?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Karen+Amanda&rft.aulast=Johnson&rft.au=Johnson%2C+Karen+Amanda&rft.degree=Doctoral&rft.date=1996&rft.inst=UCL+(University+College+London)&rft.tpages=296&rft.title=Synthesis+of+1%2C2%2C4-trioxanes+with+antimalarial+activity