Suggested Reaction 1.4.3.-

Left

dTDP-3-amino-2,3,6-trideoxy-D-threo-hexopyranos-4-ulose
+H2O
+O2

Right

dTDP 1-ester with (6R)-5,6-dihydro-4-hydroxy-6-methyl-5-oxo-2H-pyran
+Ammonia
+H2O2

[BiSSCat | GREP ]