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Beilstein J. Org. Chem. 2010, 6, No. 5, doi:10.3762/bjoc.6.5
Graphical Abstract
Figure 1: Schematic representation of the design of a host–guest complex based on antiparallel β-sheet geomet...
Figure 2: Molecular structures of the two designed receptors 1 and 2 having different relative orientations o...
Figure 3: CAChe minimized structures for the “endo” complexes formed between receptors 1 (a) and 2 (b) and th...
Scheme 1: Synthesis of tetraprotected bis(alanyl)benzophenones 3 from L-phenylalanine 7.
Scheme 2: Deprotection reactions of bis(alanyl)benzophenone units 3.
Scheme 3: Synthesis of the linear tetrapeptides 15 and 17 as mixtures of diastereoisomers.
Figure 4: a) Molecular structures of the two major diastereoisomers of the cyclic receptors obtained from the...
Figure 5: Reverse-phase HPLC chromatograms of the purified fraction obtained from macrocyclization reactions ...
Figure 6: Variable-temperature 1H NMR experiments of 1 in chloroform-d solution. The proton signals that appe...
Figure 7: Small fraction of the columnar arrangement observed in solid-state packing of receptor 1. Two adjac...
Figure 8: Molecular structures of the guests used in the binding experiments.
Figure 9: Selected region of the variable-concentration 1H NMR spectra acquired using chloroform-d solutions ...
Figure 10: a) Selected region of a series 1H NMR spectra acquired during titration of receptor 2 with n-C6H13-...
Figure 11: CAChe minimized structures for two possible binding geometries, a) exo and b) endo complexes formed...