Total syntheses of two ergoiine-types of alkaloids, (±)-isofumigaclavine B (14)(for the first time) and methyl (±)-Iysergate (21) and methyl (±)-isolysergate (22), via a route involving reductive photocyclisation of the enamide (2) followed by glycol formation and oxidative cleavage of the dihydrofuran ring, are described.
I. Ninomyia, C. Hashimoto, T. Kiguchi and T. Naito, J. Chem. Soc., Perkin Trans. 1, 1985, 941 DOI: 10.1039/P19850000941
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