The position of the biphenyl linkage in the ergot pigments. A partial synthesis of ergoflavin

Journal of the Chemical Society D: Chemical Communications Pub Date: DOI: 10.1039/C29710000111

Abstract

The ergot pigments, ergochrysin A, the secalonic acids A, B, C, and D, and ergoxanthin have 2,2′-linkages between the biphenyl residues.

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