Enantioselective Fluorescent Sensors for Chiral Carboxylates Based on Calix[4]arenes Bearing anL-Tryptophan Unit
作者:Guang-yan Qing、Yong-bing He、Feng Wang、Hai-juan Qin、Chen-guang Hu、Xi Yang
DOI:10.1002/ejoc.200600917
日期:2007.4
Two-armed chiral calix[4]arenes (3a–c) functionalized at the lower ring with L-tryptophan units have been prepared and the structures of these receptors characterized by IR, MS, 1H, and 13C NMR spectroscopy and elemental analysis. The enantioselective recognition of these receptors has been studied by fluorescence titration and 1H NMR spectroscopy. The receptors exhibited different chiral recognition
已经制备了在下环用 L-色氨酸单元功能化的双臂手性杯 [4] 芳烃 (3a-c),并通过 IR、MS、1H 和 13C NMR 光谱和元素分析表征了这些受体的结构。已经通过荧光滴定和 1 H NMR 光谱研究了这些受体的对映选择性识别。受体对手性材料的一些对映异构体表现出不同的手性识别能力,并在主客体之间形成1:1的复合物。受体 3a 对 N-Boc 保护的丙氨酸阴离子表现出出色的对映选择性荧光识别能力,而 3b 对扁桃酸的对映异构体表现出良好的对映选择性识别能力。(© Wiley-VCH Verlag GmbH & Co. KGaA,69451 Weinheim,德国,2007)