已经研究了三种合成Stephacidins,对乙酰氨基甲酰胺和降冰酰胺的1,7-二氢吡喃并[2,3- g ]吲哚环系统的方法。第一个涉及串联的氮烯插入/芳族克莱森重排。第二种是由可商购的6-苄氧基吲哚得到的更常规的方法。第三种方法是对仿生的狄尔斯-阿尔德方法进行仿生的狄斯卡德-阿德耳方法的合成合成,其中所述方法是对步冬青素,天冬酰胺和降冰片酰胺的仿生。
Synthesis of Notoamide J: A Potentially Pivotal Intermediate in the Biosynthesis of Several Prenylated Indole Alkaloids
作者:Jennifer M. Finefield、Robert M. Williams
DOI:10.1021/jo100332c
日期:2010.5.7
An efficient totalsynthesis of notoamide J, a new prenylated indole alkaloid and potentialbiosyntheticprecursor, is described herein. Starting from l-proline and a substituted tryptophan derivative, this synthesis also employs an oxidation and pinacol rearrangement for the formation of the oxindole in the final step.
Improved Biomimetic Total Synthesis of <scp>d</scp>,<scp>l</scp><i>-</i>Stephacidin A
作者:Thomas J. Greshock、Robert M. Williams
DOI:10.1021/ol701845t
日期:2007.10.1
The direct conversion of beta-hydroxyproline derivatives into 5-hydroxypyrazin-2(1H)-ones under Mitsunobu conditions has been discovered to be a general biomimetic protocol generating IMDA intermediates and has been applied to the concise, biomimetic total syntheses of D,L-stephacidin A and D,L-brevianamide B.