The 68–75 subfragment has been prepared by a 4+4 fragment condensation using DCCI/HOBt. The constituent 68–71 and 72–75 fragments being prepared stepwise by the pivalic mixed anhydride method. The octapeptide prepared by this approach was shown to be identical with that synthesised by a solid phase method using a phenolic polymer as the support.
使用
DCCI /
HOBt通过4 + 4片段缩合制备了68-75亚片段。通过新戊混合酸酐法逐步制备68-71和72-75的组成片段。显示通过这种方法制备的八肽与通过使用
酚醛聚合物作为载体的固相方法合成的八肽相同。