Reaction catalyzed by cephaline 6'-O-methyltransferase (2.1.1.B84)
+
=
+
S-adenosyl-L-methionine
+
1alpha-(S)-N-deacetylisoipecoside
=
S-adenosyl-L-homocysteine
+
6-O-methyl-N-deacetylisoipecoside