Suggested Reaction 1.21.3.-

Left

5,6-Dehydrolupanine
+O2

Right

1,5-Methano-8H-pyrido(1,2-a)(1,4)diazocin-8-one, 3-(3-butenyl)-1,2,3,4,5,6-hexahydro-, (1R)-
+H2O2

[BiSSCat | GREP ]