Inclusion complexes of β-cyclodextrin withN-acetyl-L-tryptophan andN-acetyl-D-tryptophan
نویسندگان
چکیده
منابع مشابه
Chiral discrimination in cyclodextrin complexes of amino acid derivatives: β-cyclodextrin/N-acetyl-L- phenylalanine andN-acetyl-D phenylalanine complexes
In a systematic study of molecular recognition of amino acid derivatives in solid-state β-cyclodextrin (β-CD) complexes, we have determined crystal structures for complexes of β-cyclodextrin/N-acetyl-L-phenylalanine at 298 and 20 K and for N-acetyl-D-phenylalanine at 298 K. The crystal structures for the N-acetyl-L-phenylalanine complex present disordered inclusion complexes for which the distr...
متن کاملThe fate of ingested acetyl-L- and D-tryptophan in the human subject.
The metabolism of acetyltryptophan has been studied by various workers. Baldwin and Berg (1) and Rose (2) have reported that acetyl-ntryptophan will not maintain nitrogen balance in the adult human; however, the acetylated L isomer was equal to an equivalent amount of L-tryptophan in this respect. In contrast with these results, Albanese et al. (3) report that, with the exception of a 5 per cen...
متن کاملChiral discrimination in cyclodextrin complexes of amino acid derivatives: beta-cyclodextrin/N-acetyl-L-phenylalanine and N-acetyl-D-phenylalanine complexes.
In a systematic study of molecular recognition of amino acid derivatives in solid-state beta-cyclodextrin (beta-CD) complexes, we have determined crystal structures for complexes of beta-cyclodextrin/N-acetyl-L-phenylalanine at 298 and 20 K and for N-acetyl-D-phenylalanine at 298 K. The crystal structures for the N-acetyl-L-phenylalanine complex present disordered inclusion complexes for which ...
متن کاملThe dynamics of conformational isomerization in flexible biomolecules. I. Hole-filling spectroscopy of N-acetyl tryptophan methyl amide and N-acetyl tryptophan amide.
The conformational isomerization dynamics of N-acetyl tryptophan methyl amide (NATMA) and N-acetyl tryptophan amide (NATA) have been studied using the methods of IR-UV hole-filling spectroscopy (HFS) and IR-induced population transfer spectroscopy (IR-PTS), which were developed for this purpose. Single conformations of these molecules were selectively excited in well-defined NH stretch fundamen...
متن کاملThe infrared and ultraviolet spectra of single conformations of methyl-capped dipeptides: N-acetyl tryptophan amide and N-acetyl tryptophan methyl amide
A combination of methods, including laser-induced fluorescence excitation, fluorescence-dip infrared ~FDIR! spectroscopy, and UV-UV hole-burning spectroscopy, have been used to study the infrared and ultraviolet spectra of single conformations of two methyl-capped dipeptides: N-acetyl tryptophan amide ~NATA! and N-acetyl tryptophan methyl amide ~NATMA!. Density functional theory calculations pr...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 2007
ISSN: 0108-7673
DOI: 10.1107/s0108767307095657