Results 251 to 260 of about 184,143 (305)

THE UTILIZATION OF IMIDAZOLES BY YEASTS

Canadian Journal of Microbiology, 1967
Eleven imidazoles were tested singly as nitrogen sources for 62 strains of yeast. L-Histidine and histamine were used by most strains, D-histidine by some, and histidinol only by a few. Four yeasts grew on compounds containing nitrogen only in the imidazole ring.
LaRue, T. A., Spencer, J. F. T.
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Involvement of imidazole-imidazole and imidazole-sulfhydryl interactions in photodynamic crosslinking of proteins

Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1984
Abstract Myoglobin is photooxidized when exposed to visible light in the presence of a sensitizer. In 8 M urea medium this photooxidation is followed by photodynamic interpeptide crosslinking. A partial inhibition of crosslinking is caused by lysine, mercaptoethanol and hydroxylamine, and by amidination of NH2 groups in the protein molecule. Complete
J. Van Steveninck, J. Kögeler, T.M.A.R. Dubbelman   +2 more
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Computational study of imidazole and methyl imidazoles

Journal of Molecular Structure: THEOCHEM, 1994
Abstract A semiempirical and ab initio study of the structures of imidazole, methyl imidazoles and the corresponding protonated and deprotonated ions is presented. The energies of the different isomers and tautomers are discussed and the protonation and deprotonation energies are given.
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The Significance of the Imidazole Ring in Anticonvulsant Activity of (Arylalkyl)imidazoles

Archiv der Pharmazie, 1988
AbstractThe imidazole ring in nafimidone [1‐(2‐naphthyl)‐2‐(1‐imidazolyl)ethanone] was substituted with various groups to investigate the significance of the imidazole ring in anticonvulsant activity. For this purpose, some 2‐acetylnaphthalene derivatives and their reduction products were synthesized. Several N‐alkylation methods were used to prepare 2‐
U, Caliş, S, Dalkara, M, Ertan, R, Sunal   +3 more
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Stimulation of glycolysis by imidazole

Life Sciences, 1973
Abstract Imidazole stimulated glycolysis by rat diaphragm homogenates; this effect increased as the concentration of imidazole was raised. The simultaneous changes in concentration of some of the glycolytic intermediates suggested an action of imidazole at a step between triose phosphate and pyruvate.
R, Parvin, N, Kalant
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Condensation of mononucleotides by imidazole

Journal of Molecular Evolution, 1971
The condensation of thymidine-5′-monophosphate was carried out in the presence of imidazole in aqueous solutions at neutral pH. Formation of oligo-deoxyribonucleotides up to four units was observed.
J D, Ibanez, A P, Kimball, J, Oró
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Metal imidazolate sulphate frameworks as a variation of zeolitic imidazolate frameworks

Chemical Communications, 2022
Both imidazolate and sulphate ions can connect metal ions to give extended structures resembling zeolitic imidazolate frameworks.
Kyungkyou Noh, Jaeung Sim, Jonghoon Kim, Jaheon Kim   +3 more
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Imidazole: Fungitoxic Derivatives

Science, 1967
Study of several new types of fungitoxic derivatives of imidazole reveals that imidazoles substituted on the imine nitrogen atom are likely to be active if the substituent is electron-attracting, and if the atom connecting it to the imidazolyl moiety has tetrahedral geometry.
H, Tolkmith, J N, Seiber, P B, Budde, D R, Mussell   +3 more
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Synthesis of difluoromethylthio imidazole from methylthio imidazole

Journal of Fluorine Chemistry, 1996
Abstract Demethylation of methylthio imidazole 1 via a Pummerer rearrangement onto the corresponding sulfoxide 2 afforded imidazole thiol 4 which was then difluoromethylated with the sodium chlorodifluoroacetate/NaI system in 71% overall yield.
Pierre Deprez, Jean-Paul Vevert
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Superelectrophilic Chemistry of Imidazoles

The Journal of Organic Chemistry, 2009
The mechanistic and synthetic chemistry of imidazole-based superelectrophiles has been studied. The protonated imidazole ring, or imidazolium group, is shown to enhance the electrophilic reactivity of an adjacent carboxonium group (compared to a related monocationic species).
Matthew R, Sheets, Ang, Li, Edward A, Bower, Andrew R, Weigel, Matthew P, Abbott, Robert M, Gallo, Adam A, Mitton, Douglas A, Klumpp   +7 more
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