Total synthesis of (±)-acetoxyodontoschismenol using zirconium chemistry
作者:Ian R. Baldwin、Richard J. Whitby
DOI:10.1039/b309848f
日期:——
The dolabellanediterpene (+/-)-acetoxyodontoschismenol has been synthesised for the first time by a short route in which a three component coupling on zirconium is used to assemble all the carbons needed for the skeleton in onepot.
Synthesis and an attempt at electrophilic cyclization of some derivatives of 2,10-dimethylundeca-1,5,9-triene
作者:A. V. Lozanova、A. A. Surkova、A. M. Moiseenkov
DOI:10.1007/bf01150742
日期:1992.12
Terminally functionized terpenoids of the bis-norfarnesane series, stereoisomeric with respect to the centra double bond, were synthesized on the basis of 1,4-butynediol. Their electrophilic cyclization under the action of the complex Hg(OSO2CF3)2 . PhNMe2 led to a moderate yield of a mixture of monocyclic olefins.
Construction of Enantioenriched Cyclic Compounds by Asymmetric Allylic Alkylation and Ring-Closing Metathesis
作者:Francesca Giacomina、Alexandre Alexakis
DOI:10.1002/ejoc.201300971
日期:2013.10
A new approach to highly enantioenrichedcycliccompounds (up to 98 % ee) has been developed by using ω-ethylenic allylic substrates in a one-pot asymmetricallylicalkylation and ring-closingmetathesis sequence. The starting compounds are synthetic equivalents of cyclicallylic substrates. The method is exemplified with both Cu and Ir catalysts, and chiral phosphoramidite ligands.
通过在一锅不对称烯丙基烷基化和闭环复分解序列中使用 ω-烯属烯丙基底物,开发了一种高度对映体富集的环状化合物(高达 98% ee)的新方法。起始化合物是环状烯丙基底物的合成等价物。该方法以 Cu 和 Ir 催化剂以及手性亚磷酰胺配体为例。