(2008/06/13)
1-(2,4-dimethoxy-benzyl)-4-(mesyloxymethyl)-2-azetidinone
1-(2,4-dimethoxy-benzyl)-4-(hydroxymethyl)-2-azetidinone
diethyl N-(2,4-dimethoxybenzyl)-amino-malonate
ethyl 1-(2,4-dimethoxybenzyl)-4-oxo-2-azetidine-carboxylate
diethyl N-(2,4-dimethoxy-benzyl)-N-(chloroacetyl)-amino-malonate