Synthesis and structures of new chiral diamide-ester macrocycles
作者:Ming Zhang Gao、Joseph H. Reibenspies、Ralph A. Zingaro、Bo Wang、Zun Le Xu
DOI:10.1002/jhet.5570410609
日期:2004.11
A series of new hetero-macrocyclic diamide-ester compounds (4a — 4z, 6a — 6b) were synthesized using 4-(dimethylamino)pyridine as catalyst and characterization by infrared spectra, nuclear magnetic resonance spectra, mass spectra and elemental analyses. The structures of 4e and meso 4b were determined by X-ray crystallography. The association constants of the compounds with various metal ions were