Add time:08/20/2019         Source:sciencedirect.com

The enantiomeric resolution of (±)-cizolirtine, (±)-cizolirtine-N-oxide, (±)-N-desmethylcizolirtine and (±)-5(α-hydroxybenzyl)-1-methylpyrazole was achieved on amylose tris (3,5-dimethylphenyl carbamate) chiral stationary phase known as Chiralpak AD using hexane/2-propanol/triethylamine (80:20:0.05, v/v/v) as the mobile phase. The flow rate of the mobile phase used was 1.0 ml/min with UV detection at 230 nm. The values of Rs of the resolved enantiomers of (±)-cizolirtine, (±)-cizolirtine-N-oxide, (±)-N-desmethylcizolirtine and (±)-5(α-hydroxybenzyl)-1-methyl pyrazole were 1.20, 0.60, 1.16 and 1.15, respectively.

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