Catalysed oxygenation of allylic hydroperoxides derived from qinghao (artemisinic) acid. Conversion of qinghao acid into dehydroginghaosu (artemisitene) and qinghaosu (artemisinin)
作者:Richard K. Haynes、Simone C. Vonwiller
DOI:10.1039/c39900000451
日期:——
Photo-oxygenation of ginghao acid and its dihydro analogue provides allylic hydroperoxides which are converted either indirectly via the corresponding esters, or directly into dehydroginghaosu (artemisitene) and the antimalarial ginghaosu (artemisinin), by treatment with a catalytic amount of copper(II) trifluoromethanesulphonate with or without an iron(III) co-catalyst in dichloromethane-acetonitrile
ginghao酸及其二氢类似物的光氧合提供了烯丙基氢过氧化物,其通过催化量的三氟甲磺酸铜(II)处理,可通过相应的酯间接转化,或直接转化为dehydroginghaosu(artemisitene)和抗疟疾的ginghaosu(artemisinin)。在氧气下在二氯甲烷-乙腈中添加或不添加铁(III)助催化剂。