Total Synthesis of the Photoprotecting Dipyrrolobenzoquinone (+)-Terreusinone

The first synthesis of (+)-terreusinone 1, a dipyrrolobenzoquinone with a potent UV-A protecting capability, is described. Key transformations include a one-pot Larock indolization–Sonogashira coupling reaction and the hydroamination of an unsubstituted ortho-alkynylaniline catalyzed by a cationic g...

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