Abstract: The invention provides an A? peptide aggregation inhibitor, an A? peptide toxicity reducing agent, and a preventive and/or therapeutic agent for Alzheimer's disease. The oxidized A? peptide in which one or more amino acid residues of A? peptide have been oxidized (excluding an oxidized A? peptide in which only Met has been oxidized).

Abstract: There is provided technology for promoting permeation of a substance into a cell layer. Provided is a cell layer permeation promoter comprising a compound represented by general formula (1). Also provided is a composition for facilitating drug absorption that contains the cell layer permeation promoter, said composition being for facilitating absorption of a drug into a living body. Also provided is a pharmaceutical composition that contains the cell layer permeation promoter and furthermore contains a drug to be absorbed into a living body.

Abstract: Provided is a compound which is bioapplicable and amyloid-selective, and is useful as an amyloid oxygenation catalyst applicable not only to A? peptides but also to other amyloids, and a preventive/therapeutic drug for an amyloid-related disease using the same.

Abstract: Provided is a compound which is bioapplicable and amyloid-selective, and is useful as an amyloid oxygenation catalyst applicable not only to A? peptides but also to other amyloids, and a preventive/therapeutic drug for an amyloid-related disease using the same.

Abstract: Provided is a compound which is bioapplicable and amyloid-selective, and is useful as an amyloid oxygenation catalyst applicable not only to A? peptides but also to other amyloids, and a preventive/therapeutic drug for an amyloid-related disease using the same.

Abstract: Provided is a compound which is bioapplicable and amyloid-selective, and is useful as an amyloid oxygenation catalyst applicable not only to A? peptides but also to other amyloids, and a preventive/therapeutic drug for an amyloid-related disease using the same.

Abstract: Provided is a compound which is useful as an in vivo applicable, amyloid-oxygenating catalyst selective for amyloid and applicable not only to an A? peptide, but also to other amyloids and a drug containing the compound for preventing and/or treating amyloid-related diseases.

Abstract: The invention provides an A? peptide aggregation inhibitor, an A? peptide toxicity reducing agent, and a preventive and/or therapeutic agent for Alzheimer's disease. The oxidized A? peptide in which one or more amino acid residues of A? peptide have been oxidized (excluding an oxidized A? peptide in which only Met has been oxidized).

Abstract: The invention provides an A? peptide aggregation inhibitor, an A? peptide toxicity reducing agent, and a preventive and/or therapeutic agent for Alzheimer's disease. The oxidized A? peptide in which one or more amino acid residues of A? peptide have been oxidized (excluding an oxidized A? peptide in which only Met has been oxidized).

Abstract: It is intended to provide: a compound useful as an amyloid oxidation catalyst which is applicable in vivo and is applicable not only to A? peptides but to other amyloids; and a prophylactic or therapeutic drug for an amyloid-related disease, comprising the same. The present invention provides a benzothiazole compound represented by the following formula (1) wherein X represents a halogen atom; R1 represents an optionally substituted hydrocarbon group; R2 represents a hydrogen atom or an optionally substituted hydrocarbon group; R3 and R4 are the same or different and each represent a hydrogen atom, an optionally substituted hydrocarbon group, an alkoxy group, a halogen atom, an amino group, a nitro group, or a cyano group; R2 and R4 optionally together form an alkylene group; and R5 represents an anion.

Abstract: Provided are a compound which is useful as an in vivo applicable, amyloid-oxygenating catalyst selective for amyloid and applicable not only to an A? peptide but also to other amyloids and a drug containing the compound for preventing and/or treating amyloid-related-diseases.

Abstract: It is intended to provide: a compound useful as an amyloid oxidation catalyst which is applicable in vivo and is applicable not only to A? peptides but to other amyloids; and a prophylactic or therapeutic drug for an amyloid-related disease, comprising the same. The present invention provides a benzothiazole compound represented by the following formula (1) wherein X represents a halogen atom; R1 represents an optionally substituted hydrocarbon group; R2 represents a hydrogen atom or an optionally substituted hydrocarbon group; R3 and R4 are the same or different and each represent a hydrogen atom, an optionally substituted hydrocarbon group, an alkoxy group, a halogen atom, an amino group, a nitro group, or a cyano group; R2 and R4 optionally together form an alkylene group; and R5 represents an anion.

Abstract: The invention provides an A? peptide aggregation inhibitor, an A? peptide toxicity reducing agent, and a preventive and/or therapeutic agent for Alzheimer's disease. The oxidized A? peptide in which one or more amino acid residues of A? peptide have been oxidized (excluding an oxidized A? peptide in which only Met has been oxidized).