反应详情

The reaction was carried out similarly as described in the preparation of compound 416, using compound 458 (1.83 mmol). The crude product was purified by flash chromatography using EtOAc/petroleum ether (40-60) 1:9 and 1:6 as the eluent to afford the title compound as yellow foam.

1. customThe crude product was purified by flash chromatography