Reaction catalyzed by 2,3',4,6-tetrahydroxybenzophenone synthase (2.3.1.151)
2
+
=
3
CoA
+
+
2
2 malonyl-CoA
+
4-coumaroyl-CoA
=
3 CoA
+
4-hydroxy-6-[(E)-2-(4-hydroxyphenyl)ethenyl]-2H-pyran-2-one
+
2 CO2
