Journal
EXPERT OPINION ON INVESTIGATIONAL DRUGS
Volume 14, Issue 9, Pages 1117-1128Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1517/13543784.14.9.1117
Keywords
arteflene; artemisinin; artemisinin combination chemotherapy; chemotherapy; drug resistance; malaria; OZ-277; semi-synthetic
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Artemisinin derivatives such as artesunate, dihydroartemisinin and artemether are playing an increasing role in the treatment of drug-resistant malaria. They are the most potent antimalarials available, rapidly killing all asexual stages of the parasite Plasmodium falciparum. This review highlights the recent developments in the area of improved second-generation semisynthetic artemisinin derivatives and fully synthetic antimalarial endoperoxide drugs. In pursuit of synthetic analogues of the artemisinins, one of the major challenges for chemists in this area has been the non-trivial development of techniques for the introduction of the peroxide bridge into candidate drugs. Although chemical research has enabled chemists to incorporate the endoperoxide 'warhead' into synthetic analogues of artemisinin, significant drawbacks with many candidates have included comparatively poor antimalarial activity, non-stereoselective syntheses and chemical approaches that are not readily amenable to scale up. However, very recent progress with synthetic 1,2,4-trioxolanes provides a new benchmark for future medicinal chemistry efforts in this area.
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