Total synthesis of a novel long chain alkyl phenol, phaffiaol (1), a potent antioxidant isolated from Phaffia rhodozyma, was achieved via three reaction steps starting from 3, 5- dibromosalicylaldehyde (2). We also prepared several types of long chain alkyl phenol having different aromatic rings or different carbon length, and evaluated their antioxidative activity using the rabbit erythrocyte membrane ghost system. Amongst these compounds, ...