Concise Synthesis Of Catechin Metabolites 5-(3 ',4 '-Dihydroxyphenyl)-Gamma-Valerolactones (Dhpv) In Optically Pure Form And Their Stereochemical Effects On Skin Wrinkle-Reducing Activities

A concise and scalable synthetic route for optically pure (4S) and (4R)-5-(3',4'-dihydroxyphenyl)-gamma-valerolactones (DHPVs), catechin metabolites, has been developed via the efficient construction of a gamma-valerolactone moiety from hexenol. Noticeably, the different skin wrinkle-reducing activities of each metabolite were revealed via our unique syntheses of DHPVs in an enantiomerically pure form.