反应详情

Obtained from Intermediate 83 (4.3 g, 15.8 mmol) by the procedure described in Intermediate 13. Purification by column chromatography with silica gel eluting with ethyl acetate/n-hexane (1:5) gave the title compound (1.82 g, 43%) as oil.

1. customPurification by column chromatography with silica gel eluting with ethyl acetate/n-hexane (1:5)