3-phenyl-2-(1,4-dioxaspiro[4.5]decan-2-yl)-4H-thiochromen-4-one 1,1-dioxide

2-(2,2-diethyl-1,3-dioxolan-4-yl)-3-phenyl-4H-thiochromen-4-one 1,1-dioxide

3-phenyl-2-(1,4-dioxaspiro[4.4]nonan-2-yl)-4H-thiochromen-4-one 1,1-dioxide

2-(2-butyl-1,3-dioxolan-4-yl)-3-phenyl-4H-1,1-dioxothiochromen-4-one

二乙基酮