[HTML][HTML] The Structural Characterisation and DFT-Aided Interpretation of Vibrational Spectra for Cyclo(l-Cys-d-Cys) Cyclic Dipeptide in a Solid State

M Witkowski, D Trzybiński, S Pawlędzio, K Woźniak… - Molecules, 2023 - mdpi.com
Cyclic dipeptides with two intramolecular peptide bonds forming a six-membered 2, 5-
diketopiperazine ring are gaining significant attention due to their biological and chemical …

Vibrational spectra and crystal structure of the di‐amino acid peptide cyclo(L‐Met‐L‐Met): comparison of experimental data and DFT calculations

AP Mendham, BS Potter, RA Palmer… - Journal of Raman …, 2010 - Wiley Online Library
Abstract Experimental Raman and FT‐IR spectra of solid‐state non‐deuterated and N‐
deuterated samples of cyclo (l‐Met‐l‐Met) are reported and discussed. The Raman and FT …

Conformational structures and vibrational spectroscopic investigation of isolated dityrosine and tryptophan-tyrosine dipeptides: A theoretical study

ML Mayes, L Perreault - Computational and Theoretical Chemistry, 2018 - Elsevier
Aromatic peptides can form dipeptides which could then self-assemble into nanostructures.
However, there is still a lack of fundamental understanding between structures and …

VCD studies on cyclic peptides assembled from L‐α‐amino acids and a trans‐2‐aminocyclopentane‐ or trans‐2‐aminocyclohexane carboxylic acid

E Vass, U Strijowski, K Wollschläger… - Journal of Peptide …, 2010 - Wiley Online Library
The increasing interest in peptidomimetics of biological relevance prompted us to synthesize
a series of cyclic peptides comprising trans‐2‐aminocyclohexane carboxylic acid (Achc) or …

Structural and spectral analysis of anticancer active cyclo (Ala–His) dipeptide

S Celik, G Yilmaz, AE Ozel, S Akyuz - Journal of Biomolecular …, 2022 - Taylor & Francis
The theoretically possible most stable conformation of the cyclic dipeptide, which has a
significant anticancer activity, was examined by conformational analysis method and then by …

Vibrational spectroscopy and DFT calculations of di‐amino acid cyclic peptides. Part I: cyclo (Gly‐Gly), cyclo (L‐Ala‐L‐Ala) and cyclo (L‐Ala‐Gly) in the solid state and …

AP Mendham, TJ Dines, MJ Snowden… - Journal of Raman …, 2009 - Wiley Online Library
Investigations of the vibrational spectra of cyclo (Gly‐Gly), cyclo (L‐Ala‐l‐Ala) and cyclo (l‐
Ala‐Gly) are reported. Raman scattering and Fourier transform infrared (FTIR) spectra of …

Structural analyses of isolated cyclic tetrapeptides with varying amino acid residues

A Stamm, D Maué, A Schaly, S Schlicher… - Physical Chemistry …, 2017 - pubs.rsc.org
Cyclic peptides represent a large class of substances that occur in nature with important
biological and medical functions. Synthetic cyclic peptides are used as artificial receptors …

Structural and IR and Raman spectral analysis of cyclo (His-Phe) dipeptide

S Celik, AE Ozel, S Kecel, S Akyuz - Vibrational Spectroscopy, 2012 - Elsevier
A study was carried-out to measure and calculate infrared (4000–400cm− 1) and Raman
(3500–50cm− 1) spectra of cyclo (His-Phe) dipeptide, which has anticancer activity …

Matrix-isolation vibrational circular dichroism spectroscopy in structural studies of peptides: Conformational landscape of the Ac (-Ala) 1–4-OMe depsipeptide series

B Légrády, E Vass, G Tarczay - Journal of Molecular Spectroscopy, 2018 - Elsevier
Depsipeptides are naturally occurring peptide analogues containing ester functionalities
and are in the focus of numerous pharmaceutical researches and clinical studies owing to …

Vibrational spectroscopy and crystal structure analysis of two polymorphs of the di‐amino acid peptide cyclo(L‐Glu‐L‐Glu)

AP Mendham, RA Palmer, BS Potter… - Journal of Raman …, 2010 - Wiley Online Library
Abstract Cyclo (l‐Glu‐l‐Glu) has been crystallised in two different polymorphic forms. Both
polymorphs are monoclinic, but form 1 is in space group P21 and form 2 is in space group …