and coupling of the dimethylphosphinothioic mixed anhydrides of protected amino acids can be performed in alcohol solvents. Sparingly soluble protected C-terminal segments of vasoactive intestinal peptide (VIP) up to the heptapeptide stage were synthesized by this technique and fully characterized.
受保护氨基酸的二甲基硫代膦酸混合酸酐的形成和偶联可以在醇溶剂中进行。通过该技术合成了直至七肽阶段的血管活性肠肽 (VIP) 的微溶保护 C 末端片段,并对其进行了充分表征。
Polypeptides. Part II. A “hydrazino-peptide” analogue of norophthalmic acid amide
作者:P. H. Bentley、J. S. Morley
DOI:10.1039/j39660000060
日期:——
The synthesis is described of an analogue (II) of norophthalmicacidamide (I), wherein the amide bond connecting the alanyl and glycyl residues is replaced by a hydrazide bond.
Kinetics of the alkaline hydrolysis of several n-benzyloxycarbonyldipeptide methyl and ethyl esters
作者:D.A. Hoogwater、M. Peereboom
DOI:10.1016/s0040-4020(01)87839-x
日期:1990.1
The reaction rates of the alkalinehydrolysis of synthesized -protected dipeptide methyl and ethyl esters were studied systematically. From the kinetic data the energies of activation, the pre-exponential factors and the reference values at 40°C were calculated. The rate of hydrolysis shows to be strongly dependent on the C-terminal amino acid in the sequence Gly ⪢ Ala/Met/Phe ⪢ Leu ⪢ Val/Pro. Surprisingly
系统地研究了合成保护的二肽甲酯和乙酯的碱水解反应速率。从动力学数据计算出活化能,指数前因子和40°C时的参考值。水解速率显示出强烈依赖于序列Gly⪢Ala / Met / Phe⪢Leu⪢Val / Pro的C末端氨基酸。令人惊讶地,N-末端氨基酸也发挥作用,但是顺序不同。N端苯丙氨酸尤其显示出相对加速作用。值得注意的是,与相应的甲酯/甲醇/水相比,乙醇/水中的含甘氨酸的二肽乙酯的酯水解明显更快。
A simple method for synthesis of amides and peptides through acyl chlorides
By improvement of the classical SOCl2-pyridine method for the preparation of acid chlorides, amides and opticallypurepeptides were synthesized rapidly in a simple manner from DCHA dicyclohexylammonium) salts of carboxylic acids. This modified SOCl2-pyridine method was applied to a rapid synthesis of TRH.