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- W2135450123 abstract "Summary Two new structural variants of Marfey's reagent (1-fluoro-2,4-dinitrophenyl-5-l-alaninamide, FDNP-l-Ala-NH2) were synthesized by nucleophilic substitution of one fluorine atom in 1,5-difluoro-2,4-dinitrobenzene (DFDNB) by l-methioninamide or d-phenylglycinamide. The new variants FDNP-l-Met-NH2 and FDNP-d-Phg-NH2 were characterized and used for derivatization of twenty-six α-amino acids. The resulting diastereomeric derivatives were separated on a reversed-phase C18 HPLC column using a linear gradient of acetonitrile and aqueous trifluoroacetic acid (TFA) and the results were compared with those obtained by use of Marfey's reagent. To determine and establish the efficiency of both the new variants, separation results were compared for diastereomers of five representative amino acids (Ala, Phe, Ser, Asp, and Asn) prepared with MR, FDNP-l-Phe-NH2, FDNP-l-Val-NH2, FDNP-l-Leu-NH2, and FDNP-l-Pro-NH2, experiments being performed under identical conditions. Both the new chiral reagents enabled better sep..." @default.
- W2135450123 created "2016-06-24" @default.
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- W2135450123 date "2008-09-01" @default.
- W2135450123 modified "2023-09-26" @default.
- W2135450123 title "Synthesis and application of new chiral variants of Marfey's reagent for liquid chromatographic separation of the enantiomers of<i>α</i>-amino acids" @default.
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- W2135450123 doi "https://doi.org/10.1556/achrom.20.2008.3.3" @default.
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