New Derivatives Of Antimalarial Drug Artemisinin

INTRODUCTION         The number people affected by malaria is falsify magnitude enormously. This increasing is due to the fable drug insubordinate variants of the parasite that ca holds malaria the Plasmodium. This exemption is a consequence of the massive use of the quinoline-related drugs over the expiry decades. In this scenario, it became important to search for new drugs, active against impertinent biochemical parasite targets. The drug cognise as artemisin or Qinghaosu (1), is a result of Chinese governing body campaign, to search for new active drugs against malaria, in Chinese medicinal plants. In the popular mechanism accepted for the action of artemisin, the drop off haem group, obtained during the haemoglobin digestion is proposed to catalyse the defining of oxyl radicals, by oxidization of the Fe(II) to Fe(III) and the reduction of the endoperoxide bond. These oxyl radicals rearrange in to C-centred radicals that are cytotoxic to the paras ite by alkylation of snappy parasite proteins. In the experiments directed in Liverpool, the first measuring rod was to try to synthesise novel artemisin derivatives and then to do a biomimetic study, with these complicateds and the press salt FeCl.

In the first experiment carried, it was tried to synthesise an ether (2) of the dihydroartemisin (3) and tetrazol chloride (4), development a method create by University of Algarve Organic chemical science group (see scheme 1) organization 1 In the next experiments, and using a variant methodology, it was tried to synthesise, with artemisin benzoate (5) a nd p-trifluoromethoxi phenol (6) as starting! material, the trifluoromethoxi phenol substituted compound (7) (see scheme 2)         Scheme 2 At last, it was d sensation a biomimetic study, reacting the obtained compound with the iron salt FeCl (scheme 3), originating two different products: the one resulting from the formation of a primary carbon centred radical (8); and from the formation of a standby C-centered radical (9). Scheme... If you want to get a full essay, tell apart it on our website: OrderCustomPaper.com

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