Diastereoselective Synthesis
of Functionally Diverse Substituted Pipecolic Acids
作者:Stephen Hanessian、Ludivine Riber、Julien Marin
DOI:10.1055/s-0028-1087477
日期:——
The synthesis of CIS-4-substitutedpipecolic acids, 4,5-disubstituted pipecolic acids, and their 6-oxoanalogues starting from enantiopure L-asparticacid is reported. The synthetic strategy involves as key steps,Suzuki-Miyaura and related Pd-mediated couplings, followedby a catalytic hydrogenation with excellent yields and diastereoselectivities.Enolate alkylations provide 4,5- TRANS-orientedfunctionalization