A Novel Route to Chiraltrans-6-Alkyl-2-hydroxymethyl-1,2,5,6-tetrahydropyridines by Allylation of Chiral Imines and Ring-Closing Metathesis− Total Synthesis of (−)-3-epi-Deoxoprosopinine
作者:François-Xavier Felpin、Kamal Boubekeur、Jacques Lebreton
DOI:10.1002/ejoc.200300423
日期:2003.12
A novel route to enantiomerically pure trans-6-alkyl-2-hydroxymethyl-1,2,5,6-tetrahydropyridines is reported in five steps from Garner’s aldehyde with overall yields higher than 35 %. This strategy is based on the allylation of chiral imino alcohols formed in situ followed by a ring-closing metathesis. This new method was used for the first total synthesis of (−)-3-epi-deoxoprosopinine. (© Wiley-VCH
报道了一种从 Garner 醛中分五个步骤制备对映体纯反式-6-烷基-2-羟甲基-1,2,5,6-四氢吡啶的新途径,总产率高于 35%。该策略基于原位形成的手性亚氨基醇的烯丙基化,然后是闭环复分解。这种新方法用于 (-)-3-epi-deoxoprosopinine 的首次全合成。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)