I cis-t trans-15-17 2-4 2, 12, 15, A= OCH,; B= C= H 3, 13, 16, B= OCH,; A= C= H 4, 14, 17, C= OCH,; A= B= H erally resulting in detoxified products, is the formation of phenols by nonenzymatic rearrangement of arene oxides." These phenolic derivatives are often the major metabolites of PAH and can be used as an index of overall metabolism of and exposure to PAH. In this report, we describe the syntheses of the angular ring methoxy-5- ...