## Abstract The synthess of 18 co‐oligopeptides of L‐methionine and glycine is reported. A series of oligomers, Boc‐Gly‐Met~__n__~‐OMe (__n__ = 1–6), and six hexamers‐containing five methionyl and one glycyl residue were synthesized using the mixed anhydride procedure. Polarimetric studies give evi
The effect of homologous amino acid replacement on the conformation of oligopeptides. I. Synthesis of co-oligopeptides containing methionine and valine
✍ Scribed by Jeffrey M. Becker; Fred Naider
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1978
- Tongue
- English
- Weight
- 520 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0006-3525
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✦ Synopsis
The preparation of a series of co-oligopeptides Boc-Val-Met,-OMe (n = 1-6), as well as Boc-Met3-Val-Metz-OMe and Boc-Met3-Val-Met3-0Me. is described. The synthesis was carried out by a classic method employing the mixed anhydride procedure (isobutylchloroformate) for all coupling reactions. All oligopeptides after purification were homogeneous on silica thin layers and gave correct elemental analysis. They were judged to be optically pure using molar rotation studies a t the sodium D line.
📜 SIMILAR VOLUMES
## Abstract A conformational analyis of co‐ologopeptides containing methionine and valine or methionine and glycine was carried out using circular dichrosim. The oligopeptides containing valine and methionine (dimer to hexamer) are disorder in hexafluoropropane diol·0.5 H~2~O and trimethyl phospate
## Abstract The preparation of the co‐oligopeptides of the series H‐Gly‐Trp‐(Gly)~__n__~‐Trp‐Gly‐OH (__n__ = 0, 1, and 2) and of a number of other unprotected co‐oligopeptides of glycine and tryptophan is reported. The syntheses have been carried out by conventional methods, using, in general, __N_
## Abstract Conformational studies of the three homologous series, from dimer through heptamer, of monodisperse, N‐and C‐protected oligopeptides derived from the γ‐branched α‐amino acid residues L‐leucine, β‐cyclohexyl‐L‐alanine, and L‐phenylalanine are reported. By means of ir absorption and CD in
## Glu(OBzl)]~-~,-Pro-[~-Glu(OBzl)]~ (IX) . The oligomers are covalently bound to bifunctional polyethylene glycol (PEG) and monofunctional PEG-M of M , 5 X 103-2 X lo4. Analytical controls were carried out after each step of synthesis in order to ensure quantitative coupling yields. All products
## Abstract The preparation of the co‐oligopeptides of the series H‐Gly‐Phe‐(Gly)~__n__~‐Trp‐Gly‐OH (__n__ = 0, 1, 2) and of other free peptides of glycine, L‐tryptophan, and L‐phenylalanine is reported. The syntheses have been carried out by conventional methods, using __N__‐hydroxysuccinimide est