6-甲基-2H-1,4-苯并噁嗪-3(4H)-酮

3-benzyl-1,3-benzoxazine-2,4-dione

原儿茶酸

2-(4-methoxy-benzylidene)-5-methyl-benzofuran-3-one

2-(4-甲氧基苯基)-6-甲基-4H-色烯-4-酮