Abstract
OF several proposals1–4 concerning the biogenesis of the alkaloid colchicine (5; R 1 = R 2 = Me), only that of Wenkert4 involves the intervention of an intact tropolone ring prior to formation of ring B.
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SCOTT, A. Biosynthesis of Colchicine. Nature 186, 556 (1960). https://doi.org/10.1038/186556a0
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DOI: https://doi.org/10.1038/186556a0
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