反应详情

The reactions and treatments of Example 1 were repeated using (2S,3S)-3-ethoxycarbonyloxirane-2-carboxylic acid (1.01 g, 6.31 mmol.), N-hydroxysuccimide (726 mg, 6.31 mmol.), N,N'-dicyclohexylcarbodiimide (1.30 g, 6.31 mmol.), and α-benzylphenethylamine (1.43 g, 6.31 mmol.). Thus prepared product was purified by silica gel column chromatography (chloroform/methanol=50/1) to give the desired compound as a pale yellow oil (2.22 g, yield: quantitatively).

1. customThus prepared product was purified by silica gel column chromatography (chloroform/methanol=50/1)