Journal of the American Chemical Society p. 7932 - 7938 (1989)
Update date:2022-08-03
Topics:
Gould, Steven J.
Shen, Ben
Whittle, Yvonne G.
The six steps from 3-hydroxyanthranilic acid to the epoxyquinol LL-C10037α, 1, produced by Streptomyces LL-C10037 have been determined by whole-cell feedings with deuterated substrates and by cell-free studies. 3-Hydroxyanthranilic acid, 2, is decarboxylated to 2-hydroxyaniline, 11, and then oxidized to 2,5-dihydroxyaniline, 8.Acetylation at nitrogen and oxidation afford acetamido-1,4-benzoquinone, 4.A crude cell-free preparation has been found to epoxidize 4 to the epoxyquinone 16 in the presence of O2 and either NaDH or NADPH.Reduction of 16 yields 1.Therelationship of this pathway to that of fungi that produce patulin via analogous intermediates from 6-methylsalicylic acid is discussed.
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