Stereoselective Synthesis of Polyhydroxylated Indolizidines Based on Pyridinium Salt Photochemistry and Ring Rearrangement Metathesis
作者:Ling Song、Eileen N. Duesler、Patrick S. Mariano
DOI:10.1021/jo040226a
日期:2004.10.1
Ruthenium-catalyzed ring rearrangement metathesis (RRM) reactions of stereochemically diverse, differentially protected 4-N-allylacetamidocyclopenten-3,5-diols, prepared by using pyridinium salt photochemistry, have been explored as part of a program to develop novel routes for the synthesis of polyhydroxylated indolizidines. The RRM reactions, which produce selectively protected 1-acetyl-2-allyl-3-hydroxy-1
已开发了利用吡啶鎓盐光化学方法制备的立体化学多样的,差异保护的4- N-烯丙基乙酰酰胺基环戊烯-3,5-二醇的钌催化的环重排复分解(RRM)反应,该程序是开发合成新路线的计划的一部分多羟基吲哚并咪唑类。发现产生选择性保护的1-乙酰基-2-烯丙基-3-羟基-1,2,3,6-四氢吡啶的RRM反应具有高产率和高区域选择性。通过在强效糖苷酶抑制剂(-)-swainsonine的简明制备中的应用,证明了在多羟基化吲哚并咪唑合成中4 - N-烯丙基乙酰胺基环戊烯-3,5-二醇的RRM反应的重要性。