Application of the TMSOTfAgClO4 activator system to the synthesis of novel, potent, C-10 phenoxy derivatives of dihydroartemisinin
作者:Paul M. O'Neill、Alison Miller、Stephen A. Ward、B.Kevin Park、Feodor Scheinmann、Andrew V. Stachulski
DOI:10.1016/s0040-4039(99)01891-2
日期:1999.12
promotes the efficient C-10 phenoxylation of dihydroartemisinin (3) in good chemical yield and excellent stereoselectivity. In contrast to previous reports on other phenoxyglycoside derivatives, the phenoxy derivatives (5a–11b) of dihydroartemisinin do not undergo O to C rearrangement to the corresponding C-10-aryl derivatives. All of the new derivatives had potent in vitro antimalarial activity.
Synthesis, Antimalarial Activity, Biomimetic Iron(II) Chemistry, and in Vivo Metabolism of Novel, Potent <i>C</i>-10-Phenoxy Derivatives of Dihydroartemisinin
作者:Paul M. O'Neill、Alison Miller、Laurence P. D. Bishop、Stephen Hindley、James L. Maggs、Stephen A. Ward、Stanley M. Roberts、Feodor Scheinmann、Andrew V. Stachulski、Gary H. Posner、B. Kevin Park
DOI:10.1021/jm000987f
日期:2001.1.1
stereoselectivity. All of the new phenoxy derivatives have potent in vitro antimalarial activity. On the basis of the excellent yield and stereoselectivity obtained for the p-trifluoromethyl derivative 7b, this compound and the parent phenyl-substituted derivative 5b were selected for in vivo biological evaluation against Plasmodium berghei in the mouse model and for metabolism studies in rats. Compound 7b demonstrated