.
- the remission effect of FK 960 on memory impairment in animal models of dementia The detailed mechanism has not been elucidated.
- An object of the present invention is to provide a neurotransmission promoter having a novel mechanism of action and a prophylactic / therapeutic agent for brain disease.
- the present inventors conducted intensive studies on the mechanism of the remission of memory impairment of FK960, and found that administration of FK960 increases the glutamate concentration in the synaptic cleft, and furthermore that FK960 acts on glial cells.
- the present inventors have found that by increasing the concentration of glutamate in the synaptic cleft, and by promoting hippocampal neurotransmission in the dentate gyrus, the present invention has a memory ameliorating effect, thereby completing the present invention.
- the present invention is as follows.
- a neurotransmission promoter comprising, as an active ingredient, a compound having an effect of increasing glutamate concentration in synaptic cleft, wherein the increase in glutamate concentration is due to inhibition of glutamate re-uptake into Darya cells, Nerve transmission enhancer.
- a neurotransmission promoter comprising, as an active ingredient, a compound having an effect of increasing glutamate concentration in synaptic cleft, wherein the increase in glutamate concentration is due to promotion of glutamate release from Darya cells. Transmission enhancer.
- R 1 is lower alkyl, aryl, alk (lower) alkoxy, or heterocyclic group, the above groups may be substituted with halogen
- R 2 is hydrogen atom or lower alkyl
- R 3 is cyclo (lower) alkyl, aryl or ar (lower) alkyl, the above radicals may be substituted by halogen
- A is one CO—, one SO 2 — or lower alkylene
- Y is one CO-, one S0 2 - or a CO Represents NH—.
- the nerve transmission enhancer according to the above (1) or (2) which is a compound having a structure of the following, or a salt, prodrug, or solvate thereof.
- a preventive / therapeutic agent for cerebral disease containing a compound having an action of increasing glutamate concentration in synaptic cleft as an active ingredient, wherein the increase in glutamate concentration is due to inhibition of glutamate reuptake into glial cells. , Prevention and treatment of brain diseases.
- a prophylactic and / or therapeutic agent for cerebral disease containing a compound having an action of increasing glutamate concentration in synaptic cleft as an active ingredient, wherein the increase in glutamate concentration is due to promotion of glutamate release from glial cells, Brain disease prevention and treatment agent.
- the brain disease preventive or therapeutic agent according to (5) or (6) which is selected from the group consisting of defective hyperactivity disorder, excessive daytime sleep (narcoleptic), Parkinson's disease, autism and psychosomatic disorder.
- a compound having an action of increasing the concentration of glutamate in the synaptic cleft is represented by the formula (I):
- R 1 is lower alkyl, aryl, alk (lower) alkoxy, or heterocyclic group, the above groups may be substituted with halogen
- R 2 is hydrogen atom or lower alkyl
- R 3 is cyclo (lower) alkyl, aryl or ar (lower) alkyl, and the above groups may be substituted by halogen
- A is CO—, - S0 2 - or lower alkylene, Y one CO-, one S0 2 - represents a or a CO NH-.
- the preventive / therapeutic agent for brain disease according to any one of the above (5) to (7), which is a compound having the structure:
- the compound having an action of increasing the glutamate concentration in the synaptic cleft is N- (4-acetyl-l-piperazinyl) -l-p-fluorobenzamide hydrate, as described in (5) to (7) above.
- the preventive or therapeutic agent for brain disease according to any one of the above.
- R 1 is lower alkyl, aryl, alk (lower) alkoxy, or heterocyclic group, the above groups may be substituted with halogen
- R 2 is hydrogen atom or lower alkyl
- R 3 is cyclo (lower) alkyl, aryl or ar (lower) alkyl, the above radicals may be substituted by halogen
- A is one CO—, one SO 2 — or lower alkylene
- Y is one CO-, one S0 2 - represents a or a CO NH-.
- the compound having an action of increasing the concentration of glutamic acid in the synaptic cleft is N- (4-acetyl-1-piperajur) -1 ⁇ -fluor mouth benzamide hydrate as described in (10) or (11) above. ) Use of the description. (14) Use of a compound having an effect of increasing glutamate concentration in synaptic cleft for the manufacture of a therapeutic agent for ⁇ prevention of brain disease '', wherein the increase in glutamate concentration is due to inhibition of glutamate reuptake into Darya cells. Yes, use.
- the brain disease is dementia, amnesia, schizophrenia, manic depression, cerebral infarction, head trauma, nicotine withdrawal, spinal cord injury, anxiety, frequent urination, urinary incontinence, myotonic dystrophy, attention deficit
- a compound having an effect of increasing the concentration of glutamate in the synaptic cleft is represented by the formula (I):
- R 1 is lower alkyl, aryl, alk (lower) alkoxy, or heterocyclic group, the above groups may be substituted with halogen
- R 2 is hydrogen atom or lower alkyl
- R 3 is cyclo (lower) alkyl, aryl or ar (lower) alkyl, the above radicals may be substituted by halogen
- A is one CO—, one SO 2 — or lower alkylene
- Y is one CO-, one S0 2 - represents a or a CO NH-.
- a method for promoting neurotransmission comprising administering an effective amount of a compound having an effect of increasing gnoretamic acid concentration in a synaptic cleft to a subject in need of promotion of neurotransmission, comprising: The method wherein the increased concentration is due to enhanced glutamate release from glial cells.
- R 1 is lower alkyl, aryl, alk (lower) alkoxy, or heterocyclic group, the above groups may be substituted with halogen
- R 2 is hydrogen atom or lower alkyl
- R 3 is cyclo (lower) alkyl, aryl or ar (lower) alkyl, and the above groups may be substituted by halogen
- A is one CO—, one SO 2 — or lower alkylene
- Y is one CO-, one S0 2 - represents a or a CO NH-.
- the compound having an action of increasing the concentration of glutamic acid in the synaptic cleft is N- (4-acetinol-1-piperajur) -p-fluorobenzamide hydrate as described in (19) or (20) The method described.
- a method for preventing or treating a brain disease which comprises administering an effective amount of a compound having an effect of increasing glutamate concentration in a synaptic cleft to a patient in need of the prevention or treatment of a brain disease.
- the method wherein the elevated glutamate concentration is due to inhibition of glutamate reuptake into glial cells.
- R 1 is lower alkyl, aryl, alk (lower) alkoxy, or heterocyclic group, the above groups may be substituted with halogen
- R 2 is hydrogen atom or lower alkyl
- R 3 is cyclo (lower) alkyl
- a is one CO-, - S0 2 - a, or lower alkylene
- Y is Represents one CO—, one SO 2 —, or one CO NH—.
- the compound having an action of increasing the concentration of glutamic acid in the synaptic cleft is N- (4-acetyl-1-piperajur) -1 p-fluorobenzamide monohydrate as described in (23) to (25) above. ).
- FIG. 1 is a graph showing the concentration dependence of the glutamic acid concentration increasing effect of FK960.
- FIG. 2 is a graph showing the effect of F ⁇ 960 on glial glutamate transporter.
- Figure 3 shows the effect of increasing the glutamate concentration of FK960 in GLT-1 deficient mice (g1t-1-1 //) and normal mice (g1t-1 + / +) when various inhibitors were added. It is a graph to be compared. ** P ⁇ 0. 01, Fisher's least-significance difference test using 7-power, scatter analysis.
- glial cell has a meaning up to the same extent as that of the term generally used in the art, and specifically includes astrocytes, rare processes. Astrocytes are thought to contribute to the release and reuptake of glutamate, especially the glutamate, ependymal cells, microglia, etc.
- synaptic Interstitial glutamate concentrations are 'regulated' by glial cells.
- the action of increasing the glutamate concentration in the synaptic cleft refers to the ability to increase the glutamate concentration between neurons and neurons (synapses) and / or between neurons and glial cells.
- this increase in glutamate concentration can be achieved by inhibiting the reuptake of glutamate from the synaptic cleft into glial cells and / or promoting the release of glutamate from glial cells into the synaptic cleft.
- the increase in the glutamate concentration in the synaptic cleft may be caused by any one of these, or may be caused by both.
- Methods for evaluating the effect of increasing the glutamate concentration in the synaptic cleft include measuring aggregate spikes (PS) in the dentate gyrus (Brain Research 857 (2000) 317-320), spontaneous miniature excitatory postsynaptic currents in neurons (m EPSC ) And ⁇ post-synaptic glutamatergic response measurement (Molecular Brain Research 97 (2001) 7-12), measurement of glutamate release concentration from glial cells (Biochemical and Biophysical Research Communication 295 (2002) 376-381), and Glutamate transporter current measurement in oocytes expressing vesicular and glial cell glutamate transporters (GLT-1) (Molecular Brain Research 97 (2001) 7-12).
- PS aggregate spikes
- m EPSC spontaneous miniature excitatory postsynaptic currents in neurons
- ⁇ post-synaptic glutamatergic response measurement Molecular Brain Research 97 (2001) 7-12
- the evaluation methods include measurement of aggregated spikes (PS) in the dentate gyrus of rat hippocampal slices, measurement of spontaneous myeitic excitatory postsynaptic current (mEPSC) and postsynaptic glutamatergic responses in rat hippocampal neurons.
- Glutamate release from cultured rat glial cells can be measured, for example, by measuring glutamate transporter current in rat cultured glial cells and glial cell glutamate transporter (GLT-1) -expressing African megafrog oocytes.
- the present invention also provides a method for screening a substance having an action of increasing the glutamate concentration in the synaptic cleft.
- the substance to be screened is not particularly limited as long as it is a substance for which it is desired to evaluate whether or not it has an effect of increasing the glutamate concentration in the synaptic cleft, and any substance may be subjected to the screening. Screening can be performed using the above-described method for evaluating the effect of increasing the glutamate concentration in the synaptic cleft. That is, the target substance can be screened using the action of promoting the release of glutamate from glial cells or suppressing the production of glutamate reuptake into glial cells as an index.
- a screening method using the action of promoting the release of glutamate from glial cells as an indicator includes: i) a step of bringing a medium containing the substance to be screened into contact with glial cells; ii) a medium containing no substance to be screened and a Dahlia cell Iii) a step of evaluating the mixture of the medium obtained in step i) and glial cells for the effect of promoting the release of glutamate from glial cells.iv) a medium and glial obtained in step ii) Evaluating the mixture with the cells for the effect of promoting the release of glutamate from glial cells; and V) comparing the results obtained in step iii) with the results obtained in step iv).
- the medium is not particularly limited as long as the cells can survive and the Darrier cells can be brought into contact with the screening substance.
- an aqueous medium in which the osmotic pressure, pH and the like are adjusted is used.
- the contact between the medium and the glial cells is usually performed under the conditions of a contact time of 20 minutes to 40 minutes and a temperature of 30 to 40 ° C.
- a substance in which daltamate release was significantly enhanced in the comparison step can be used as a substance having an effect of increasing glutamate concentration in the synaptic cleft. More specifically, when the action of promoting the release of glutamate from glial cells is used as an index, the screening can be performed as follows. Glial cells, cells night
- screening can be performed as follows.
- the oocyte expressing 0-1 is transferred to the recording chamber after incubation and continuously perfused at room temperature in standard Ringer's solution or Ringer's solution without Na +.
- Glutamate is applied to the champer in the presence or absence of the screening target substance alone or the screening substance + glutamate transporter inhibitor, and the excitation current is measured by a two-electrode voltage clamp method. Evaluate whether there is a significant difference in the measurement results.
- whole-cell patches prepared from glial cells can be used in the presence of only the substance to be screened or the substance to be screened plus a protein kinase inhibitor or a glutamate transporter inhibitor.
- Glutamic acid is applied in the absence and presence of, and the excitation current is measured by a two-electrode voltage clamp method. Evaluate whether there is a significant difference in the measurement results.
- R 1 is lower alkyl, aryl, alk (lower) alkoxy, or heterocyclic group, the above groups may be substituted with halogen
- R 2 is hydrogen atom or lower alkyl
- : 3 is cyclo (lower) alkyl, aryl or al (lower) Alkyl, wherein the above groups may be substituted by halogen
- A is one CO—, one so 2 — or lower alkylene
- Y represents one CO—, one so 2 — or one CO NH— .
- N- (4-acetyl-l-piperajunole) -p-funoleo-benzamide monohydrate is particularly preferable.
- lower means having from 1 to 6 carbon atoms, unless otherwise specified.
- lower alkyl examples include those having a straight or branched chain, such as methyl, ethyl, propyl, isopropyl, butyl, isoptinole, tert-butyl, pentyl, hexyl and the like. Of these, methyl is preferred.
- aryl examples include phenyl, naphthyl, tolyl, xylyl, mesityl, cumenyl, and the like. Of these, phenyl and naphthyl are preferred.
- Al (lower) alkoxy includes benzyloxy, phenethyloxy, phenylpropoxy, benzhydryloxy, trityloxy and the like.
- heterocyclic group a saturated or unsaturated monocyclic or polycyclic group containing at least one hetero atom such as a nitrogen atom, an oxygen atom or a sulfur atom can be mentioned.
- Preferred examples of the above “heterocyclic group” include a 3- to 8-membered, more preferably a 5- to 6-membered unsaturated heteromonocyclic group containing 1 to 4 nitrogen atoms, for example, pyrrolyl, imidazolyl, pyrazolyl , Pyridyl, pyridyl N-oxide, pyrimidyl, dihydropyridyl, tetrahydropyridyl, pyrazur, pyridazinyl, triazinyl, triazolyl, tetrazinyl, tetrazolyl, etc .; unsaturated condensed heterocyclic groups containing 1 to 5 nitrogen atoms, for example, indolyl, Isoin
- Cyclo (lower) alkyl includes cyclopropyl, cyclobutyl, cyclopentyl and the like.
- Al (lower) alkyl includes benzyl, phenethyl, phenylpropyl, benzhydryl, trityl and the like.
- “Lower alkylene” includes methylene, ethylene, propylene, pentamethylene, hexamethylene and the like.
- lower alkyl, aryl, alk (lower) alkoxy, heterocyclic group, cyclo (lower) alkyl, and alk (lower) alkyl are substituted by halogen atoms (for example, fluorine, chlorine, bromine and iodine). It may be.
- a brain disease that can be prevented and / or treated using a preventive / therapeutic agent for a brain disease containing as an active ingredient a compound having an action of increasing the glutamate concentration in the synaptic cleft increases the glutamate concentration in the synaptic cleft
- the symptoms are not particularly limited as long as the symptoms are prevented or treated.
- dementia eg, senile dementia, Alzheimer's dementia, cerebrovascular dementia, post-traumatic dementia, brain tumor
- Dementia associated with chronic subdural hematoma dementia associated with normal pressure hydrocephalus, dementia meningitis, dementia associated with Parkinson's disease, etc., dementia associated with various conditions
- amnesia schizophrenia Disease, manic depression, cerebral infarction, head trauma, nicotine withdrawal, spinal cord injury, anxiety
- the prophylactic and therapeutic agent of the present invention for preventing and treating frequent urination, urinary incontinence, myotonic dystrophy, attention deficit hyperactivity disorder, excessive daytime sleep (nanorecoleptic), Parkinson's disease, autism, psychosomatic disorder It is valid.
- the agent for promoting neurotransmission and the agent for preventing or treating brain disease of the present invention are also collectively referred to as “the agent of the present invention”.
- the medicament of the present invention when used as a pharmaceutical composition, rectal administration, inhalation, nasal administration, ophthalmic administration, topical (topical) administration, oral or parenteral administration (including subcutaneous, intravenous and intramuscular), brain cord, Direct administration to the affected area, such as spinal fluid, intracerebral cavity, or any dosage form, including solid, semi-solid or liquid dosage forms that contain both organic or inorganic carriers or excipients suitable for inhalation May be.
- the medicament of the present invention is used, for example, in tablets, pellets, troches, capsules, suppositories, talmes, ointments, aerosols, powders for inhalation, solutions, emulsions, suspensions, and other forms suitable for use. It can be formulated with conventional pharmaceutically acceptable and substantially non-toxic carriers or excipients. In addition, auxiliaries, stabilizers, thickeners, coloring agents, and fragrances can be added as necessary.
- the agents of the present invention can be formulated using formulation techniques known in the art. Further, the compound used for the drug of the present invention may be converted into a salt, a prodrug or a solvate thereof according to need, using a method known in the art.
- the “salt” is preferably a biologically acceptable, usually non-toxic salt, and an inorganic acid addition salt (eg, hydrochloride, hydrobromide, sulfate, phosphate, etc.), Organic carboxylic acid or sulfonic acid addition salt (for example, formate, acetate, trifrenole acetate, maleate, tartrate, fumarate, methanesulfonate, benzenesulfonate, toluenesulfonate, etc.), acidic Acid addition salts such as salts with amino acids (eg, aspartic acid, glutamic acid, etc.) are exemplified.
- an inorganic acid addition salt eg, hydrochloride, hydrobromide, sulfate, phosphate, etc.
- Organic carboxylic acid or sulfonic acid addition salt for example, formate, acetate, trifrenole acetate, maleate, tartrate, fumarate, methanesul
- the ⁇ prodrug '' preferably refers to an activity of inhibiting the reuptake of glutamate into Darya cells and / or an activity of increasing the release of glutamate from glial cells by a reaction with an enzyme, gastric acid, or the like in a living body.
- Compound refers to a compound that is converted into a product.
- the “solvate” is, for example, an inclusion compound (eg, hydrate or the like).
- the drug of the present invention can be applied to various mammals such as humans, monkeys, mice, rats, puppies, eptas, canines, puppies, puppies, and the like. It is preferably administered intramuscularly or orally.
- the pharmaceutical agent of the present invention may contain at least an amount that produces a desired effect in the course or condition of a target symptom.
- the dose and administration method of the drug of the present invention may vary depending on the type of compound, prophylaxis and / or the age and condition of each patient to be treated.
- compound (I) when compound (I) is the active ingredient
- S may be administered once to several times.
- Embryonic rat brain (gestation period 18 days) The hippocampus is removed from the brain, the cells are isolated, and the isolated cells are transferred to Neurobasa 1 (GI BCO, GI BCO, .NY; 1:50) supplemented with B27 (GI BCO, .NY; 1:50). NY), 2.5 mM glutamine and 50 M glutamate. In this medium, more than 95% of the isolated cells showed immunoreactivity for the neuron-specific microtubule-associated protein 2 antibody.
- the hippocampus is removed from the neonatal rat, cells are isolated, and the isolated cells are subjected to D-EM (GI BCO, ⁇ ) containing 10% fetal calf serum, 2.5 mM glutamine and 50 ⁇ M glutamate. Cultured. 10 days later, the isolated cells are human glial cell lines Reactive with mouse monoclonal antibody to fibrillary acidic protein (GFAP)
- GFAP fibrillary acidic protein
- GLT-1 deficient mice were generated according to the method of Tanaka et al., Scienc 276, 1699-1702 (1977). Mouse genotype was determined by PCR analysis of genomic DNA isolated from the tail.
- GLT-1 cDNA was obtained by screening a rat brain cDNA library using a 32 P-labeled synthetic oligonucleotide probe designed according to the GLT-1 rooster sequence.
- MRNA encoding GLT-1 was synthesized by in vitro transcription.
- African Tsu Oocytes were isolated from mega El ovaries after kola Genaze (0. 5mgZm 1) treatment, B arth solution (8 8mM N a C l, I mM KC 1, 2. 4mM Na HC0 3, 0. 8 2 mM Mg SO 4, 0. 3 3mM C a (NO 2) 2, 0. 4 1 mM C a C 1 2, 7. 5 mM T ris, pH 7. 6) and over ⁇ incubated in.
- Oocytes were injected with GLT-1 mRNA and incubated at 18 ° C.
- the effect of FK960 on GLT-1 expressed in Xenopus oocytes was tested.
- the oocytes were prepared according to Experimental Example 3, were transferred after incubation 7 days recording Champa one ⁇ - and a standard force El Ringer's solution (1 1 5mM N a C 1 , 2mM KC 1, 1. 8mM C a C 1 2, 5 mM HE PE S, pH 7. 0) or N a + a contained no force El Ringer solution (1 1 5mM L i C 1 , 2 mM KC 1, 5mM Mg C l 2, 5mM HE PE S, 1 mM EGTA, Perfused continuously at room temperature (20-22 ° C) in pH 7.0).
- Glutamate (I mM) -induced whole cell membrane current was inhibited to 60% of the original amplitude by L-transpiper lysine-1,2-dicarponic acid (PDC; glutamate transporter inhibitor) (GLT- The current value reflects glutamate reuptake via 1).
- PDC L-transpiper lysine-1,2-dicarponic acid
- GLT- The current value reflects glutamate reuptake via 1).
- FK960 (10 OnM) reduced the amplitude by 20%. This indicated that FK960 may inhibit glutamate reuptake via GLT_1.
- Glutamate concentration was measured using the GLT-1 deficient mouse and the normal mouse prepared in Experimental Example 2 in accordance with the method of Example 1. In this concentration measurement, no addition was taken as a control, and FK960 alone, FK960 + H_89, FK960 + bisindolylmaleimide (GF; selective PKC inhibitor), FK960 + dihydrokainic acid (DHK; selection) (A GLT-1 inhibitor) and compared the results.
- FIG. 3 shows the results.
- a novel compound containing, as an active ingredient, a compound having an action of inhibiting glutamate reuptake into glial cells and / or increasing glutamate concentration in synaptic clefts by promoting glutamate release from glial cells.
- the present invention provides a novel agent for preventing and treating brain diseases containing a neurotransmission promoter and the compound as an active ingredient, a method for promoting neurotransmission and a method for preventing and treating brain diseases using the compound.
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Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2002354438A AU2002354438A1 (en) | 2001-12-07 | 2002-12-06 | Neural transmission promoters |
| JP2003548880A JPWO2003047625A1 (ja) | 2001-12-07 | 2002-12-06 | 神経伝達促進剤 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001375082 | 2001-12-07 | ||
| JP2001/375082 | 2001-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003047625A1 true WO2003047625A1 (en) | 2003-06-12 |
Family
ID=19183514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2002/012813 Ceased WO2003047625A1 (en) | 2001-12-07 | 2002-12-06 | Neural transmission promoters |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2003047625A1 (ja) |
| AU (1) | AU2002354438A1 (ja) |
| WO (1) | WO2003047625A1 (ja) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991001979A1 (fr) * | 1989-08-02 | 1991-02-21 | Fujisawa Pharmaceutical Co., Ltd. | Nouveaux derives d'aminopiperazine |
| WO1998027930A2 (en) * | 1996-12-24 | 1998-07-02 | Fujisawa Pharmaceutical Co., Ltd. | New use of aminopiperazine derivatives |
| WO2000072834A2 (en) * | 1999-05-28 | 2000-12-07 | Fujisawa Pharmaceutical Co., Ltd. | Agent for expression of long-term potentiation of synaptic transmission comprising compound having brain somatostatin activation property |
| WO2002020016A1 (en) * | 2000-09-06 | 2002-03-14 | Fujisawa Pharmaceutical Co, Ltd | AGENT FOR MODULATING EXCITATORY SYNAPTIC TRANSMISSION COMPRISING A COMPOUND HAVING ALPHA α7 NICOTINIC ACETYLCHOLINE RECEPTOR ACTIVATION PROPERTY |
| WO2002045715A1 (en) * | 2000-12-07 | 2002-06-13 | Fujisawa Pharmaceutical Co., Ltd. | Nootropic effect enhancer |
-
2002
- 2002-12-06 AU AU2002354438A patent/AU2002354438A1/en not_active Abandoned
- 2002-12-06 JP JP2003548880A patent/JPWO2003047625A1/ja active Pending
- 2002-12-06 WO PCT/JP2002/012813 patent/WO2003047625A1/ja not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991001979A1 (fr) * | 1989-08-02 | 1991-02-21 | Fujisawa Pharmaceutical Co., Ltd. | Nouveaux derives d'aminopiperazine |
| WO1998027930A2 (en) * | 1996-12-24 | 1998-07-02 | Fujisawa Pharmaceutical Co., Ltd. | New use of aminopiperazine derivatives |
| WO2000072834A2 (en) * | 1999-05-28 | 2000-12-07 | Fujisawa Pharmaceutical Co., Ltd. | Agent for expression of long-term potentiation of synaptic transmission comprising compound having brain somatostatin activation property |
| WO2002020016A1 (en) * | 2000-09-06 | 2002-03-14 | Fujisawa Pharmaceutical Co, Ltd | AGENT FOR MODULATING EXCITATORY SYNAPTIC TRANSMISSION COMPRISING A COMPOUND HAVING ALPHA α7 NICOTINIC ACETYLCHOLINE RECEPTOR ACTIVATION PROPERTY |
| WO2002045715A1 (en) * | 2000-12-07 | 2002-06-13 | Fujisawa Pharmaceutical Co., Ltd. | Nootropic effect enhancer |
Non-Patent Citations (9)
| Title |
|---|
| HODGKISS J.P. ET AL.: "Effects of FK960, a putative cognitive enhancer, on synaptic transmission in CA1 neurons of rat hippocampus", J. PHARMACOL. EXP. THER., vol. 297, no. 2, May 2001 (2001-05-01), pages 620 - 628, XP002965839 * |
| MATSUOKA N. ET AL.: "FK960(N-(4-acetyl-1-piperazinyl)-p-fluorobenzamide monohydrate), a novel potential antidementia drug, improves visual recognition memory in thesus monkeys: comparison with physostigmine", J. PHARMACOL. EXP. THER., vol. 280, no. 3, 1997, pages 1201 - 1209, XP001015389 * |
| MATSUOKA N. ET AL.: "FK960, a novel potential anti-dementia drug, augments long-term potentiation in mossy fiber-CA3 pathway of guinea-pig hippocampal slices", BRAIN RES., vol. 794, no. 2, 1998, pages 248 - 254, XP002965841 * |
| MATSUYAMA S. ET AL.: "Sustained facilitatory action of FK960 on hippocampal neurotransmission", BRAIN RESEARCH, vol. 857, no. 1-2, 2000, pages 317 - 320, XP002965840 * |
| MORIGUCHI A. ET AL.: "FK960, a potential anti-dementia drug, increases synaptic density in the hippocampal CA3 region of aged rats", BRAIN RES., vol. 958, no. 2, 27 December 2002 (2002-12-27), pages 381 - 389, XP002965837 * |
| SHIN'YA MATSUOKA ET AL.: "Shinki Alzheimer-byo chiryoyaku FK960 no yakuri sayo", SAIBO, vol. 32, no. 4, 2000, pages 147 - 151, XP002966883 * |
| TADA H. ET AL.: "The anti-dementia drug FK960 stimulates glial glutamate release via a PKA pathway", MOL. BRAIN RES., vol. 109, no. 1-2, 30 December 2002 (2002-12-30), pages 63 - 68, XP002965836 * |
| TOZAKI H. ET AL.: "Role of glutamate transporters in the ficilitatory action of FK960 on hippocampal neurotransmission", MOL. BRAIN RES., vol. 97, no. 1, 16 December 2001 (2001-12-16), pages 7 - 12, XP002965838 * |
| YAMAZAKI M. ET AL.: "FK960 M-(4-acetyl-1-piperazinyl)-p-fluorobenzamide monohydrate ameliorates the memory deficits in rats through a novel mechanism of action", J. PHARMACOL. EXP. THER., vol. 279, no. 3, 1996, pages 1157 - 1173, XP002058604 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2002354438A1 (en) | 2003-06-17 |
| JPWO2003047625A1 (ja) | 2005-04-14 |
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