6,6-dimethyl-3-phenyl-5,7-dihydrocyclopenta[e][1,3]oxazine-2,4-dione

3-phenylspiro[5,7-dihydrocyclopenta[e][1,3]oxazine-6,1'-cyclohexane]-2,4-dione

3-methyl-2-(phenylcarbamoyl)but-2-enoic acid

ethyl 4-(phenylcarbamoyloxy)benzenecarbodithioate

(2-methyl-1,3-thiazol-5-yl)methyl N-phenylcarbamate,hydrochloride