Suggested Reaction 1.14.16.-

Left

3alpha-Hydroxy-5beta-androstan-17-one
+6,7-Dihydrobiopterin
+H2O

Right

3beta-Hydroxysteroid
+2-Amino-6-(1,2-dihydroxypropyl)-5,6,7,8-tetrahydoro-4(1H)- pteridinone
+O2

[BiSSCat | GREP ]