Photocyclisation of enamides. Part 16. A new synthesis of clavines. The stereostructure of costaclavine
- 1 January 1980
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- p. 208-211
- https://doi.org/10.1039/p19800000208
Abstract
Epimeric 6,8-dimethylergolines (VI), (VII), and (IX) have been synthesised from the lactam (IVa) which was prepared by the reaction of the enamine (II) with methacryloyl chloride or methacrylamide. The stereochemistry of costaclavine (VI) has been established by comparison of the n.m.r. spectra of compounds (VI), (VII), (IX) and (X).Keywords
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