Discovery of a Highly Potent Anti-inflammatory Epoxyisoprostane-Derived Lactone
作者:Julian Egger、Peter Bretscher、Stefan Freigang、Manfred Kopf、Erick M. Carreira
DOI:10.1021/ja509892u
日期:2014.12.17
Epoxyisoprostanes EI (1) and EC (2) are effective inhibitors of the secretion of proinflammatory cytokinesIL-6 and IL-12. In detailed studies toward the investigation of the molecular mode of action of these structures, a highly potent lactone (3) derived from 1 was identified. The known isoprostanoids 1 and 2 are most likely precursors of 3, the product of facile intramolecular reaction between the
Mercury-Free Preparation and Selective Reactions of Propargyl (and Propargylic) Grignard Reagents
作者:Hukum P. Acharya、Kei Miyoshi、Yuichi Kobayashi
DOI:10.1021/ol071397f
日期:2007.8.1
ZnBr2 was found to catalyze formation of propargyl and propargylic Grignardreagents, and thus put an end to the standard method using a mercury catalyst. The Grignardreagents were submitted to addition reaction with carbonyl compounds and allylation with the cyclic monoacetate to afford the propargyl-type products selectively. Furthermore, the product from the monoacetate was transformed to an acetylene
The stereospecificsyntheses of the four isomers of 6-formyl-5,6-epoxy hexanoic acid methyl ester 8, 15, 23 and 30 from Z-deoxy-D-ribose have allowed the preparation of methyl esters of LTA4, 1, and its three unnatural isomers.
Stereoselective synthesis of epoxyisoprostanes: an organocatalytic and “pot-economy” approach
作者:Jiang Weng、Sheng Wang、Lin-Jie Huang、Zhang-Yi Luo、Gui Lu
DOI:10.1039/c5cc01077b
日期:——
An efficient and direct synthetic route to the epoxyisoprostane EC methyl ester has been accomplished in 8 steps (10% overall yield) from readily available starting materials by using a series...
Syntheses of 7Z,9E,11Z,14E-Leukotrienes, Biologically Highly Active SRS Compounds
作者:Bernd Spur、Heiner Jendralla、Attilio Crea、Wilfried Peters、Wolfgang König
DOI:10.1002/ardp.19853180616
日期:——
A partir de l'hydroxymethyl-3 oxirannebutyrate de methyle, synthese de l'ester de methyle du leucotriene A4; ce compose reagit ensuite avec le glutathion, la cysteinylglycine et la cysteine pour former les leucotrienes C4, -D4 et -E4 correspondants
A partir de l'hydroxymethyl-3 oxirannebutyrate demethyle,合成 de l'ester demethyle du leucotriene A4;ce compose reactit ensuite avec le glutathion, la cysteinylglycine et la halfeine pour before les leucotrienes C4, -D4 et -E4 对应物