The present invention aims to provide a pharmaceutical agent for the prophylaxis and/or treatment of Alzheimer's disease, which has a novel action mechanism and shows less side effects. A polyphenol derivative having liposolubility enhanced by the introduction of at least one kind of a liposoluble group selected from the group consisting of a chain saturated hydrocarbon group, a chain unsaturated hydrocarbon group, a cyclic saturated hydrocarbon group, a cyclic unsaturated hydrocarbon group, an aromatic hydrocarbon group, a liposoluble vitamin residue and a sterol residue has an action to potentiate neprilysin activity, and is useful as a pharmaceutical agent for the prophylaxis and/or treatment of Alzheimer's disease.
US9980937B2
申请人:——
公开号:US9980937B2
公开(公告)日:2018-05-29
Coupling Reactions of Catechins with Natural Aldehydes and Allyl Alcohols and Radical Scavenging Activities of the Triglyceride-Soluble Products
Hydrophobic catechin derivatives were produced by heating with natural aldehydes or allyl alcohols. (+)-Catechin or (−)-epigallocatechin-3-O-gallate was heated with trans-2-hexenal, citral, (+)-citronellal, geraniol, or phytol. Although each reaction generated complex mixtures of products, 11 compounds were isolated and characterized by spectroscopic methods. The unsaturated aldehydes were found to attach