Suggested Reaction 1.14.11.-

Left

1-Benzopyrylium, 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-, chloride
+O2
+2-Ketoglutaric acid

Right

3,3',4,5,7-Pentahydroxyflavone
+CO2
+Butanedionic acid
+H+

[BiSSCat | GREP ]