2-(2,3-dimethoxyphenyl)-4,4-dimethyl-5H-1,3-oxazole

3-hydroxy-1,5-dimethoxyxanthen-9-one

2-(2,3-dimethoxyphenyl)-1,3-benzothiazole

(2-hydroxy-3-methoxyphenyl)-(2,4,6-trimethoxyphenyl)methanone

6-bromo-2,3-dimethoxybenzoyl chloride