Fig. 3: Construction of diaxial compound 15ag.

The reaction was carried out with 7ag (0.05 mmol), 8a (0.125 mmol), and 16c (0.002 mmol) in CHCl3 (0.5 mL) at −50 °C under N2.
The reaction was carried out with 7ag (0.05 mmol), 8a (0.125 mmol), and 16c (0.002 mmol) in CHCl3 (0.5 mL) at −50 °C under N2.