Interactions between terminally substituted amino acids in an aqueous and a non-aqueous environment. Enthalpic interaction coefficients in water and in N,N-dimethylformamide at 25�C
作者:Hilary E. Kent、Terence H. Lilley、Peter J. Milburn、Michael Bloemendal、Gus Somsen
DOI:10.1007/bf00648899
日期:1985.2
L-leucine, and L-phenylalanine, dissolved in N,N-dimethylformamide (DMF) as a solvent have been measured at 25°C. The results obtained have been analyzed to give the enthalpicinteraction (or virial) coefficients of the solutes and these are compared with information previously obtained in aqueous systems. There are marked differences in the interaction properties in the two solvents and, while the
Aqueous solutions containing amino acids and peptides. Part 11.—Enthalpy of dilution of single and binary solute solutions of N-acetylglycine amide, N-acetyl-L-alanine amide, N-acetyl-L-valine amide and N-acetyl-L-leucine amide at 298.15 K
作者:G. Michael Blackburn、Terence H. Lilley、Elizabeth Walmsley
DOI:10.1039/f19807600915
日期:——
The enthalpies of dilution of aqueoussolutionscontaining N-acetylglycine amide (G), N-acetyl-L-alanine amide (A), N-acetyl-L-valine amide (V) and N-acetyl-L-leucine amide (L) and equimolal solutions of G + A, G + V, G + L, A + V, A + L and V + L have been measured at 298.15 K. The results obtained have been used to calculate the pairwise enthalpy coefficients for like–like and like–unlike solute interactions
Thiyl Radicals Abstract Hydrogen Atoms from the <sup>α</sup>C−H Bonds in Model Peptides: Absolute Rate Constants and Effect of Amino Acid Structure
作者:Thomas Nauser、Christian Schöneich
DOI:10.1021/ja0293599
日期:2003.2.1
of the homolytic bonddissociationenergies (BDEs) only, the (alpha)C-H bonds of peptides and proteins would present suitable targets for hydrogen abstraction by thiyl radicals. However, additional parameters such as polar and conformational effects may control such hydrogen-transfer processes. To evaluate the potential of thiyl radicals for hydrogen abstractionfrom (alpha)C-H bonds, we provide the
Matsuo,H. et al., Chemical and pharmaceutical bulletin, 1967, vol. 15, p. 391 - 398
作者:Matsuo,H. et al.
DOI:——
日期:——
The synthesis and conformational analysis of amino acid–tetrahydroanthranilic acid hybrids
作者:Jason E. Imbriglio、Daniel DiRocco、Subharekha Raghavan、Richard G. Ball、Nancy Tsou、Ralph T. Mosley、James R. Tata、Steven L. Colletti
DOI:10.1016/j.tetlet.2008.05.148
日期:2008.8
The optimization of a palladium-catalyzed amidation reaction providing a new class of amino acid-tetrahydroanthranilic acid derivatives has been achieved. The scope of the reaction and preliminary conformational analysis of the resulting series of molecules is discussed. (C) 2008 Elsevier Ltd. All rights reserved.