Chemo-Enzymatic Synthesis of Fmoc-Peptide Fragments
摘要:
Optically pure Fmoc-peptide fragments have been prepared via dicyclohexylcarbodiimide coupling of N-protected amino acids with amino acid esters, followed by enzyme-catalyzed ester hydrolysis by alcalase with a high concentration of organic solvent in a high yield.
Phase-transfer reagents as C-terminal protecting groups; facile incorporation of free amino acids or peptides into peptide sequences
作者:Shui-Tein Chen、Kung-Tsung Wang
DOI:10.1039/c39900001045
日期:——
Phase-transfer reagents (basic, neutral, and acidic) can effect temporary protection of carboxy groups by salt formation in C-terminal free amino acids or peptides during peptide synthesis; the use of acidic or neutral phase-transfer reagents as the C-terminal protecting group will not affect the nucleophilicity of the amino group of the salts thus prepared in an organic solvent.
Synthesis of [4,5-dehydroLeu2]- and [3,4-dehydropro6]-locust adipokinetic hormone
作者:Paul M. Hardy、Paul W. Sheppard
DOI:10.1039/p19830000723
日期:——
The syntheses of [4,5-dehydroLeu2]- and [3,4-dehydroPro6]-locustadipokinetichormone (LAKH) by the coupling of N-terminal hexapeptides prepared by the solid-phase method with a common C-terminal tetrapeptide synthesised in solution is described. At a dose level of 20 pmol, the former is at least as biologically active as LAKH, but the latter has only ca. 20% of the activity. Difficulties encountered
Solid-Phase Synthesis of 1,3-Azole-Based Peptides and Peptidomimetics
作者:Eric Biron、Jayanta Chatterjee、Horst Kessler
DOI:10.1021/ol0607645
日期:2006.5.1
[graphics]We report highly efficient two-step procedures for the synthesis of 1,3-oxazole-, thiazole-, and imidazole- containing peptides on solid phase from dipeptides composed of C-terminal threonine, serine, cysteine, or diaminopropionic acid by using different cyclodehydration procedures followed or preceded by oxidation. The methods are compatible with Fmoc solid-phase peptide synthesis conditions and with N-Fmoc, N-Boc, N-Cbz, and N-Alloc protecting groups.
CHEN, SHUI-TEIN;WANG, KUNG-TSUNG, J. CHEM. SOC. CHEM. COMMUN.,(1990) N5, C. 1045-1047