Proton nuclear magnetic resonance studies on methylthiohydantoins, thiohydantoins, and hydantoins of amino acids

1977 ◽  
Vol 55 (5) ◽  
pp. 521-527 ◽  
Author(s):  
Tateo Suzuki ◽  
Tetsuhisa Tomioka ◽  
Katura Tuzimura
Keyword(s):  
Amino Acids ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Proton Magnetic Resonance ◽  
Proton Nuclear Magnetic Resonance ◽  
Terminal Amino Acid ◽  
Magnetic Resonance Studies ◽  
Hydantoin Derivatives ◽  
Terminal Amino ◽  
Derivatives Of

Proton magnetic resonance spectra of methylthiohydantoin (3-methyl-2-thiohydantoin), thiohydantoin (2-thiohydantoin), and hydantoin derivatives of amino acids were studied in dimethyl sulfoxide-d6. Their parent amino acids could be identified by the spectra. An application to the N- and C-terminal amino acid analysis of a tripeptide was examined.

Nuclear Magnetic Resonance Studies of Phenylthiohydantoin Amino Acids

1975 ◽  
Vol 53 (9) ◽  
pp. 1005-1009 ◽  
Author(s):  
C. S. Tsai ◽  
N. L. Fraser ◽  
H. Avdovich ◽  
J. P. Farant
Keyword(s):  
Amino Acids ◽  
Nuclear Magnetic Resonance ◽  
Amino Acid ◽  
Magnetic Resonance ◽  
Diagnostic Purpose ◽  
Edman Degradation ◽  
Terminal Amino Acid ◽  
Magnetic Resonance Studies ◽  
Terminal Amino ◽  
Derivatives Of

Proton magnetic spectra of 3-phenyl-2-thiohydantoin derivatives of common amino acids in deuterated dimethyl sulfoxide were recorded. Spectral data pertaining to characteristic protons for diagnostic purpose were compiled. Their application to the N-terminal amino acid analysis of peptide by Edman degradation was examined.

Nuclear magnetic resonance studies. XX. Structures and 1H nuclear magnetic resonance parameters of the bromination products of some substituted bicyclo[2.2.2]octenes

1970 ◽  
Vol 48 (7) ◽  
pp. 1098-1104
Author(s):  
M. Gordon Gurudata ◽  
J. B. Stothers
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Proton Magnetic Resonance ◽  
Resonance Parameters ◽  
Magnetic Resonance Studies ◽  
1H Nuclear Magnetic Resonance ◽  
Magnetic Resonance Parameters ◽  
Derivatives Of ◽  
Nuclear Magnetic

The stereochemical course of the reaction of some 7,8-dicarboxylate derivatives of 1,3,5,5-tetramethyl-bicyclo[2.2.2]oct-2-ene with bromine has been established. The proton magnetic resonance parameters of these products are discussed.

19F nuclear magnetic resonance studies of the interaction of inhibitors with chymotrypsin. Ring-fluorinated derivatives of N-trifluoroacetylphenylalanine

1978 ◽  
Vol 31 (10) ◽  
pp. 2179 ◽  
Author(s):  
M Tsavalos ◽  
BC Nicholson ◽  
TM Spotswood
Keyword(s):  
Amino Acids ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Active Site ◽  
Enzyme Inhibitor ◽  
Aromatic Amino Acids ◽  
Binding Parameters ◽  
Magnetic Resonance Studies ◽  
Derivatives Of

The complexes formed between chymotrypsin and the doubly fluorine- labelled inhibitors, o-, m- and p-fluoro-N-trifluoroacetyl-D- phenylalanine and 2,4-difluoro-N-trifluoroacetyl-D-phenylalanine, have been characterized by 19F N.M.R. spectroscopy and binding parameters, ΔB and KI, have been derived. The results confirm the importance of the amido binding site in orienting aromatic amino acids at the active site of chymotrypsin. Changes in ΔB, the change in chemical shift of the enzyme-bound inhibitor, are shown to be a very sensitive probe of enzyme-inhibitor interactions.

X-Ray Crystallographic and Proton Nuclear Magnetic Resonance Studies of β-Hydroxy-N-nitrosamines derived from α-Amino Acids and Ephedrine

Tetrahedron ◽  
2000 ◽  
Vol 56 (45) ◽  
pp. 8799-8807 ◽  
Author(s):  
Shawn R. Hitchcock ◽  
George P. Nora ◽  
Christine Hedberg ◽  
David M. Casper ◽  
Laura S. Buchanan ◽  
...  
Keyword(s):  
Amino Acids ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Proton Nuclear Magnetic Resonance ◽  
Magnetic Resonance Studies ◽  
X Ray ◽  
Nuclear Magnetic

ChemInform Abstract: X-Ray Crystallographic and Proton Nuclear Magnetic Resonance Studies of β-Hydroxy-N-nitrosamines Derived from α-Amino Acids and Ephedrine.

ChemInform ◽  
2001 ◽  
Vol 32 (10) ◽  
pp. no-no
Author(s):  
Shawn R. Hitchcock ◽  
George P. Nora ◽  
Christine Hedberg ◽  
David M. Casper ◽  
Laura S. Buchanan ◽  
...  
Keyword(s):  
Amino Acids ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Proton Nuclear Magnetic Resonance ◽  
Magnetic Resonance Studies ◽  
X Ray ◽  
Nuclear Magnetic
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