A series of tetracyclic and tricyclic trioxane dimers has been prepare
d with ether and ester tethers of varying length and flexibility. Seve
ral of these trioxane dimers have been found to have potent and potent
ially therapeutically valuable antimalarial, antiproliferative, and an
titumor activities in vitro. (C) 1997 Elsevier Science Ltd.