Concerning the Synthesis of the Tedanolide C(13)−C(23) Fragment via Anti-Aldol Reaction
作者:Joshua R. Dunetz、William R. Roush
DOI:10.1021/ol800546g
日期:2008.5.1
Synthesis of C(13)-C(23) aldehyde 4, an important intermediate in a planned total synthesis of tedanolide, is described. The stereoselectivity of the key anti-aldol reaction of aldehyde 5 and ketone 6 (en route to 4) perfectly tracks the enantiomeric purity of 5. It is demonstrated that aldehyde 24, a precursor of 5, undergoes facile epimerization during a Swern oxidation and stabilized ylide olefination sequence.