Results 21 to 30 of about 128 (98)
Influence of Steric Effect on the Pseudo-Multicomponent Synthesis of N-Aroylmethyl-4-Arylimidazoles
Molecules, 2022 A pseudo-three-component synthesis of N-aroylmethylimidazoles 3 with three new C–N bonds formed regioselectively under microwave conditions was developed.
Nerith Rocio Elejalde-Cadena +5 more
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Biological Activity of Amidino-Substituted Imidazo [4,5-b]pyridines
Molecules, 2022 A series of cyano- and amidino-substituted imidazo[4,5-b]pyridines were synthesized using standard methods of organic synthesis, and their biological activity was evaluated.
Ida Boček Pavlinac +8 more
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Properties of Amidinated Glucagons [PDF]
European Journal of Biochemistry, 1980 Porcine glucagon has been reacted with a series of alkyl imidates. The ɛ‐amino group and both the α and ɛ‐amino groups were modified and the subsequent glucagon derivatives were purified by ion‐exchange chromatography and characterized. The modified glucagons were compared with native glucagon in their ability to activate hepatic adenylate cyclase and ...
Martin Rodbell, David E. Wright
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Molecules, 2013 Acetamidine hydrochloride and p-aminobenzamidine dihydrochloride interact with 3-ferrocenylmethylidene-2,4-pentanedione at 80–82 °C in the presence of K2CO3 in the water–alcohol medium in two tautomeric forms (the amidoimine and enediamine ones) with ...
Elena I. Klimova +4 more
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Synthetic studies towards bottromycin
Beilstein Journal of Organic Chemistry, 2012 Thio-Ugi reactions are described as an excellent synthetic tool for the synthesis of sterically highly hindered endothiopeptides. S-Methylation and subsequent amidine formation can be carried out in an inter- as well as in an intramolecular fashion.
Stefanie Ackermann +4 more
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Amidine Dications as Superelectrophiles
Journal of the American Chemical Society, 2009 2-Dimethylalkylammonium pyridinium and 2-dimethylalkylammonium pyrimidinium ditriflate salts are very powerful methylating agents toward phosphorus (triphenylphosphine) and nitrogen (triethylamine) nucleophiles. In competition experiments with triethylamine as nucleophile, these N-methyl disalts are more reactive methylating agents than dimethyl ...
Corr, Michael J +5 more
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Synthesis and Reactivity of Ynamine Amidines
CHIMIA, 1976 Ynamine amidines can be synthesized from the 1,3-dichlorotrimethine cyanine and primary amines. Ammonia affords the reactive ynamine amidine having a free imino group. This compound cyclises readily with carbon dioxide and phenylisocyanate.
B. Caillaux +4 more
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Fragmentation of amidinated peptide ions [PDF]
Journal of the American Society for Mass Spectrometry, 2004 The collision-induced dissociation characteristics of amidinated and unmodified tryptic peptides are compared using an ion trap mass spectrometer with both electrospray ionization and matrix-assisted laser/desorption ionization (MALDI). Several fragmentation pathways in a number of tryptic peptides of various precursor charge states are found to be ...
Richard L. Beardsley, James P. Reilly
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Quantitative determination of 0.05 % chlorhexidine solution by capillary electrophoresis
Zaporožskij Medicinskij Žurnal, 2019 The aim of the work was to estimate the quantitative content of 0.05 % chlorhexidine solution by capillary electrophoresis. Materials and methods.
A. M. Sampiiev +3 more
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