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Penmetsa KV, Reddick CD, Fink SW, Kleintop BL, DiDonato GC, Volk KJ, Klohr SE. DEVELOPMENT OF REVERSED-PHASE CHIRAL HPLC METHODS USING MASS SPECTROMETRY COMPATIBLE MOBILE PHASES. J LIQ CHROMATOGR R T 2007. [DOI: 10.1081/jlc-100101492] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Kumar V. Penmetsa
- a Bristol-Myers Squibb Pharmaceutical Research Institute , Analytical Research and Development, New Brunswick, NJ, 08903, U.S.A
| | - Christopher D. Reddick
- a Bristol-Myers Squibb Pharmaceutical Research Institute , Analytical Research and Development, New Brunswick, NJ, 08903, U.S.A
| | - Saul W. Fink
- a Bristol-Myers Squibb Pharmaceutical Research Institute , Analytical Research and Development, New Brunswick, NJ, 08903, U.S.A
| | - Brent L. Kleintop
- a Bristol-Myers Squibb Pharmaceutical Research Institute , Analytical Research and Development, New Brunswick, NJ, 08903, U.S.A
| | - Gerald C. DiDonato
- a Bristol-Myers Squibb Pharmaceutical Research Institute , Analytical Research and Development, New Brunswick, NJ, 08903, U.S.A
| | - Kevin J. Volk
- a Bristol-Myers Squibb Pharmaceutical Research Institute , Analytical Research and Development, New Brunswick, NJ, 08903, U.S.A
| | - Steven E. Klohr
- a Bristol-Myers Squibb Pharmaceutical Research Institute , Analytical Research and Development, New Brunswick, NJ, 08903, U.S.A
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Tsai S, Cheng C. Column Switching Technique, Assisted On‐Line Matrix Elimination, and Chiral Analysis of R‐ and S‐1‐Phenyl‐1‐butanol in Biphasic Saccharomyces cerevisiae Mediated Culture. J LIQ CHROMATOGR R T 2007. [DOI: 10.1081/jlc-120025521] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Shiang‐Rong Tsai
- a Department of Chemistry , Chung Yuan Christian University , Chungli, Taiwan, 320, R.O.C
| | - Cheanyeh Cheng
- a Department of Chemistry , Chung Yuan Christian University , Chungli, Taiwan, 320, R.O.C
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Tian Q, Lv C, Wang P, Ren L, Qiu J, Li L, Zhou Z. Enantiomeric separation of chiral pesticides by high performance liquid chromatography on cellulose tris-3,5-dimethyl carbamate stationary phase under reversed phase conditions. J Sep Sci 2007; 30:310-21. [PMID: 17396588 DOI: 10.1002/jssc.200600255] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Twenty chiral pesticides were tested, of which seven samples were directly separated by HPLC using cellulose tris-3,5-dimethyl carbamate (CDMPC) chiral stationary phase under RP conditions. The influence of mobile phase composition and column temperatures from 0 degrees C to 40 degrees C on the separations were investigated. The mobile phases were methanol/water or ACN/water at a flow rate of 0.8 mL/min with UV detection at 230 or 210 nm. Epoxiconazole, terallethrin, benalaxyl, and diclofopmethyl were observed to obtain the baseline separation under suitable conditions and other pesticides pyriproxyfen, lactofen, and quizalofop-ethyl were separated partially. The retention factors (k) and selectivity factor (alpha) for the enantiomers of most investigated pesticides decreased upon increasing the temperature except for the selectivity factors (alpha) of pyriproxyfen in methanol/water. The ln alpha - 1/T plots for racemic chiral pesticides were linear at the range of 0-40 except for that of pyriproxyfen enantiomers in methanol/water and the chiral separations were controlled by enthalpy. Better separations were not always at low temperature. The elution orders of the eluting enantiomers were determined by a circular dichroism (CD) detector.
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Affiliation(s)
- Qin Tian
- Department of Applied Chemistry, China Agricultural University, Beijing, Peoples Republic of China
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Yang G, Parrilla Vazquez P, Garrido Frenich A, Martinez Vidal JL, Aboul‐Enein HY. Enantioseparation of Organophosphonate Derivatives on Amylose Tris(3,5‐Dimethylphenylcarbamate) Chiral Stationary Phase by HPLC. J LIQ CHROMATOGR R T 2006. [DOI: 10.1081/jlc-120025424] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Guo‐Sheng Yang
- a Department of Chemistry , Shandong University , Jinan, P. R. China
- b Department of Analytical Chemistry , University of Almeria , La Canada de San Urbano, Almeria, Spain
| | - Piedad Parrilla Vazquez
- b Department of Analytical Chemistry , University of Almeria , La Canada de San Urbano, Almeria, Spain
| | - Antonia Garrido Frenich
- b Department of Analytical Chemistry , University of Almeria , La Canada de San Urbano, Almeria, Spain
| | - Jose L. Martinez Vidal
- b Department of Analytical Chemistry , University of Almeria , La Canada de San Urbano, Almeria, Spain
| | - Hassan Y. Aboul‐Enein
- c Pharmaceutical Analysis Laboratory, Biological and Medical Research Department (MBC‐03‐65) , King Faisal Specialist Hospital and Research Centre , P.O. Box 3354, Riyadh, 11211, Saudi Arabia
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Yang GS, Parrilla Vazquez P, Garrido Frenich A, Martinez Vidal JL, Aboul-Enein HY. Chiral separation of organic phosphonate compounds on cellulose CSP (chiral stationary phase) under reversed phase mode. ANAL SCI 2003; 19:1157-61. [PMID: 12945669 DOI: 10.2116/analsci.19.1157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The enantiomers of fourteen O,O-dialkyl-2-benzyloxycarbonyl-aminoarylmethyl-phosphonates are directly separated on the tris(3,5-dimethylphenylcarbamate) cellulose column (Chiralcel OD-R) under reversed phase mode. The results of the chiral separation are different from the results obtained in the normal phase mode. The mobile phase plays an essential role in chiral discrimination when using Chiralcel OD-R. The influences of the mobile phase composition on the retention and the enantioselectivity are investigated. The influences on chiral separation of the length and steric hindrance of alkoxy groups of the phosphonate ester and of the nature of the substituent on the benzene ring that is attached to the chiral carbon atom are also discussed.
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Affiliation(s)
- Guo-Sheng Yang
- Department of Chemistry, Shandong University, Jinan 250100, PR China
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Yang GS, Du W, Jin S, Zhou L, Parrilla Vázquez P, Garrido Frenich A, Martínez Vidal JL, Aboul-Enein HY. Influence of the Alcoholic Modifier on the Enantioseparation of Organophosphonate Derivatives on Cellulosetris(3,5-Dimethylphenylcarbamate) Chiral Stationary Phase Under Normal Phase Mode. ANAL LETT 2003. [DOI: 10.1081/al-120021097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Perrin C, Matthijs N, Mangelings D, Granier-Loyaux C, Maftouh M, Massart DL, Heyden YV. Screening approach for chiral separation of pharmaceuticals part II. Reversed-phase liquid chromatography. J Chromatogr A 2002; 966:119-34. [PMID: 12214686 DOI: 10.1016/s0021-9673(02)00746-x] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A screening strategy for the rapid separation of drug enantiomers by reversed-phase liquid chromatography was developed using three cellulose/amylose stationary phases. The key point to achieve enantioselectivity is the control of the compound ionisation. Only two mobile phases, i.e. an acidic phosphate buffer (pH 2.0) containing a chaotropic salt (KPF6) and a borate buffer (pH 9.0) mixed with acetonitrile, are used in the proposed strategy. This strategy was successfully applied to a set of 37 diverse chiral pharmaceuticals. Satisfactory enantioselectivity was achieved for 89% of them.
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Affiliation(s)
- C Perrin
- Department of Pharmaceutical and Biomedical Analysis, Pharmaceutical Institute, Vrije Universiteit Brussel, Belgium
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Yang GS, Zhou L, Wei D, Li GL, vazquez PP, Frenich AG. Effect of the structure of organic phosphonate compounds on chiral separations on derivatized cellulose chiral stationary phase. Chromatographia 2002. [DOI: 10.1007/bf02493202] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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MOOKDASANIT J, TAMURA H. Comparative Enantioseparation of Monoterpenes by HPLC on Three Kinds of Chiral Stationary Phases with an On-Line Optical Rotatory Dispersion under Reverse Phase Mode. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2002. [DOI: 10.3136/fstr.8.367] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Tachibana K, Ohnishi A. Reversed-phase liquid chromatographic separation of enantiomers on polysaccharide type chiral stationary phases. J Chromatogr A 2001; 906:127-54. [PMID: 11215884 DOI: 10.1016/s0021-9673(00)00955-9] [Citation(s) in RCA: 239] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The direct chiral separation by chiral stationary phases (CSPs) is one of the most important techniques to analyze enantiomeric purity as well as to get enantiomerically pure material quickly. Among various types of CSPs, polysaccharide type CSPs are well known by their versatility and durability. They are not only effective under normal-phase conditions, but also under reversed-phase conditions. In order to get a good separation under the reversed-phase conditions, it is the key to choose an appropriate mobile phase. For example, a simple mixture of water/acetonitrile or water/methanol are sufficient for a neutral analyte, while it is necessary to use an acidic solution instead of water for an acidic analyte and a solution of a chaotropic salt (or a basic solution) for a basic analyte, respectively. The paper also presents lists of more than 350 separation examples that include 22 validated methods for drug analyses from serum, plasma, or urine samples on polysaccharide type CSPs under reversed-phase conditions.
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Affiliation(s)
- K Tachibana
- Daicel Chemical Industries Ltd., Tsukuba Research Center, Ibaraki, Japan.
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