Suggested Reaction 1.14.16.-

Left

3,5,7,3',4',5'-Hexahydroxyflavone
+6,7-Dihydrobiopterin
+H2O

Right

1-Benzopyrylium, 3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-, chloride
+2-Amino-6-(1,2-dihydroxypropyl)-5,6,7,8-tetrahydoro-4(1H)- pteridinone
+O2

[BiSSCat | GREP ]