Suggested Reaction 1.17.4.-

Left

1-Benzopyrylium, 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-, chloride
+H2O
+Oxidized dithiothreitol

Right

3,3',4,5,7-Pentahydroxyflavone
+1,4-Dithiothreitol

[BiSSCat | GREP ]