2-bromo-7-chloro-3-hydroxymethyl-5,8-dimethoxy-1-naphthol

3-acetoxymethyl-2-bromo-7-chloro-5,8-dimethoxy-1-naphthol

7-chloro-2-iodo-5,8-dimethoxy-1-methoxymethoxy-3-[(4-methylpent-2-ynoyloxy)methyl]naphthalene