1,4-dimethoxy-3-(3-methyl-but-2-enyl)-naphthalene-2-carboxylic acid methyl ester

methyl 6-methoxy-2,2-dimethyl-2H-naphtho[1,2-b]pyran-5-carboxylate

methyl 6-(methoxymethoxy)-2,2-dimethyl-2H-benzo[h]chromene-5-carboxylate

4-hydroxy-3-carbomethoxynaphtho[1,2-b]-3',3'-dimethylpyran

methyl 1,4-dioxonaphthalene-2-carboxylate