苯基(1-吡咯烷基)甲酮

4-benzoyl-2-methyl-1,1-dioxothian-3-one

4-benzoyloxy(phenyl)methylene-2-methyl-2H-thiopyran-3(4H)-one

6-methyl-5-morpholin-4-yl-3,6-dihydro-2H-thiopyran 1,1-dioxide