研究了合成部分肽键被其他等排键取代的假肽,以获得长效肽药物,并研究肽与生物活性的构效关系。通过改进硼烷选择性还原 N 保护的二肽酯的肽键的条件,建立了一种简单方便的合成假 [CH2–NH]肽的方法。在所研究的酯残基中,叔丁酯的结果最好。在反应过程中没有发生外消旋化。[L-Pheψ[CH2-NH]L-Leu4-5]亮氨酸脑啡肽以N-苄氧羰基-L-苯丙氨酰基-L-亮氨酸叔丁酯为原料,以良好的收率合成。
Direct Esterification Of Poly (Ethylene Glycol) With Amino Acid Hydrochlorides
摘要:
Diesters of poly (ethylene glycol) with various a amino acid hydrochlorides were synthesized using dicyclohexyl carbodiimide as coupling agent. The use of hydrochloride as amino protecting group in dicyclohexyl carbodiimide mediated condensation reactions of amino acids was demonstrated for the first time.
Wieland,T.; Vogeler,K., Justus Liebigs Annalen der Chemie, 1964, vol. 680, p. 125 - 132
作者:Wieland,T.、Vogeler,K.
DOI:——
日期:——
A Simple and Convenient Method for the Synthesis of Iminomethylene Analogs of Peptides
作者:Hidekazu Oyamada、Masaaki Ueki
DOI:10.1246/bcsj.60.267
日期:1987.1
improving the conditions for the selectivereduction of the peptide bond of N-protected dipeptideesters by borane. Among the ester residues investigated, the t-butyl ester gave the best result. During reactions no racemization occurred. [L-Pheψ[CH2–NH]L-Leu4−5]leucineenkephalin was synthesized in good yield starting from N-benzyloxycarbonyl-L-phenylalanyl-L-leucine t-butyl ester.
研究了合成部分肽键被其他等排键取代的假肽,以获得长效肽药物,并研究肽与生物活性的构效关系。通过改进硼烷选择性还原 N 保护的二肽酯的肽键的条件,建立了一种简单方便的合成假 [CH2–NH]肽的方法。在所研究的酯残基中,叔丁酯的结果最好。在反应过程中没有发生外消旋化。[L-Pheψ[CH2-NH]L-Leu4-5]亮氨酸脑啡肽以N-苄氧羰基-L-苯丙氨酰基-L-亮氨酸叔丁酯为原料,以良好的收率合成。
Direct Esterification Of Poly (Ethylene Glycol) With Amino Acid Hydrochlorides
作者:B. S. Lele、M. A. Gore、M. G. Kulkarni
DOI:10.1080/00397919908086160
日期:1999.5
Diesters of poly (ethylene glycol) with various a amino acid hydrochlorides were synthesized using dicyclohexyl carbodiimide as coupling agent. The use of hydrochloride as amino protecting group in dicyclohexyl carbodiimide mediated condensation reactions of amino acids was demonstrated for the first time.