α-hydroxyamide derivatives 6ab. The introduction of chiral moieties on the lower rim position of the calix[4]arene allowed the synthesis of the chiral derivatives 7 and 8. Host–guest complexation properties towards various anions of the chiral α-hydroxyamide 8 have been examined by 1H NMR spectroscopy. This new receptor has shown promising selectivity for H2PO4- and N-tosyl-(L)-alaninate.
制备了一个新的对-叔丁基杯[4]
芳烃,其在下边缘具有α-酮酰胺或α-羟酰胺功能。的1 H和13个C NMR谱表明,该大环化合物优选采用一个锥形构象。对α-酮酰胺衍
生物4a的X射线晶体研究表明,固态时圆锥形呈扁平状。α-酮酰胺4ab的还原产生α-羟基酰胺衍
生物6ab。在杯[4]
芳烃的下边缘位置上引入手性部分使得可以合成手性衍
生物7和8。。通过1 H NMR光谱研究了手性客体对手性α-羟酰胺8的各种阴离子的络合特性。这种新的受体显示出对H2PO4-和N-
甲苯磺酰基-(L)-丙
氨酸的选择性。