The behaviour of qinghaosu (artemisinin) in the presence of heme iron(II) and (III)
作者:Richard K. Haynes、Simone C. Vonwiller
DOI:10.1016/0040-4039(95)02141-8
日期:1996.1
With hemin [chloroprotoporphyrin IX iron(III)] or hemin/cysteine in aqueous MeCN, oxygen loss from the peroxide bridge of qinghaosu takes place to give a precursor to desoxoqinghaosu, a known malaria-inactive metabolite, in low yield. Ring-opened forms of qinghaosu such as the free hydroperoxide or peroxyhemiacetal react with hemin and heme to give predominantly the diketone resulting from oxygen loss
在含水MeCN中,使用血红素[氯原卟啉IX铁(III)]或血红素/半胱氨酸,会从qinghaosu的过氧化物桥中损失氧气,从而以低收率得到desoxoqinghaosu(一种已知的对疟疾无活性的代谢物)的前体。庆豪素的开环形式(例如游离氢过氧化物或过氧半缩醛)与血红素和血红素反应,主要产生二酮,这是由于过氧化物桥上的氧损失而引起的甲酰化。