Approaches to the synthesis of 4-hydroxypiloquinone
- 1 January 1983
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- p. 2147-2152
- https://doi.org/10.1039/p19830002147
Abstract
The synthesis of 4-acetoxy-1,8-dihydroxy-2-methyl-3-(4-methylpentanoyl)phenanthrene-9,10-quinoee (30) and 1,4,8-trimethoxy-2-methyl-3-(4-methylpentanoyl)phenanthrene-9,10-quinone (33), derivatives of the mould metabolite 4-hydroxypiloquinone [1,4,8-trihydroxy-2-methyl-3-(4-methylpentanoyl)-phenanthrene-9,10-quinone](2) are described. Photocyclization of methyl 2,2′,5,6′-tetramethoxy-3-methylstilbene-4-carboxylate (21) provided methyl 1,4,8-trimethoxy-2-methylphenanthrene-3-carboxylate (22), suitable for further elaboration into the natural derivatives.Keywords
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