Fig. 4. Data analyses for the 1H NMR titration of (±)-2 with d-GlcNAc 8 (see Fig. 3) assuming a 1 : 1 binding model. The signal due to proton s6d was followed for both diastereomeric complexes. (a) Analysis of peaks marked by blue diamonds in Fig. 3 spectra; K a = 1280 M–1 ± 2%, limiting Δδ = 0.117 ppm. (b) Analysis of peaks marked by red circles in Fig. 3 spectra, K a = 81 M–1 ± 5%, limiting Δδ = 0.331 ppm.
