Divergent approach to the synthesis of (-)-balanol heterocycle and cis-3-hydroxypipecolic acid based on chiral 2-aminoalkanol equivalent
作者:Subhash P. Chavan、Dinesh B. Kalbhor、Rajesh G. Gonnade
DOI:10.1016/j.tet.2020.131773
日期:2021.1
Enantioselective synthesis of the hexahydroazepine core of (−)-balanol and formal synthesis of cis-3-hydroxypipecolic acid from a common intermediate have been accomplished by a divergent path. The common intermediate was accessed from a favorably protected enantiomerically pure 2-amino-1,3,4-butanetriol (ABT) equivalent via oxidation and Wittig olefination. The synthesis of (−)-balanol heterocycle