Transition-Metal-Catalyzed Synthesis of Aspergillide B: An Alkyne Addition Strategy
作者:Barry M. Trost、Mark J. Bartlett
DOI:10.1021/ol300200m
日期:2012.3.2
catalytic enantioselective formal total synthesis of aspergillide B is reported. This linchpin synthesis was enabled by the development of new conditions for Zn-ProPhenol catalyzed asymmetric alkyneaddition. This reaction was used in conjunction with ruthenium-catalyzed trans-hydrosilylation to affect the rapid construction of a late-stage synthetic intermediate of aspergillide B to complete a formal
报道了曲霉内酯 B 的催化对映选择性形式全合成。这一关键合成是通过开发 Zn-ProPhenol 催化不对称炔加成的新条件而实现的。该反应与钌催化的氢化硅烷化反应结合,影响曲霉内酯B后期合成中间体的快速构建,高效完成曲霉内酯B的正式合成。
Routine Use of Natural Abundance Deuterium NMR in a Polypeptidic Chiral Oriented Solvent for the Determination of the Enantiomeric Composition of Chiral Building Blocks
[reaction: see text] Naturalabundancedeuterium 2D NMR spectroscopy in chiral liquid crystal was successfully used to efficiently analyze the enantiomeric composition of organic chiral building blocks involved in the syntheses of natural and synthetic bioactive products. The results reported here emphasize the high potential of this analytical strategy and prove its applicability for routinely determining
Highly Enantioselective Propargylic Hydroxylations Catalyzed by Chloroperoxidase
作者:Shanghui Hu、Lowell P. Hager
DOI:10.1021/ja983612g
日期:1999.2.1
Highly enantioselective synthesis of propargyl alcohols
作者:R.C. Hartley、S. Lamothe、T.H. Chan
DOI:10.1016/s0040-4039(00)60315-5
日期:1993.2
Silylpropargyl carbanions bearing a chiral auxiliary on silicon have been alkylated with excellent regio and diastereoselectivity. The effect of the solvent has been investigated and propargyl alcohols have been synthesised in high enantiomeric excess.
<i>De Novo</i> Asymmetric Synthesis of Phoracantholide J
作者:Kenneth F. Avocetien、Jiazhen J. Li、Xiaofan Liu、Yanping Wang、Yalan Xing、George A. O’Doherty
DOI:10.1021/acs.orglett.6b02432
日期:2016.10.7
A denovo asymmetric total synthesis of the macrolide natural product (S)-phoracantholide J has been achieved in 10 steps from the commodity chemicals (1-pentyne, ethyl acrylate, acetaldehyde, and hydrogen). The asymmetry of the route was introduced by a Noyori reduction of a 3-yn-2-one, which makes the route equally amenable to the synthesis of either enantiomer. In addition, this route relies upon