The total synthesis of leukotrienes has been achieved starting from butadiene by a palladium-catalyzed telomerization at room temperature. A Sharpless catalytic asymmetric epoxidation generated the asymmetric centers with >94% ee. Simple transformations of the key intermediate 15 produced the leukotrienes LTA4 methyl ester (4), LTC4 (1), LTD4 (2) and LTE4 (3), as well as (14S,15S)-LTA4 methyl ester (24)
12(S)-hydroxyeicosatetraenoic acid methyl ester 1 was synthesized. 1 was converted to phosphite 17 which upon treatment with hydrogen peroxide afforded the corresponding hydroperoxide 18 (12-HPETE methyl ester) with partially retained configuration.
Total synthesis of 11-R,12-R-dihydroxyeicosatrienoic acid, a metabolite of the cytochrome P-450 epoxygenase pathway
作者:Steven S. Wang、Joshua Rokach
DOI:10.1016/s0040-4039(00)73401-0
日期:1994.8
The first total and enantioselective synthesis of 11-R,12-R-dihydroxy-5,8,14-eicosatrienoic acid is reported. We have used the carbohydrate 2-deoxy-D-glucose as a masked 1,6-dialdehyde precursor to perform the synthesis. The availability of this material will allow, among other things, the testing of the hypothesis that it can be a biochemical precursor to 12-R-HETE in vivo.
Total synthesis of proinflammatory dihydro-12-KETE metabolites
作者:Steven S. Wang、Xiao-Xin Shi、William S. Powell、Tamara Tieman、Steven J. Feinmark、Joshua Rokach
DOI:10.1016/0040-4039(94)02298-p
日期:1995.1
The first totalsynthesis of the 10,11-dihydro-12-etoicosaetranoic acid (10,11-dihydro-12-KETE) , a proinflammatory metabolite of 12-KETE is reported. In addition, the totalsynthesis of two other potential metabolites of 12-KETE, namely 8,11-dihydro-12-KETE and 8,9-dihydro-12-KETE , is also described. These three synthetic compounds are aimed at investigating a new biosynthetic reductive pathway for