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氏名 石﨑 幸
氏名(カナ) イシザキ ミユキ
氏名(英語) Ishizaki Miyuki
所属 薬学部 医療薬学科
職名 教授
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FICA, a new chiral derivatizing agent for determining the absolute configuration of secondary alcohols by 19F and 1H NMR spectroscopies. 

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Optically active 1-fluoroindan-1-carboxylic acid (FICA) was designed and prepared as its methyl ester for determining the absolute configuration of chiral molecules by both 1H and 19F NMR spectroscopies. Enantiomerically pure isomers of FICA methyl esters (FICA Me esters) were obtained by chromatographic
separation using HPLC with a Daicel Chiralcel OJ-H column. The absolute configuration of the (+)-FICA Me ester was deduced to be (S) by X-ray crystallographic analysis of the (+)-FICA amide of (R)-a-phenethylamine. Both enantiomers were derived to the diastereomeric esters of chiral secondary alcohols by an
ester exchange reaction. In the 1H NMR spectra, the signs of DdH (dR dS) were consistent on each side of the FICA molecular plane. Therefore, the concept of the modified Mosher’s method could be successfully applied to the FICA-based procedure. Moreover, the consistency in the signs of DdF (dR dS) values
suggests that the FICA method would be reliable in assigning the absolute configurations of secondary alcohols based on 19F NMR spectroscopy.
pp.1001-1009

発表雑誌等の名称

Tetrahedron: Asymmetry

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2013/09

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