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Laccase‐catalysed oxidation of ergot alkaloids in the absence of chemical mediators allowed the unexpected isolation of the mono‐hydroxylated derivatives of compounds 2–7. Structure determination by NMR techniques clearly indicated that hydroxylation took place at the C‐4 benzylic position. Quite notably, the proposed protocol allowed, for the first time, functionalisation at the C‐4 position of the...
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