methyl 7-hydroxy-2-methoxy-8-oxo-6,8,9,10-tetrahydro-7H-7,9a-methanobenzo[a]azulene-1-carboxylate

(+/-)-(1α,4bβ,10α)-8,8-(Ethylenedioxy)-1-(methoxycarbonyl)-7-<(methoxymethyl)oxy>-1-methyl-2-oxogibb-4a(10a)-ene-10-carboxylic acid

(+/-)-(1α,2α,4bβ,10α)-Ethyl 2-(benzoyloxy)-8,8-(ethylenedioxy)-1-(methoxycarbonyl)-7-<(methoxymethyl)oxy>-1-methylgibb-4a(10a)-ene-10-carboxylate

(+/-)-(1α,4bβ,10α)-8,8-(Ethylenedioxy)-2-methoxy-1-(methoxycarbonyl)-7-<(methoxymethyl)oxy>-1-methylgibba-2,4a(10a)-diene-10-carboxylic acid

(+/-)-(10α)-Dimethyl 8,8-(ethylenedioxy)-2-methoxy-7-<(methoxymethyl)oxy>gibba-1,3,4a(10a),4b-tetraene-1,10-dicarboxylate