5,7-dimethyl-3-phenyl-[1,2]oxazolo[3,4-d]pyrimidine-4,6-dione

苄胺

3-Furan-2-yl-5,7-dimethyl-7H-isoxazolo[3,4-d]pyrimidine-4,6-dione

对甲氧基苯胺

5,7-Dimethyl-3-thiophen-2-yl-7H-isoxazolo[3,4-d]pyrimidine-4,6-dione