反应详情

In 5 ml of dichloromethane were suspended 48 mg of (4S)-4-phenylacetamido-3-isoxazolidinone and 95 mg of the Compound (70) obtained in Example 70. To the suspension was added 71 mg of 1-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline. The mixture was stirred for 5.5 hours at room temperature. The solvent was evaporated off, and the residue was subjected to a silica gel column chromatography, followed by elution with ethyl acetate to give 75 mg of the subject Compound (71) as a colorless oily product.

1. customThe solvent was evaporated off
2. washfollowed by elution with ethyl acetate