Reaction of artemisinin (I) with ammonia, methylamine, dimethylamine, and a
llylamine afforded five unexpected products 2-6, in addition to the previou
sly reported compounds 7-12. The identities of the new compounds were estab
lished from their spectral data, by chemical derivatization and by comparis
on with published reports. The stereochemistries of compounds 5 and 6 were
confirmed by single-crystal X-ray analysis.