12-Bis(369-trimethyl-312-ep­oxy-3455a6788a9101212a-dodeca­hydro­pyrano43-j12benzodioxepin-4-yl)­oxyethane

摘要

The title compound, C32H50O10, prepared from a mixture of α- and β-dihydro­artemisinin, has two β-arteether moieties linked via an –OCH2CH2O– bridge, so that the mol­ecule is symmetric about the bridge. Each asymmetric unit contains a β-arteether moiety and an –OCH2 group, which is only one-half of the mol­ecule. The endo-peroxide bridges of the parent compounds have been retained in each half of the diol-bridged dimer. The rings exhibit chair and twist-boat conformations.