allylic alcohols of ω‐alkenoic acids and derivatives thereof are highly important building blocks for the synthesis of biologically active compounds. The direct enantioselective CH oxidation of linear terminal olefins offers the shortest route toward these compounds, but known synthetic methods are limited and suffer from low selectivities. Described herein is an enzymatic approach using the P450
Alcohol Dehydrogenase‐Catalyzed Synthesis of Enantiomerically Pure
<i>δ</i>
‐Lactones as Versatile Intermediates for Natural Product Synthesis
作者:Thomas Fischer、Jörg Pietruszka
DOI:10.1002/adsc.201200258
日期:2012.9.17
enantiomer of the vinyllactone with excellent enantiomeric excess (>99%). The scope of possible applications of enantiopure vinyllactones has been verified by subjection to cross‐metathesis resulting in the total synthesis of the insectpheromone (S)‐5‐hexadecanolide and the cytotoxic styryllactone goniothalamine as well as derivatives thereof.
Pd-Catalyzed kinetic resolution of cyclic enol ethers. An enantioselective route to functionalised pyrans
作者:Jean-Olivier Zirimwabagabo、Joseph P. A. Harrity
DOI:10.1039/c4cc00109e
日期:——
Functionalised cyclic enol ethers can be recovered with high levels of enantiocontrol after an asymmetric catalytic [1,3]-rearrangement reaction.
通过不对称催化[1,3]-重排反应,可以高度控制环状烯醚的手性,并使其得到回收。
Total Synthesis of 8,12-<i>iso</i>-iPF<sub>3</sub><sub>α</sub>-VI, an EPA-Derived Isoprostane: Stereoselective Introduction of the Fifth Asymmetric Center
作者:Sheila H. Jacobo、Chih-Tsung Chang、Gue-Jae Lee、John A. Lawson、William S. Powell、Domenico Pratico、Garret A. FitzGerald、Joshua Rokach
DOI:10.1021/jo051916x
日期:2006.2.1
A new and stereoselective approach for the synthesis of all-syn isoprostanes is reported. This method, which is based on acid-catalyzed Diels-Alder reaction, allows the introduction of the side chain with a predetermined stereochemistry of the hydroxy group. The first total synthesis of an eicosapentaenoic acid (EPA)-derived iP, 8,12-iso-iPF(3 alpha)-VI 10, was performed using this approach.
Synthesis and cytotoxic activities of goniothalamins and derivatives
Antiproliferative activity was measured on three human cancer cell lines (A549, MCF-7, HBL-100), to show which of the structural elements of goniothalamins is mandatory for cytotoxicity. We found that the configuration of the stereogenic centre of the δ-lactone plays an important role for cytotoxicity. In our studies only (R)-configured goniothalamins showed antiproliferative activity, whereby (R)-configuration