Suggested Reaction 2.1.1.-

Left

2-Hydroxy-6-oxo-octa-2,4-dienoate
+S-Adenosyl-L-methionine

Right

2-Hydroxy-6-oxo-7-methylocta-2,4-dienoate
+S-Adenosyl-L-homocysteine

[BiSSCat | GREP ]