Enantioselective Synthesis of 7(<i>S</i>)-Hydroxydocosahexaenoic Acid, a Possible Endogenous Ligand for PPARα
作者:Minhao Zhang、Ashik A. Sayyad、Anmol Dhesi、Arturo Orellana
DOI:10.1021/acs.joc.0c01770
日期:2020.11.6
We report the first total synthesis of the polyunsaturated fatty acid 7-hydroxydocosahexaenoic acid (7-HDHA) in racemic form and the enantioselectivesynthesis of 7-(S)-HDHA. Both syntheses follow a convergent approach that unites the C1–C9 and C10–C22 fragments using Sonogashira coupling and Boland reduction as key steps. These syntheses enabled the unambiguous characterization of this natural product
Synthesis and use of 7-substituted norbornadienes for the preparation of prostaglandins and prostanoids
作者:Anthony D. Baxter、Falmai Binns、Tariq Javed、Stanley M. Roberts、Peter Sadler、Feodor Scheinmann、Basil J. Wakefield、Marcus Lynch、Roger F. Newton
DOI:10.1039/p19860000889
日期:——
Syntheses of 7-substituted norbornadienes from 7-t-butoxy- and 7-halogeno-norbornadienes are described. Rearrangement of the products in the presence of peracetic acid gives bicyclic aldehydes (2) in equilibrium with enol ethers (3) which are hydrolysed to hydroxycyclopentenylacetaldehydes (4), and converted into key intermediates for the synthesis of prostaglandins and their analogues. Syntheses of