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Evaluation of the enantioselectivity of an ovomucoid and a cellulase chiral stationary phase towards a set of β-blocking agents

✍ Scribed by C. Vandenbosch; W. Lindner; D.L. Massart


Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
703 KB
Volume
270
Category
Article
ISSN
0003-2670

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✦ Synopsis


The enantioselectivity of chiral stationary phases (CSP) with ovomucoid and cellulase proteins as chiral selector, towards twenty-four E-blocking agents has been evaluated. On both phases, influences of hydrophobicity, mobile phase modifier content and mobile phase pH on retention behaviour and enantioselectivity were studied. Compounds with a value of the logarithm of the partition coefficient between n-octanol and water (log P) smaller than 2, are not likely to be enantioseparated on ovomucoid. For the cellulase CSP, a correlation was found between retention behaviour and hydrophobicity. This CSP showed very good enantioselectivity towards the group of compounds / studied and a trend in higher separation coefficients for more hydrophobic compounds was observed.


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(S)-Leucine and [(S)-1-(1-Naphthyl)ethyl
✍ Anna Iuliano; Emanuele Attolino; Piero Salvadori 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 295 KB 👁 3 views

Two selectors derived from [(S)-1-(1-naphthyl)ethyl]amine and (S)-leucine have been chemically bonded to one another and the resulting chiral auxiliary linked covalently to silica gel, to produce a new chiral stationary phase (CSP) for the HPLC resolution of enantiomers. The CSP is able to separate