Chiral HPLC analysis of milnacipran and its FMOC-derivative on cellulose-based stationary phases

Chirality. 2008 Feb;20(2):63-8. doi: 10.1002/chir.20496.

Abstract

The HPLC enantioseparation of the last generation antidepressive drug milnacipran (+/-)-1 was investigated on different cellulose-based chiral stationary phases (CSPs). On carbamate-type columns, Chiralcel OD and OD-H (+/-)-1 could be separated with alpha value about 1.20 but the resolution was quite low because of the tailing of the peaks. Direct determination of (+/-)-1 with high selectivity and resolution was obtained on Chiralcel OJ in normal phase mode elution. Precolumn derivatization of milnacipran with Fmoc-Cl gave compound (+/-)-2 which was enantioseparated on all the investigated CSPs and allowed enhanced UV or fluorimetric detection. The Chiralpak IB, that could be considered the immobilized version of Chiralcel OD-H, was found completely ineffective in the chiral recognition of (+/-)-1 and moderately efficient in the separation of (+/-)-2.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cellulose / chemistry*
  • Chromatography, High Pressure Liquid
  • Cyclopropanes / analysis
  • Cyclopropanes / chemistry*
  • Cyclopropanes / isolation & purification*
  • Fluorenes / analysis
  • Fluorenes / chemistry*
  • Fluorenes / isolation & purification
  • Humans
  • Milnacipran
  • Optics and Photonics
  • Stereoisomerism

Substances

  • Cyclopropanes
  • Fluorenes
  • Cellulose
  • 1-(9-fluorenyl)methyl chloroformate
  • Milnacipran