Synthese von Polymethintetrathiafulvalenen durch Dimerisierung vonω-(1,3-Dithiol-2-yliden)polyenalen mit demLawesson-Reagens: Carotinoide und supracarotinoide Tetrathiafulvalene
Synthesis of Polymethinetetrathiafulvalenes by Dimerization of ω-(1,3-Dithiol-2-ylidene)polyenals with the Lawesson Reagent: Carotenoid and Supracarotenoid Tetrathiafulvalenes
Oxidation of furans with dimethyldioxirane. Interception of malealdehyde and related aldehydes via Wittig reactions
作者:Brian J. Adger、Collette Barrett、Joseph Brennan、Peter McGuigan、M. Anthony McKervey、Brian Tarbit
DOI:10.1039/c39930001220
日期:——
Unsaturated aldehydes including malealdehyde, generated in acetone by oxidation of furans with dimethyldioxirane, can be trapped efficiently by phosphoranes in Wittig reactions.
Synthesis of the Antifungal Macrolide Antibiotic (+)-Roxaticin
作者:David A. Evans、Brian T. Connell
DOI:10.1021/ja027638q
日期:2003.9.1
The total synthesis of the antifungal macrolide antibiotic roxaticin has been accomplished. The synthesis relies principally on aldol and directed reduction steps to construct the extended 1,3-polyol array present in the natural product. Three principal nonpolyene containing fragments were assembled and then coupled usingJuliaolefination and methyl ketone aldol addition reactions. A series of functionalization
已完成抗真菌大环内酯类抗生素roxaticin的全合成。合成主要依赖于羟醛和定向还原步骤来构建存在于天然产物中的扩展 1,3-多元醇阵列。组装了三个主要的含非多烯的片段,然后使用 Julia 烯化和甲基酮醛醇加成反应偶联。一系列功能化反应结合了敏感的多烯,并提供了受保护的罗沙辛二环酸,该酸以良好的收率内酯化。酸性脱保护完成了 roxaticin 的这种会聚合成。
Synthesis and evaluation of new polyenic compounds as potential PPARs modulators
In order to identify new leads for the treatment of type 2 diabetes, polyenic molecules A and B derived from nipecotic acid and dienol derivatives C have been prepared and their effect on PPARs transcriptional activity evaluated and compared to that of rosiglitazone, WY14,643 and GW501516. Among the synthesized compounds, dienol 39 is the most active, increasing WY14,643 PPARα response and demonstrating partial agonist properties on rosiglitazone PPARγ.
为了找到治疗 2 型糖尿病的新线索,我们制备了由尼泊金酸衍生的多烯分子 A 和 B 以及二烯醇衍生物 C,评估了它们对 PPARs 转录活性的影响,并与罗格列酮、WY14,643 和 GW501516 进行了比较。在合成的化合物中,二烯醇 39 的活性最高,它能提高 WY14,643 PPARα 的反应,并显示出对罗格列酮PPARγ 的部分激动特性。
Extrem aufgeweitete Tetrathiafulvalene mit Polyen-Spacern. Carotinoide Tetrathiafulvalene. Polymethin-tetracyanotetrathiafulvalen-Radikalkationen, eine neue Klasse von Violenen
作者:Gottfried Märkl、Andreas Pöll、Norbert G. Aschenbrenner、Corinna Schmaus、Theodor Troll、Peter Kreitmeier、Heinrich Nöth、Martin Schmidt
DOI:10.1002/hlca.19960790522
日期:1996.8.7
Extremely Expanded Tetrathiafulvalenes with Polyene Spacers. Carotinoid Tetrathiafulvalenes. Polymethin-Tetracyanotetrathiafulvalene Radical Cations, a New Class of Violenes