Results 221 to 230 of about 28,724 (253)
Some of the next articles are maybe not open access.
A silaproline-containing dipeptide
Acta Crystallographica Section C Crystal Structure Communications, 2000The silaproline-containing dipeptide N-(3, 3-dimethyl-1-pivaloyl-1-aza-3-sila-5-cyclopentylcarbonyl)-L- alanine isopropylamide, C(17)H(33)N(3)O(3)Si, has two independent molecules in the asymmetric unit and each adopts a beta-II folded conformation, where the amide on the terminal C interacts intramolecularly with the pivaloyl O atom. The five-membered
B, Vivet +5 more
openaire +2 more sources
Biopolymers, 1969
AbstractThe amide bond in L,L‐ and L,D‐α‐chloropropionylalanine methyl ester is shown to be trans by molar polarization and infrared spectroscopy. In these dipeptide diastereoisomer analogues, therefore, differences in physical properties, i.e., melting points, crystalline forms, gas chromatographic mobilities, etc., depend on preferred molecular ...
openaire +3 more sources
AbstractThe amide bond in L,L‐ and L,D‐α‐chloropropionylalanine methyl ester is shown to be trans by molar polarization and infrared spectroscopy. In these dipeptide diastereoisomer analogues, therefore, differences in physical properties, i.e., melting points, crystalline forms, gas chromatographic mobilities, etc., depend on preferred molecular ...
openaire +3 more sources
Human renin inhibiting dipeptide
European Journal of Pharmacology, 1986KRI-1177, a dipeptide containing nor-statine inhibited renin activity in human and Japanese monkey plasma to a markedly greater extent than that in dog, rabbit and rat plasma. The systemic blood pressure of anesthetized monkeys was lowered by intravenous injections of this compound which also reduced plasma renin activity and concentration of ...
N, Toda +4 more
openaire +2 more sources
Fluoroolefin dipeptide isosteres -II.
Tetrahedron Letters, 1990Abstract The syntheses of Gly-Gly and racemic Phe-Gly fiuoroolefin dipeptide isosteres are described, the first examples of a new class of peptide analogues.
Thomas Allmendinger +2 more
openaire +1 more source
Related dipeptide and characteristic dipeptide of optimal pH in α-amylase
Biochemical and Biophysical Research Communications, 2002Alpha-amylase is an enzyme of great significance to industry, but most alpha-amylases are unstable at lower pH. In this paper, we have studied the related dipeptide and characteristic dipeptide of optimal pH in alpha-amylase. On analysis, it gives the explicit results as follows: (1) Ten dipeptides are associated with alpha-amylase's optimal pH. AH, DV,
Ge-Xin, Zhang, Wei-Jiang, Li
openaire +2 more sources
2015
Carnosine in the Context of Histidine Containing Dipeptides Carnosine and its Homologues in Foods The Chemistry of Imidazole Dipeptides The Chemistry of Carnosine Derivatives Chiral Carnosine The Biochemistry of Enzymes Producing Carnosine and Anserine The Biochemistry of Anserine and Carnosine Degrading Enzymes Carnosine and Derivatives as Inhibitors ...
openaire +1 more source
Carnosine in the Context of Histidine Containing Dipeptides Carnosine and its Homologues in Foods The Chemistry of Imidazole Dipeptides The Chemistry of Carnosine Derivatives Chiral Carnosine The Biochemistry of Enzymes Producing Carnosine and Anserine The Biochemistry of Anserine and Carnosine Degrading Enzymes Carnosine and Derivatives as Inhibitors ...
openaire +1 more source
Liebigs Annalen der Chemie, 1992
AbstractThe dinitroxylamide 8 is synthesized from the monomer 4‐amino‐4‐carboxy‐2,2,6,6‐tetramethylpiperidine‐1‐oxyl (2). The benzyloxycarbonyl group as amino protective group and the methoxy group as carboxyl protective group have been introduced. The acylation of compound 3 with compound 4 is carried out in the presence of dicyclohexylcarbodiimide ...
Lothar Dulog, Wei Wang
openaire +1 more source
AbstractThe dinitroxylamide 8 is synthesized from the monomer 4‐amino‐4‐carboxy‐2,2,6,6‐tetramethylpiperidine‐1‐oxyl (2). The benzyloxycarbonyl group as amino protective group and the methoxy group as carboxyl protective group have been introduced. The acylation of compound 3 with compound 4 is carried out in the presence of dicyclohexylcarbodiimide ...
Lothar Dulog, Wei Wang
openaire +1 more source
Glutamine dipeptides in clinical nutrition
Nutrition, 1997Glutamine is a conditional indispensable amino acid during stress. However, limited solubility and instability of glutamine prevent its addition to presently available nutritional preparations. To overcome these drawbacks, we propose the dipeptide concept by which stable and highly soluble synthetic glutamine containing dipeptides are used.
P, Fürst, K, Pogan, P, Stehle
openaire +2 more sources
Determination of dipeptides in urine
Clinica Chimica Acta, 1974Abstract The urine of a patient suffering from dermatological purpura was examined for dipeptides by combined gas chromatography—mass spectrometry. Several dipeptides were identified and all were of the general formula, R proline, where R is one of the amino acids, glycine, alanine, leucine, isoleucine, valine, phenylalanine, glutamic acid, aspartic ...
R A, Johnstone +5 more
openaire +2 more sources
Simulated dipeptide recognition by vancomycin
Journal of Molecular Recognition, 1997The antimicrobial activity of vancomycin and related glycopeptide antibiotics is due to stereospecific recognition of polypeptide components in bacterial cell walls. To better understand how these antibiotics recognize polypeptide determinants, we have developed dynamic models of the complexes formed by the vancomycin aglycon and two different ...
D, Li +6 more
openaire +2 more sources