diethyl (E)-2-(3-(4-methyl-N-(4-nitrobenzoyl)phenylsulfonimidoyl)allyl)malonate

diethyl (E)-2-((3-((tert-butyldimethylsilyl)oxy)-4-oxo-4H-pyran-2-yl)methyl)-2-(3-(4-methylphenylsulfonimidoyl)allyl)malonate

diethyl (E)-2-(3-(N-acetyl-4-methylphenylsulfonimidoyl)allyl)-2-((3-((tert-butyldimethylsilyl)oxy)-4-oxo-4H-pyran-2-yl)methyl)malonate

diethyl (E)-2-((3-((tert-butyldimethylsilyl)oxy)-4-oxo-4H-pyran-2-yl)methyl)-2-(3-(4-methyl-N-(methylsulfonyl)phenylsulfonimidoyl)allyl)malonate

diethyl (R,E)-2-(3-(N-benzoyl-4-methylphenylsulfonimidoyl)allyl)-2-((3-((tert-butyldimethylsilyl)oxy)-4-oxo-4H-pyran-2-yl)methyl)malonate