specialized pro-resolving lipid mediators. Resolvin E1, produced from eicosapentaenoic acid, was the first specialized pro-resolving lipid mediator reported. This oxygenated polyunsaturated fatty acid displays a plethora of interesting biological activities, and has entered initial clinical trial development programs. The Evans-Nagao aldol reaction, a stereoselective alkyne reduction and a Z-selective Wittig
studies revealed that 22-OH-PD1n-3 DPA is formed from n-3 docosapentaenoic acid in human serum, and we confirmed that 22-OH-PD1n-3 DPA is a secondary metabolite produced by ω-oxidation of PD1n-3 DPA in human neutrophils and in human monocytes. The results reported are of interest for enabling future structure–activityrelationship studies and provide useful molecular insight of the metabolism of the protectin
Model studies on the ring construction of the auriside macrolactone
作者:Rodolfo Tello-Aburto、Adrián Ochoa-Teran、Horacio F. Olivo
DOI:10.1016/j.tetlet.2006.06.041
日期:2006.8
The preparation of a 12-membered ring macrolactone model of auriside that contains a pendant diene chain bearing a bromide was investigated employing two approaches. The first approach utilized an oxidative rearrangement of a tertiary allylic alcohol on a 12-membered ring. The second approach was based on a 1,4-methylation of an ynone followed by macrolactonization.
Stereoselective synthesis of protectin D1: a potent anti-inflammatory and proresolving lipid mediator
作者:M. Aursnes、J. E. Tungen、A. Vik、J. Dalli、T. V. Hansen
DOI:10.1039/c3ob41902a
日期:——
A convergent stereoselective synthesis of the potent anti-inflammatory, proresolving and neuroprotective lipid mediator protectin D1 (2) has been achieved in 15% yield over eight steps. The key features were a stereocontrolled Evans-aldol reaction with Nagao's chiral auxiliary and a highly selective Lindlar reduction of internal alkyne 23, allowing the sensitive conjugated E,E,Z-triene to be introduced late in the preparation of 2. The UV and LC/MS–MS data of synthetic protectin D1 (2) matched those obtained from endogenously produced material.
作者:Jørn E. Tungen、Marius Aursnes、Trond Vidar Hansen
DOI:10.1016/j.tetlet.2015.02.080
日期:2015.4
Maresin 1 is a potent anti-inflammatory and pro-resolvinglipidmediator derived from docosahexaenoic acid. The totalsynthesis of maresin 1 is achieved in 10 steps and in 7% overall yield. The Evans–Nagao aldol reaction between (2E,4E)-5-bromopenta-2,4-dienal and different chiral auxiliaries is investigated. The reported synthesis is efficient and highly stereoselective, affording multi-milligram