Copper(I) Catalyzed Conjugate Addition of Grignard Reagents to Acrylic Acids: Homologation of Artemisinic Acid and Subsequent Conversion to 9-Substituted Artemisinin Analogs
作者:Jeffrey A Vroman、Ikhlas A Khan、Mitchell A Avery
DOI:10.1016/s0040-4039(97)01428-7
日期:1997.9
A new route to novel 9-substituted-10-deoxoartemisinin analogs (13, 14) was developed employing photoxygenation of homologated derivatives of artemisinic acid (9, 10). Conjugate addition to the acrylate moiety of artemisinic acid 2 was made possible by in situ protection as a silyl ester, Cu(I)-catalyzed 1,4-addition of RMgX, and deprotection. © 1997 Elsevier Science Ltd.
利用青蒿酸的同系衍生物(9、10)的光合作用,开发了一种新的9-取代-10-脱氧青蒿素类似物的新途径(13、14)。通过原位保护甲硅烷基酯,Cu(I)催化的RMgX的1,4-加成反应和脱保护作用,可以使青蒿酸2的丙烯酸酯部分进行共轭加成。©1997爱思唯尔科学有限公司。