3,3′-Dihydroxyisorenieratene, a Natural Carotenoid with Superior Antioxidant and Photoprotective Properties (pages 400–403)
Hans-Dieter Martin, Sebastian Kock, Roger Scherrers, Kaya Lutter, Tanja Wagener, Claas Hundsdörfer, Susanne Frixel, Klaus Schaper, Hansgeorg Ernst, Wolfgang Schrader, Helmut Görner and Wilhelm Stahl
Version of Record online: 25 NOV 2008 | DOI: 10.1002/anie.200803668
The color of red smear cheeses arises from naturally occurring carotenoids like 3,3′-dihydroxyisorenieratene (1). This compound and its oxidation product 2, which have unusual phenolic and quinoid end groups, respectively, were synthesized. The antioxidant and photoprotective properties of a series of carotenoids were tested with eight different model systems, and 1 proved to be superior to other carotenoids.