A new synthetic route to 10β-alkyldeoxoartemisinins
作者:Jingyuan Ma、Esther Katz、Herman Ziffer
DOI:10.1016/s0040-4039(99)01824-9
日期:1999.12
Artemisinin was reduced with DIBAL and acetylated to yield 10 alpha-acetoxyartemisinin. The latter compound was treated with titanium tetrachloride and a series of trimethylsiloxyl enol ethers to produce a series of 10 beta-alkyldeoxoartemisinins. (C) 1999 Elsevier Science Ltd. All rights reserved.
Syntheses and Antimalarial Activities of 10-Substituted Deoxoartemisinins
作者:Jingyuan Ma、Esther Katz、Dennis E. Kyle、Herman Ziffer
DOI:10.1021/jm000195l
日期:2000.11.1
Two series of 10-substituted deoxoartemisinin derivatives have been synthesized. The first employed the reaction of dihydroartemisinin acetate with several silyl enol ethers in the presence of titanium tetrachloride. The second utilized the reaction of 10-(2-oxoethyl)deoxoartemisinin with several Grignard reagents. The in vitro antimalarial activities of both series were determined against two drug-resistant