6-hydroxy-3,3,12-trimethylchromeno[5,6-b][1,8]naphthyridin-7-one

5-hydroxy-2,2,11-trimethylchromeno[7,6-b][1,8]naphthyridin-6-one

6-hydroxy-3,3-dimethyl-3H-pyrano<2',3':7,8>chromeno<2,3-b>pyridin-7-one

3,3-二甲基-2,5-己烷二酮

1-(2-methylbut-3-yn-2-yloxy)-3-nitrobenzene