1-methyl-2-[(4-methylphenyl)sulfonylmethylidene]pyrrolidine

2-hept-1-ynyl-1-methylpyrrolidine

1-methyl-3-(2-sulfanylbenzoyl)pyrrolidin-2-one

1-methyl-3-[2-(methylamino)benzoyl]pyrrolidin-2-one

3-(3,4-dimethoxyphenyl)-1-methylpyrrolidin-2-one