13C nuclear magnetic resonance study of cyclodipeptides containing 13C enriched hydrophobic amino acids

The diastereoisomeric pairs of cyclodipeptides cis- and trans-cyclo(Ala-Ala), cyclo(Ala-Phe), cyclo(Val-Val) and cyclo(Leu-Leu) containing 85% 13C enriched amino-acid residues were synthesized and their 13C-13C coupling constants were measured. The combination of 13C-13C and 1H-1H coupling constants enabled to estimate unequivocally the side chain conformation of the valine and leucine residues.

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Nuclear magnetic resonance study of side-chain conformation of tyrosyl residue in [Met5]-enkephalin. Solvent and temperature dependence

Biochimica et Biophysica Acta (BBA) - Protein Structure ◽

10.1016/0005-2795(80)90171-3 ◽

1980 ◽

Vol 621 (2) ◽

pp. 190-203 ◽

Cited By ~ 23

Author(s):

J. Kobayashi ◽

T. Higashijima ◽

U. Nagai ◽

T. Miyazawa

Keyword(s):

Nuclear Magnetic Resonance ◽

Magnetic Resonance ◽

Temperature Dependence ◽

Nuclear Magnetic Resonance Study ◽

Chain Conformation ◽

Side Chain ◽

Magnetic Resonance Study ◽

Side Chain Conformation ◽

Nuclear Magnetic

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Nuclear magnetic resonance study of side-chain conformation of phenylalanine residue in [Met5]-enkephalin: Solvent, pH, and temperature dependence

Biochimica et Biophysica Acta (BBA) - Protein Structure ◽

10.1016/0005-2795(79)90021-7 ◽

1979 ◽

Vol 577 (1) ◽

pp. 195-206 ◽

Cited By ~ 30

Author(s):

J. Kobayashi ◽

U. Nagai ◽

T. Higashijima ◽

T. Miyazawa

Keyword(s):

Nuclear Magnetic Resonance ◽

Magnetic Resonance ◽

Temperature Dependence ◽

Nuclear Magnetic Resonance Study ◽

Chain Conformation ◽

Side Chain ◽

Magnetic Resonance Study ◽

Side Chain Conformation ◽

Phenylalanine Residue ◽

Nuclear Magnetic

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A 13C nuclear magnetic resonance study of the effect of temperature on the side-chain polysiloxane liquid crystal containing trans-2-[p-(1-undecanyl-11-oxy)phenyl]-5-[(p-2(S)-methyl-1-butoxy)phenyl]-1,3-dioxane

Polymer ◽

10.1016/0032-3861(90)90295-a ◽

1990 ◽

Vol 31 (4) ◽

pp. 721-727 ◽

Cited By ~ 1

Author(s):

B.C. Perry ◽

B. Hahn ◽

V. Percec ◽

J.L. Koenig

Keyword(s):

Nuclear Magnetic Resonance ◽

Liquid Crystal ◽

Magnetic Resonance ◽

Nuclear Magnetic Resonance Study ◽

Effect Of Temperature ◽

Side Chain ◽

Magnetic Resonance Study ◽

13C Nuclear Magnetic Resonance ◽

Nuclear Magnetic

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Nuclear magnetic resonance study of the side-chain conformation of α-helical poly-β-benzyl-l-aspartate

Archives of Biochemistry and Biophysics ◽

10.1016/0003-9861(71)90165-2 ◽

1971 ◽

Vol 146 (2) ◽

pp. 587-590 ◽

Cited By ~ 5

Author(s):

D.N. Silverman ◽

G.T. Taylor ◽

H.A. Scheraga

Keyword(s):

Nuclear Magnetic Resonance ◽

Magnetic Resonance ◽

Nuclear Magnetic Resonance Study ◽

Chain Conformation ◽

Side Chain ◽

Magnetic Resonance Study ◽

Side Chain Conformation ◽

Nuclear Magnetic

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13C-nuclear magnetic resonance study of [85% 13C-enriched proline]thyrotropin releasing factor: 13C-13C vicinal coupling constants and conformation of the proline residue.

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.72.12.4948 ◽

1975 ◽

Vol 72 (12) ◽

pp. 4948-4952 ◽

Cited By ~ 31

Author(s):

W. Haar ◽

S. Fermandjian ◽

J. Vicar ◽

K. Blaha ◽

P. Fromageot

Keyword(s):

Nuclear Magnetic Resonance ◽

Magnetic Resonance ◽

Nuclear Magnetic Resonance Study ◽

Coupling Constants ◽

Magnetic Resonance Study ◽

Proline Residue ◽

Vicinal Coupling Constants ◽

13C Nuclear Magnetic Resonance ◽

Nuclear Magnetic

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Mevalonic acid is partially synthesized from amino acids in Halobacterium cutirubrum: a 13C nuclear magnetic resonance study.

Journal of Bacteriology ◽

10.1128/jb.166.2.559-564.1986 ◽

1986 ◽

Vol 166 (2) ◽

pp. 559-564 ◽

Cited By ~ 28

Author(s):

I Ekiel ◽

G D Sprott ◽

I C Smith

Keyword(s):

Amino Acids ◽

Nuclear Magnetic Resonance ◽

Magnetic Resonance ◽

Mevalonic Acid ◽

Nuclear Magnetic Resonance Study ◽

Magnetic Resonance Study ◽

13C Nuclear Magnetic Resonance ◽

Nuclear Magnetic

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Hindered Rotation in Poly(N-acyl)iminoalkylenes - A 13C Nuclear Magnetic Resonance Study

Zeitschrift für Naturforschung B ◽

10.1515/znb-1995-0918 ◽

1995 ◽

Vol 50 (9) ◽

pp. 1404-1411 ◽

Cited By ~ 1

Author(s):

Bernabé L. Rivas ◽

Klaus Albert ◽

Kurt E. Geckeler ◽

Ernst Bayer

Keyword(s):

Nuclear Magnetic Resonance ◽

Magnetic Resonance ◽

Cationic Polymerization ◽

Nmr Spectra ◽

Nuclear Magnetic Resonance Study ◽

Side Chain ◽

Magnetic Resonance Study ◽

Hindered Rotation ◽

13C Nuclear Magnetic Resonance ◽

C Nmr

AbstractPoly(N-acetyl)iminoethylene. poly(N-propionyl)iminoethylene and poly(N-acetyl)-2,2-dimethyliminoethylene were prepared by cationic polymerization in solution of 2-methyl- 2-oxazoline, 2-ethyl-2-oxazoline, and 2,4,4-trimethyl-2-oxazoline respectively. The 13C NMR spectra of the polymers obtained showed different sets of shifts for the carbon atoms of the backbone as well as for the N-acylimino side chain due to the restricted rotation of the Nacylimino group. The temperature dependence of the N-acylimino side chain signals showed a different coalescence behaviour depending on the substituents at both the main and the side chain.

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