(2R)-2-methylsulfonyloxy-3-[3-(1-phenylmethoxycarbonylpiperidin-4-yl)propoxy]propanoic acid 、 tert-butyl 2-[(3S)-3-amino-4-oxo-2,3-dihydro-1,5-benzothiazepin-5-yl]acetate 生成
tert-butyl 3(S)-[2-{3-(1-benzyloxycarbonyl-4-piperidyl)propoxy}-1(S)-ethoxycarbonylethyl]amino-2-oxo-2,3,4,5-tetrahydro-1H-1-benzazepine-1-acetate