1-methyl-3-(3,4-dimethoxyphenyl)pyrrolidine-2-thione

3-(3,4-dimethoxyphenyl)-3-(3-oxobutyl)dihydrofuran-2(3H)-one

1-(2-hydroxyethyl)-3',4'-dimethoxy-6-(methylamino)-2,3-dihydro-[1,1'-biphenyl]-4(1H)-one

1-chlorobut-3-en-2-one