T. Maoka et al., A NOVEL PURPLE CAROTENOID, RHODOBACTERIOXANTHIN, FROM RHODOBACTER-CAPSULATUS, Chemical and Pharmaceutical Bulletin, 45(7), 1997, pp. 1225-1227
The structure of a novel purple carotenoid, rhodobacterioxanthin (1),
isolated from Rhodobacter capsulatus was determined to be hydro-1,2,1'
,2'-tetrahydro-phi,phi,-caroten-20-al. Compound 1 showed a strong anti
oxidant effect on lipid peroxidation induced by a free radical and a s
inglet oxygen.