HRID904951

反应详情

EQUATION

反应方程式

HRID 904951 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

25.7 g of H-Val-Thr(But)-OBut.HCl are reacted, in 250 ml of dimethylformamide, with 26.0 g of Z-Glu-(OBzl)-OH and 15 g of DCC in the presence of 9.5 g of HOBt. After stirring for 6 hours the mixture is filtered and the filtrate is evaporated to dryness in vacuo. The residue is taken up in ethyl acetate, the solution is washed as described under (A) and, after drying and evaporating off the solvent, 37.3 g of the title compound are obtained with a melting point of 140°-144° (decomposition). Elementary analysis correct (C, H and N).

WORKUP

后处理

  1. filtrationis filtered
  2. customthe filtrate is evaporated to dryness in vacuo
  3. washthe solution is washed
  4. customafter drying
  5. customevaporating off the solvent, 37.3 g of the title compound
  6. customare obtained with a melting point of 140°-144° (decomposition)