反应详情

A solution of 35 (415 mg, 2.07 mmol), 1 (343 mg, 2.14 mmol), and acetic acid (629 mg, 10.48 mmol) in methanol (10 mL) was treated with sodium cyanoborohydride (140 mg, 2.23 mmol) at room temperature. The resulting mixture was stirred at room temperature (3 h). The solvent was removed in vacuo. PCTLC (SiO2, 4 mm, 10% EtOH-90% CHCl3) afforded the title compound (36).

1. customThe solvent was removed in vacuo