Results 21 to 30 of about 56,931 (242)

The Chemistry of Guanidine, Guanidinium, and Guanidinate Compounds [PDF]

Australian Journal of Chemistry, 2014
Guanidine-based functional groups occur in many branches of chemistry, due in part to their ability to exist as neutral (guanidine), cationic (guanidinium), and anionic (guanidinate) entities. With such a rich chemistry, it is undoubtedly difficult for researchers to follow the development of so many aspects of guanidine chemistry, especially when ...
Choon Hong Tan, Martyn Coles
openaire   +1 more source

TBD- or PS-TBD-Catalyzed One-Pot Synthesis of Cyanohydrin Carbonates and Cyanohydrin Acetates from Carbonyl Compounds

Molecules, 2016
Cyanation reactions of carbonyl compounds with methyl cyanoformate or acetyl cyanide catalyzed by 5 mol % of 1,5,7-triazabicyclo[4,4,0]dec-5-ene (TBD) were examined.
Satoru Matsukawa, Junya Kimura, Miki Yoshioka   +2 more
doaj   +1 more source

Antitumor, Antioxidant and Antimicrobial Studies of Substituted Pyridylguanidines

Molecules, 2013
A series of N-pivaloyl-N′-(alkyl/aryl)-N′′-pyridylguanidine of general formula C4H9CONHC(NR1R2)NPy have been synthesized and characterized using elemental analysis, FT-IR, multinuclear NMR spectroscopy, and in the case of compounds 7 and 11, by single ...
Boris Vabre, Davit Zargarian, Ghulam Murtaza, Hizbullah Khan, Naseer Ali Shah, Amin Badshah, Muhammad Said, Muhammad Rashid Khan   +7 more
doaj   +1 more source

Synthesis of pyrimidines using nano-NiZr4 (PO4)6 as a retrievable and robust heterogeneous catalyst [PDF]

Nanochemistry Research, 2020
Nano-NiZr4 (PO4)6 has been used as an effective and retrievable heterogeneous catalyst for the synthesis of pyrimidines through the reaction of benzaldehydes, guanidinehydrochloride and malononitrile under reflux conditions in ethanol.
Hossein Shahbazi-Alavi, Javad Safaei-Ghomi   +1 more
doaj   +1 more source

Dependence of Antimicrobial Effects of Guanidine-containing Pectin Derivatives from Some Structural Characteristics

Разработка и регистрация лекарственных средств, 2022
Introduction. Up to the present time, there are practically no studies on the relationship between the structural characteristics and biological activity of antimicrobial polymers synthesized by the chemical addition of guanidine groups to polysaccharide
O. R. Akhmedov, S. A. Shomurotov, A. S. Turaev, A. V. Sidarenka   +3 more
doaj   +1 more source

Direct air capture of CO2 – topological analysis of the experimental electron density (QTAIM) of the highly insoluble carbonate salt of a 2,6-pyridine-bis(iminoguanidine), (PyBIGH2)(CO3)(H2O)4

IUCrJ, 2019
Chemical bonding and all intermolecular interactions in the highly insoluble carbonate salt of a 2,6-pyridine-bis(iminoguanidine), (PyBIGH2)(CO3)(H2O)4, recently employed in the direct air capture of CO2 via crystallization, have been analyzed within the
Christopher G. Gianopoulos, Zhijie Chua, Vladimir V. Zhurov, Charles A. Seipp, Xiaoping Wang, Radu Custelcean, A. Alan Pinkerton   +6 more
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Guanidine hydrochloride reactivates an ancient septin hetero-oligomer assembly pathway in budding yeast

eLife, 2020
Septin proteins evolved from ancestral GTPases and co-assemble into hetero-oligomers and cytoskeletal filaments. In Saccharomyces cerevisiae, five septins comprise two species of hetero-octamers, Cdc11/Shs1–Cdc12–Cdc3–Cdc10–Cdc10–Cdc3–Cdc12–Cdc11/Shs1 ...
Courtney R Johnson, Marc G Steingesser, Andrew D Weems, Anum Khan, Amy Gladfelter, Aurélie Bertin, Michael A McMurray   +6 more
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Self-Assembled Lipoplexes of Short Interfering RNA (siRNA) Using Spermine-Based Fatty Acid Amide Guanidines: Effect on Gene Silencing Efficiency

Pharmaceutics, 2011
Four guanidine derivatives of N4,N9-diacylated spermine have been designed, synthesized, and characterized. These guanidine-containing cationic lipids bound siRNA and formed nanoparticles. Two cationic lipids with C18 unsaturated chains, N1,N12-diamidino-
Abdelkader A. Metwally, Ian S. Blagbrough   +1 more
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Sequence-specific RNA cleavage by PNA conjugates of the metal-free artificial ribonuclease tris(2-aminobenzimidazole)

Beilstein Journal of Organic Chemistry, 2015
Tris(2-aminobenzimidazole) conjugates with antisense oligonucleotides are effective site-specific RNA cleavers. Their mechanism of action is independent of metal ions. Here we investigate conjugates with peptide nucleic acids (PNA).
Friederike Danneberg, Alice Ghidini, Plamena Dogandzhiyski, Elisabeth Kalden, Roger Strömberg, Michael W. Göbel   +5 more
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From lab reagent to metabolite: the riboswitch ligand guanidine as a relevant compound in bacterial physiology

Journal of Bacteriology
Efforts of the last 20 years in validating novel riboswitches led to the identification of numerous new motifs recognizing compounds with well-established biological functions.
Payton Bowman, Hubert Salvail
doaj   +1 more source