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New chiral stationary phases based on xanthone derivatives for liquid chromatography
Author(s) -
Fernandes Carla,
Tiritan Maria Elizabeth,
Cravo Sara,
Phyo Ye’ Zaw,
Kijjoa Anake,
Silva Artur M.S.,
Cass Quezia B.,
Pinto Madalena M.M.
Publication year - 2017
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/chir.22706
Subject(s) - chemistry , enantiomer , elution , chromatography , enantioselective synthesis , high performance liquid chromatography , chiral derivatizing agent , covalent bond , chiral column chromatography , organic chemistry , catalysis
Six chiral derivatives of xanthones (CDXs) were covalently bonded to silica, yielding the corresponding xanthonic chiral stationary phases (XCSPs). The new XCSPs were packed into stainless‐steel columns with 150 x 4.6 mm i.d. Moreover, the greening of the chromatographic analysis by reducing the internal diameter (150 x 2.1 mm i.d.) of the liquid chromatography (LC) columns was also investigated. The enantioselective capability of these phases was evaluated by LC using different chemical classes of chiral compounds, including several types of drugs. A library of CDXs was evaluated in order to explore the principle of reciprocity as well as the chiral self‐recognition phenomenon. The separation of enantiomeric mixtures of CDXs was investigated under multimodal elution conditions. The XCSPs provided high specificity for the enantiomeric mixtures of CDXs evaluated mainly under normal‐phase elution conditions. Furthermore, two XCSPs were prepared with both enantiomers of the same xanthonic selector in order to confirm the inversion order elution.