3(R)-ethyl-5(S)-[5-benzyloxy-1(S)-tert-butoxy-carbonylamino-3,3-dimethyl-pentyl]-2-oxo-tetrahydrofuran 、 5(S)-tert-butoxycarbonylamino-4(S)-hydroxy-2(R),7,7-trimethyl-8-[3(R,S)-allyloxymethyl-1,2,3,4-tetrahydroquinolin-1-ylcarbonyl]-octanoic acid (N-butyl)amide 、 3-[N-tert-butoxycarbonyl-4(S)-(4-benzyloxy-2,2-dimethylbutyl)-2,2-dimethyl-1,3-oxazolidin-5(S)-yl]-2(R)-ethyl-propionic acid (N-butyl)amide 、 、 5(S)-tert-butoxycarbonylamino-4(S)-hydroxy-2(R),7,7-trimethyl-8-[3(R,S)-cyclopropylcarbonylamino-1,2,3,4-tetrahydroquinolin-1-ylcarbonyl]-octanoic acid (N-butyl)amide 生成
3-[N-tert-butoxycarbonyl-4(S)-(3-carboxy-2,2-dimethyl-propyl)-2,2-dimethyl-1,3-oxazolidin-5(S)-yl]-2(R)-ethyl-propionic acid (N-butyl)amide