ethyl (+/-)-2-ethoxycarbonyl-5-hydroxy-5-(trimethylsilyl)ethynyl-1-cyclohexylideneacetate

9-acetyl-6-hydroxy-7,8,9,10-tetrahydro-5,12-naphthacenedione

1,4-二甲氧基萘

cis-1-carboxy-2-methoxycarbonyl-4-acetylcyclohexane