A formaltotalsynthesis of ovalcin is described herein starting from readily available sugar ribose with selective zinc-mediated ring-opening reaction and Grubbs olefin metathesis as the key steps.
Total synthesis of (–)-ovalicin and analogues from<scp>L</scp>-quebrachitol
作者:Derek H. R. Barton、Sophie Bath、David C. Billington、Stephan D. Gero、Béatrice Quiclet-Sire、Mohammad Samadi
DOI:10.1039/p19950001551
日期:——
We describe here the first chiral totalsynthesis of (–)-ovalicin and the synthesis of several related analogues, from the naturally occurring cyclitol L-quebrachitol.
Enantioselective formal synthesis of (−)-ovalicin using quinic acid as a chiral template
作者:Achille Barco、Simonetta Benetti、Carmela De Risi、Paolo Marchetti、Gian P. Pollini、Vinicio Zanirato
DOI:10.1016/s0957-4166(98)00284-5
日期:1998.8
the synthesis of (−)-ovalicin was synthesized using (−)-quinicacid as the chiral source, through a series of stereocontrolled and efficient chemical reactions, thus establishing a new, formal synthesis of the natural target. The featuring spirocyclic epoxide function has been installed by internal Williamson ether synthesis using the functionalities originally present at C-1 of (−)-quinicacid after