2(R)-benzyl-9-benzyloxy-5(S)-tert-butoxycarbonyl-amino-4(S)-hydroxy-7,7-dimethyl-nonanoic acid (N-methyl)amide 、 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-butoxy-carbonyl-4(S)-(4-benzyloxy-2,2-dimethylbutyl)-2,2-dimethyl-1,3-oxazolidin-5(S)-yl]-2(R)-[(2-methyl)propen-3-yl]-propionic acid (N-butyl)amide 、 、 5(S)-tert-butoxycarbonylamino-4(S)-hydroxy-2(S)-isopropyl-7,7dimethyl-8-[2(R,S)-ethylaminocarbonyl-3,4-dihydro-2H1,4-benzothiazin-4-ylcarbonyl]-octanoic acid (N-butyl)amide 生成
3-[N-tert-butoxycarbonyl-4(S)-(3-carboxy-2,2-dimethylpropyl)-2,2-dimethyl-1,3-oxazolidin-5(S)-yl]-2(R)-benzylpropionic acid (N-methyl)amide