HRID1196735

反应详情

EQUATION

反应方程式

HRID 1196735 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

Thz-DVal-Leu-resin which was prepared from Fmoc-Leu-resin in the same manner described in Example 4, was unpacked from a reaction column and allowed to react with 2.5 equivalents of the symmetrical acid anhydride of Fmoc-nAsp(OtBu)(prepared previously from Fmoc-DAsp(OtBu) and DCC) and DMAP(10 mg) in DMF at room temperature for 3 h with occasional shaking. After removal of excess reagents, the resin was washed successively with DMF, tert-amyl alcohol, acetic acid, tert-amyl alcohol and DMF, and repacked in a reaction column. The further solid-phase peptide synthesis was performed by the standard protocol described in Example 4. The resulting DTrp-DAsp(OtBu)-Thz-DVal-Leu-resin was treated in the same manner described in Example 4 to give the title compound.

WORKUP

后处理

  1. customwas unpacked from a reaction column
  2. customAfter removal of excess reagents
  3. washthe resin was washed successively with DMF, tert-amyl alcohol, acetic acid, tert-amyl alcohol and DMF
  4. customrepacked in a reaction column