Formation of 5-Hydroxy-3-methoxy-1,4-naphthoquinone and 8-Hydroxy-4-methoxy-1,2-naphthoquinone from Juglone

<table>The structures of the 5-hydroxy-1,4-naphthoquinones (juglones) and 8-hydroxy-1,2-naphthoquinones discussed in this work. Nb. For ease of comparison, the atomic numbering of the juglone series is maintained for <b>7</b> and <b>9</b> in discussion in the text even though it is unconventional.</table>

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Figure 1

Figure 1: Formation of 5-Hydroxy-3-methoxy-1,4-naphthoquinone and 8-Hydroxy-4-methoxy-1,2-naphthoquinone from Juglone 