Figure 1.

Cyclic voltammograms registered in 0.2 M tetrabutylammonium tetrafluoroborate (TBABF₄) in dichloromethane on a platinum electrode (area, 0.008 cm²) of (a) the supporting electrolyte (black), (b) 1,2:3,4-di-O-isopropylidene-α-D-galactopyranose (7) (red), (c) 6β-isopropyloxy-3α,5α-cyclocholestane (6d), (blue) (d) 6β-phenyloxy-3α,5α-cyclocholestane (6f) (green) and (e) 6β-(4-hydroxyphenyloxy)-3α,5α-cyclocholestane (6g) (brown). Concentrations of all compounds are equal to 5 mM, scan rate 1 V s⁻¹. Potentials were measured vs Ag/0.1 M AgNO₃ in acetonitrile at room temperature.