1,2-Bis[(3,6,9-trimethyl-3,12-ep­oxy-3,4,5,5a,6,7,8,8a,9,10,12,12a-dodeca­hydro­pyrano[4,3-j][1,2]benzodioxepin-4-yl)­oxy]ethane

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.

4-Methyl-N-(9-methyl-9-aza­bicyclo­[3.3.1]non-3-yl)benzamide

The asymmetric unit of the title compound, C₁₇H₂₄N₂O, contains three independent mol­ecules. In the crystal, mol­ecules are linked by weak N—H...O hydrogen bonds into chains parallel to the c axis.