Asymmetric Organocatalysis in Drug Development—Highlights of Recent Patent Literature

Enantioselective organocatalytic reactions published in the recent patent literature are highlighted in this review and include inter- and intramolecular phase-transfer conjugate additions catalyzed by quaternized cinchona alkaloids, a Diels–Alder reaction catalyzed by oxazaborolidine complexes, asymmetric Betti reactions, the Lonza synthesis of l-carnitine, and several Corey–Bakshi–Shibata reductions.