Suggested Reaction 1.14.16.-

Left

(9Z)-(13S)-12,13-Epoxyoctadeca-9,11-dienoate
+6,7-Dihydrobiopterin
+H2O

Right

(9Z,11E,13E)-9,11,13-Octadecatrienoic acid
+2-Amino-6-(1,2-dihydroxypropyl)-5,6,7,8-tetrahydoro-4(1H)- pteridinone
+O2

[BiSSCat | GREP ]