(+/-)-(1α,2α,4bβ,10α)-2-(Benzoyloxy)-10-(ethoxycarbonyl)-8,8-(ethylenedioxy)-7-<(methoxymethyl)oxy>-1-methylgibb-4a(10a)-ene-1-carboxylic acid

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

(+/-)-(1α,2α,4aα,4bβ,10α)-2-(Benzoyloxy)-10a-bromo-10-(ethoxycarbonyl)-8,8-(ethylenedioxy)-7-<(methoxymethyl)oxy>-1-methylgibbane-1,4a-carbolactone