Fmoc-L-缬氨酸 、
Fmoc-L-苯丙氨酸 、
乙酸酐 、
、 alkaline earth salt of/the/ methylsulfuric acid 、 alkaline earth salt of/the/ methylsulfuric acid 生成 (S)-4-Acetylamino-4-[(S)-1-((S)-2-carbamoyl-1-{(Z)-(1R,3S,6S,7R)-7-[(S)-1-((S)-1-carbamoyl-2-phenyl-ethylcarbamoyl)-3-carboxy-propylcarbamoyl]-3,6-dihydroxy-1-isobutyl-oct-4-enylcarbamoyl}-ethylcarbamoyl)-2-methyl-propylcarbamoyl]-butyric acid