Novel cinchona alkaloid O9-hydrazide derivatives as chiral anion-exchange-type selectors: Synthesis and chromatographic evaluation

Quinine and quinidine derivatives as chiral selectors I. Brush type chiral stationary phases for high-performance liquid chromatography based on cinchonan carbamates and their application as chiral anion exchangers

Michael Lämmerhofer, Wolfgang Lindner · Journal of Chromatography A · 1996 · 336 citations

Pharmacy, Chemistry, Analytical Chemistry +15

Enantioselective anion exchangers based on cinchona alkaloid-derived carbamates: Influence of C8/C9 stereochemistry on chiral recognition

Norbert M. Maier, Lorenzo Nicoletti, Michael L�mmerhofer et al. · Chirality · 1999 · 164 citations

Pharmacy, Chemistry, Molecular Recognition +14

High-efficiency chiral separations of N-derivatized amino acids by packed-capillary electrochromatography with a quinine-based chiral anion-exchange type stationary phase

Michael Lämmerhofer, Wolfgang Lindner · Journal of Chromatography A · 1998 · 105 citations

Pharmacy, Chemical Engineering, Chemistry +13

High-performance liquid chromatographic enantioseparation of N-protected ?-amino acids using nonporous silica modified by a quinine carbamate as chiral stationary phase

Véronique Piette, Michael L�mmerhofer, Klaus Bischoff et al. · Chirality · 1997 · 54 citations

Pharmacy, Pharmaceutical Analysis, Analytical Chemistry +16

Chiral anion exchange-type stationary phases based on cinchonan alkaloids. An effective tool for the separation of the enantiomers of chiral acids

Michael Lämmerhofer, Norbert M. Maier, Wolfgang Lindner · American laboratory · 1998 · 49 citations

Pharmacy, Chemistry, Medicinal Chemistry +15