In particular, the resulting active ester with pentafluorophenol facilitated the subsequent reaction with an amine and the hydrazine derivative to yield the C-terminal amide and hydrazide, respectively.

• 特别是与五氟苯酚生成的酯对后续的与氨或肼衍生化分别生成C端酰胺或酰肼非常有利。