HRID971558
反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
5.4 g of H-Lys(BOC)-Phe-His-OMe (compare Example 1) and 4.5 g of Z-Asn-ONP in 20 ml of dimethylformamide are stirred for 20 hours at room temperature. The peptide derivative is precipitated by adding ethyl acetate, filtered off and washed with ether. After recrystallisation from methanol the product melts at 182°-183° C. In a thin layer chromatogram Rf100 = 0.57 (on silica gel). [α]D20 = -28° (c = 1 in dimethylformamide).
WORKUP
后处理
- customThe peptide derivative is precipitated
- additionby adding ethyl acetate
- filtrationfiltered off
- washwashed with ether
- customAfter recrystallisation from methanol the product melts at 182°-183° C