3-Eth-(E)-ylidene-1-(4-methoxy-benzyl)-pyrrolidine-2,5-dione

1-(4-Methoxy-benzyl)-3-methyl-pyrrole-2,5-dione

3-ethylidene-1-(4-methoxy-benzyl)-pyrrolidine-2,5-dione

3-Chloro-4-ethyl-5-methoxy-5H-furan-2-one

3-Chloro-4-ethyl-5-methoxy-1-(4-methoxy-benzyl)-1,5-dihydro-pyrrol-2-one