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Three cyclo­octitol derivatives, in the form of a tetra­acetate, (1S*,2R*,3S*,4S*)-2,3,4-triacetoxy­cyclo­octan-1-ylmethyl ace­tate, C17H26O8, and two regioisomeric acetonide triacetates, (3aS*,4R*,8S*,9S*,9aS*)-8,9-diacet­oxy-2,2-dimethyl­cyclo­octano­[d][1,3]dioxan-4-ymethyl acetate and (3aS,4R,7S,9R,9aS)-7,9-diacet­oxy-2,2-dimethyl­cyclo­octano[d][1,3]dioxan-4-ylmethyl acetate, both C18H28O8, have been studied. The conformation of the cyclo­octane ring in the three compounds is quite close to the boat–chair form of the parent hydro­carbon. Packing is effected through weak C—H...O and van der Waals contacts.
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