ethyl 3-oxo-5-phenylthiolane-2-carboxylate

5-苯基-3H-1,2-二硫醇-3-酮

4,4-二苯基丁-3-烯-2-酮

ethyl 1-cyclohexyl-3-methyl-2,4-dioxo-7-phenyl-6,7-dihydro-5H-pyrano[2,3-d]pyrimidine-6-carboxylate

ethyl 4-oxo-7-phenyl-2-sulfanylidene-1,5,6,7-tetrahydropyrano[2,3-d]pyrimidine-6-carboxylate