Abstract: The present invention provides a compound represented by formula (I) or a pharmaceutically acceptable salt thereof which has the effect of antagonizing the LPA1 receptor.

Abstract: The present invention provides a novel compound that has anti-RSV activity and that is useful in the prevention or treatment of an infection in which viruses of the subfamily Pneumovirinae, including respiratory syncytial virus (RSV), are involved, or a pharmaceutically acceptable salt thereof. Specifically, the present invention provides a compound represented by formula (I): or a pharmaceutically acceptable salt thereof.

Abstract: The present invention provides a compound represented by formula [I] shown below or a pharmaceutically acceptable salt thereof that has an inhibitory effect on 20-HETE producing enzyme.

Abstract: The present invention provides a new imidazole derivative represented by the following formula or a pharmaceutically acceptable salt thereof which exhibits potent antimicrobial activity based on a LpxC-inhibiting action against gram-negative bacteria such as Pseudomonas aeruginosa, Escherichia coli, and Klebsiella pneumoniae, and their drug-resistant strains. General formula [1] or [2].

Abstract: Provided is a novel process for producing a (2S)-2-[(1H-pyrazol-1-yl)methyl]-1,3-oxazinane derivative. More specifically, provided is a process for producing a (2S)-2-[(1H-pyrazol-1-yl)methyl]-1,3-oxazinane derivative represented by formula (1): the process comprising reacting 3-aminopropan-1-ol with glyoxylic acid.

Abstract: Provided is a novel process for producing a (2S)-2-[(1H-pyrazol-1-yl)methyl]-1,3-oxazinane derivative. More specifically, provided is a process for producing a (2S)-2-[(1H-pyrazol-1-yl)methyl]-1,3-oxazinane derivative represented by formula (1): the process comprising reacting 3-aminopropan-1-ol with glyoxylic acid.

Abstract: The present invention provides a compound represented by formula [I] shown below or a pharmaceutically acceptable salt thereof that has an inhibitory effect on 20-HETE producing enzyme.

Abstract: Provided are: useful novel compounds that exhibit antibacterial activity based on their actions for inhibiting GyrB of DNA gyrase and ParE of topoisomerase IV; and 2(1H)-quinolinone derivatives represented by formula [1]: or pharmaceutically acceptable salts thereof.

Abstract: The present invention provides a compound represented by formula [I?] shown below or a pharmaceutically acceptable salt thereof that has an inhibitory effect on 20-HETE producing enzyme, wherein the structure represented by formula [III] shown below represents any of the structures represented by formula group [IV] shown below, wherein R1 represents a hydrogen atom, a fluorine atom, methyl, etc.; R2, R3, and R4 each independently represent a hydrogen atom, a fluorine atom, or methyl; W represents a single bond, C1-3alkanediyl, or the formula —O—CH2CH2—; and ring A represents (a) substituted C4-6cycloalkyl, (b) substituted 4- to 6-membered saturated nitrogen-containing heterocyclyl, (c) substituted phenyl, (d) substituted pyridyl, (e) substituted 2,3-dihydrobenzofuran, (f) 4- to 6-membered saturated oxygen-containing heterocyclyl, etc.

Abstract: Provided is an amino acid derivative prodrug represented by general formula (I-A) that is a prodrug form of an amino acid derivative which is a group 2 metabotropic glutamate receptor antagonist, or a pharmaceutically acceptable salt thereof. More specifically, provided is an amino acid derivative prodrug represented by general formula (I-A) that is a preventive or therapeutic drug for mood disorders (including depression and bipolar disorder), anxiety disorder, cognitive disorders, developmental disorders, Alzheimer's disease, Parkinson's disease, movement disorders associated with muscular rigidity, sleep disorders, Huntington's chorea, eating disorders, drug dependence, epilepsy, brain infarction, cerebral ischemia, cerebral insufficiency, cerebral edema, spinal cord disorders, head trauma, inflammation and immune-related diseases, and so on.

Abstract: Provided is an amino acid derivative prodrug represented by general formula (I-A) that is a prodrug form of an amino acid derivative which is a group 2 metabotropic glutamate receptor antagonist, or a pharmaceutically acceptable salt thereof. More specifically, provided is an amino acid derivative prodrug represented by general formula (I-A) that is a preventive or therapeutic drug for mood disorders (including depression and bipolar disorder), anxiety disorder, cognitive disorders, developmental disorders, Alzheimer's disease, Parkinson's disease, movement disorders associated with muscular rigidity, sleep disorders, Huntington's chorea, eating disorders, drug dependence, epilepsy, brain infarction, cerebral ischemia, cerebral insufficiency, cerebral edema, spinal cord disorders, head trauma, inflammation and immune-related diseases, and so on.

Abstract: Provided is an amino acid derivative prodrug represented by general formula (I-A) that is a prodrug form of an amino acid derivative which is a group 2 metabotropic glutamate receptor antagonist, or a pharmaceutically acceptable salt thereof. More specifically, provided is an amino acid derivative prodrug represented by general formula (I-A) that is a preventive or therapeutic drug for mood disorders (including depression and bipolar disorder), anxiety disorder, cognitive disorders, developmental disorders, Alzheimer's disease, Parkinson's disease, movement disorders associated with muscular rigidity, sleep disorders, Huntington's chorea, eating disorders, drug dependence, epilepsy, brain infarction, cerebral ischemia, cerebral insufficiency, cerebral edema, spinal cord disorders, head trauma, inflammation and immune-related diseases, and so on.

Abstract: A novel process for producing optically active 2-(2-fluorobiphenyl-4-yl)propanoic acid is disclosed. This production process is characterized in that a compound of formula [1] is reacted with magnesium and so forth to prepare an organometallic reagent, which is reacted with a compound of formula [2] in the presence of a catalytic amount of a nickel compound and a catalytic amount of an optically active compound of formula [3] to obtain a compound represented by formula [4] which is subsequently converted to a compound represented by formula [5] or a pharmaceutically acceptable salt thereof.

Abstract: Provided is an amino acid derivative prodrug represented by general formula (I-A) that is a prodrug form of an amino acid derivative which is a group 2 metabotropic glutamate receptor antagonist, or a pharmaceutically acceptable salt thereof. More specifically, provided is an amino acid derivative prodrug represented by general formula (I-A) that is a preventive or therapeutic drug for mood disorders (including depression and bipolar disorder), anxiety disorder, cognitive disorders, developmental disorders, Alzheimer's disease, Parkinson's disease, movement disorders associated with muscular rigidity, sleep disorders, Huntington's chorea, eating disorders, drug dependence, epilepsy, brain infarction, cerebral ischemia, cerebral insufficiency, cerebral edema, spinal cord disorders, head trauma, inflammation and immune-related diseases, and so on.

Abstract: A novel process for producing optically active 2-(2-fluorobiphenyl-4-yl)propanoic acid is disclosed. This production process is characterized in that a compound of formula [1] is reacted with magnesium and so forth to prepare an organometallic reagent, which is reacted with a compound of formula [2] in the presence of a catalytic amount of a nickel compound and a catalytic amount of an optically active compound of formula [3] to obtain a compound represented by formula [4] which is subsequently converted to a compound represented by formula [5] or a pharmaceutically acceptable salt thereof.

Abstract: New drugs useful in the prevention or treatment of constipation are provided, in which SGLT1 inhibiting compounds, in particular, a 4-isopropylphenyl glucitol compound represented by the following formula (I), or pharmaceutically acceptable salts thereof are contained as an active ingredient:

Abstract: The present invention provides a compound represented by the following formula [1] or a pharmaceutically acceptable salt thereof which has an excellent NHE3 inhibitory effect: A-Y??[1] wherein A represents a structure represented by the following formula [2]: wherein R11 and R12 each represent a halogen atom or others as described herein, R2 represents C1-6 alkyl or others as described herein, ring E represents triazole, tetrazole, pyrimidine, or others as described herein, R31 and R32 each represent a hydrogen atom, C1-6 alkyl, C1-6 alkoxy, or others as described herein, and W represents a single bond, the formula —NH—, the formula —O—, or the formula —CONH—, and Y represents a hydrogen atom or a structure selected from

Abstract: A useful novel compound that shows superior antibacterial activity also against erythromycin resistant bacteria, for example, resistant pneumococci, streptococci, mycoplasmas, and the like, against which sufficient antibacterial activity cannot be obtained with conventional macrolide antibiotics, or a pharmaceutically acceptable salt thereof, or a hydrate or a solvate thereof.

Abstract: The present invention provides a compound represented by the following formula [1] or a pharmaceutically acceptable salt thereof which has an excellent NHE3 inhibitory effect: [Formula 15] A-Y??[1] wherein A represents a structure represented by the following formula [2]: wherein R11 and R12 each represent a halogen atom or the like, R2 represents C1-6 alkyl or the like, ring E represents triazole, tetrazole, pyrimidine, or the like, R31 and R32 each represent a hydrogen atom, C1-6 alkyl, C1-6 alkoxy, or the like, and W represents a single bond, the formula —NH—, the formula —O—, or the formula —CONH—, and Y represents a hydrogen atom or a structure represented by the following formula [3?]:

Abstract: The present invention provides agents for treating or preventing diseases such as mood disorder, anxiety disorder, schizophrenia, Alzheimer's disease, Parkinson's disease, Huntington's chorea, eating disorder, hypertension, gastrointestinal disease, drug addiction, epilepsy, cerebral infarction, cerebral ischemia, cerebral edema, head injury, inflammation, immune-related disease, alopecia, and so forth.