Enantioselective separation of several piperidine-2, 6-diones on a covalently bonded cellulose 3,5-dimethylphenyl carbamate/10-undecenoate chiral selector.

A series of piperidine-2, 6-dione drugs were enantiomerically resolved on a covalently bonded cellulose 3,5-dimethylphenyl carbamate/10-undecenoate chiral stationary phase (CSP), under normal- or reversed-phase conditions. A single column that can be applied in both modes may be advantageous when considering the shorter setup time required and the solubility of the compound to be analysed since many samples possess different solubilities. The covalently bonded CSP was compared to a commercially available chiral adsorbent, Chiralcel OD, which was previously used in our laboratory for the enantiomeric resolution of the above-mentioned drug series. Chiralcel OD is used in the normal-phase mode and is more fragile than the column used in this study. The user is restricted to the range of solvents available as eluents. Hence, it was of interest to look at the possible advantages of using a chemically bonded phase that can be applied in dual mode.