Electronic and ESR Spectra of Copper(II) Complexes with N,N-Dialkyl Amino Acids

1992 ◽  
Vol 613 (7) ◽  
pp. 132-136 ◽  
Author(s):  
Nevenka Pauli? ◽  
Vesna N�thig-Laslo ◽  
Vladimir Simeon
Keyword(s):  
Amino Acids ◽  
Esr Spectra ◽  
Dialkyl Amino Acids

3-Benzoyl-2-isopropyl-4-alkyloxazolidin-5-ones as Efficient and Inexpensive Sources of Enantiopure ?,?-Dialkyl ?-Amino Acids and ?,?-Dialkyl ?,?-Diaminopropionic Acids.

ChemInform ◽  
2005 ◽  
Vol 36 (21) ◽  
Author(s):  
Susana Rojas-Lima ◽  
Omar Tellez-Zenteno ◽  
Heraclio Lopez-Ruiz ◽  
Lizeth Loubet-Gonzalez ◽  
Alejandro Alvarez-Hernandez
Keyword(s):  
Amino Acids ◽  
Dialkyl Amino Acids

FREE RADICALS OF BIOLOGICAL INTEREST: PART II. ELECTRON SPIN RESONANCE (ESR) SPECTRA OF 2537 A IRRADIATED AMINO ACIDS

1967 ◽  
Vol 45 (12) ◽  
pp. 1831-1839 ◽  
Author(s):  
W. F. Forbes ◽  
P. D. Sullivan
Keyword(s):  
Amino Acids ◽  
Electron Spin Resonance ◽  
Electron Spin ◽  
Hydrogen Abstraction ◽  
Esr Spectra ◽  
Side Chain ◽  
Biological Interest ◽  
Spin Resonance ◽  
Cyclohexadienyl Radical ◽  
Secondary Radical

Polycrystalline amino acids, when irradiated with 2537 Å light, afford a variety of electron spin resonance signals. These signals are generally stable at room temperature for relatively long periods of time. For a number of the spectra obtained, there is evidence that more than one radical species contributes to the observed spectra. The signals obtained frequently differ from those obtained on exposure to ionizing radiation. The postulated species formed can often be visualized as being formed by effective hydrogen abstraction from the alkyl-substituted tertiary carbon atom or from the —OH, —SH or —NH group contained in the side chain. For L-phenylalanine a secondary radical is obtained, which is ascribed to a cyclohexadienyl radical.

Conformational effects of chiral α,α-dialkyl amino acids I. C-Terminal tetrapeptides of emerimicin containing α-ethylalanine

2009 ◽  
Vol 32 (6) ◽  
pp. 544-555 ◽  
Author(s):  
GARLAND R. MARSHALL ◽  
JOHN D. CLARK ◽  
JAMES B. DUNBAR ◽  
G. DAVID SMITH ◽  
JANUSZ ZABROCKI ◽  
...  
Keyword(s):  
Amino Acids ◽  
Conformational Effects ◽  
Dialkyl Amino Acids

Conformational analysis and helical preferences of normal and ?,?-dialkyl amino acids

Biopolymers ◽  
1990 ◽  
Vol 30 (5-6) ◽  
pp. 533-546 ◽  
Author(s):  
Edward E. Hodgkin ◽  
John D. Clark ◽  
Katherine R. Miller ◽  
Garland R. Marshall
Keyword(s):  
Amino Acids ◽  
Conformational Analysis ◽  
Dialkyl Amino Acids

ChemInform Abstract: Enzymatic Coupling of α,α-Dialkyl Amino Acids Using Inverse Substrates as Acyl Donors.

ChemInform ◽  
2010 ◽  
Vol 28 (28) ◽  
pp. no-no
Author(s):  
H. SEKIZAKI ◽  
K. ITOH ◽  
E. TOYOTA ◽  
K. TANIZAWA
Keyword(s):  
Amino Acids ◽  
Dialkyl Amino Acids ◽  
Acyl Donors

scholarly journals Factors governing helical preference of peptides containing multiple alpha,alpha-dialkyl amino acids.

1990 ◽  
Vol 87 (1) ◽  
pp. 487-491 ◽  
Author(s):  
G. R. Marshall ◽  
E. E. Hodgkin ◽  
D. A. Langs ◽  
G. D. Smith ◽  
J. Zabrocki ◽  
...  
Keyword(s):  
Amino Acids ◽  
Dialkyl Amino Acids

Facile synthesis of protected dipeptide acids containing C-terminal α,α-dialkyl amino acids.

1991 ◽  
Vol 32 (28) ◽  
pp. 3407-3408 ◽  
Author(s):  
Frank Bambino ◽  
Robert T.C. Brownlee ◽  
Francis C.K. Chiu
Keyword(s):  
Amino Acids ◽  
Facile Synthesis ◽  
Dialkyl Amino Acids
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