1-环己烯-1,2-二甲酸二甲酯

2-羟基-3-甲基-1,4-萘醌

6-ethyl-9-methyl-7β,8α-bis(methoxycarbonyl)-6,7,8,9-tetrahydro-6α,9α-epoxybenzocyclooctene-5,10-dione

6-ethyl-9-methyl-7α,8β-bis(methoxycarbonyl)-6,7,8,9-tetrahydro-6α,9α-epoxybenzocyclooctene-5,10-dione