Reaction catalyzed by trihydroxypterocarpan dimethylallyltransferase (2.5.1.36)
2
+
2
=
2
+
+
2 dimethylallyl diphosphate
+
2 (6aS,11aS)-3,6a,9-trihydroxypterocarpan
=
2 diphosphate
+
(6aS,11aS)-2-dimethylallyl-3,6a,9-trihydroxypterocarpan
+
(6aS,11aS)-4-dimethylallyl-3,6a,9-trihydroxypterocarpan