Abstract
The isolation, structure determination, and reactivity of the tricyclic labile hydroperoxides 10 and 2 obtained by dye-sensitized photooxygenation of L-, D-, and DL-tryptophan and Nb-methoxycarbonyltryptophan ester are reported. The tricyclic hydroperoxide 10, under appropriate conditions, was easily convertible to formylkynurenine. Plausible mechanisms for these transformations are discussed.
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