(2-methoxyphenoxy)methyl vinyl ketone

1-<(benzyloxy)carbonyl>-2-(hydroxymethyl)-4-oxo-3-piperidinecarboxylic acid γ-lactone

3-hydroxy-4-(2-methoxyphenoxy)but-1-ene

methyl 1,4,5,6-tetrahydro-1-<(benzyloxy)carbonyl>-2-methyl-4-oxo-3-pyridinecarboxylate