Table 1.

Affinities of ligands 1–9 as measured by fluorescence polarization.

Ligand	R	K d [μm]5
1		88±3
2		92±5
3		22±0.7
4		31±1.3
5		8.8±0.3
6		15±0.3
7		23±1.0
8		5.2±0.3
9 [a]		4.5±0.2

[a] The affinity of compound 9 is not directly comparable with the others due to its glucose moiety.