Results 41 to 50 of about 1,936,115 (314)
Hydrogen-Bond-Promoted Hetero-Diels−Alder Reactions of Unactivated Ketones
, 2016 We report the first examples of hydrogen-bond-promoted acceleration of hetero-Diels−Alder reactions and the use of such catalysis for the hetero-Diels−Alder reactions of simple, unactivated ketones.
Viresh H. Rawal (1323897) +1 more
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Expression, purification and characterization of the HIV-1 coreceptor CCR5 and its ligand RANTES and high-pressure NMR investigation of hydrogen bonds in biomolecules [PDF]
, 2010 Nuclear magnetic resonance spectroscopy is a very versatile technique for the investigation of biomolecular structures and dynamics. In this thesis, solution and solid state NMR methods have been applied to study a membrane protein and its interactions ...
Nisius, Lydia
core +1 more source
, 2022 In this study, we reported a hydrogen-bond-donor-directed enantiodivergent vinylogous aldol–cyclization cascade reaction of 3-alkylidene oxindoles with isatins and o-quinones.
Yun-Jie Tsou (12009097) +11 more
core +1 more source
Theoretical Study of Heteroatom Resonance-Assisted Hydrogen Bond: Effect of Substituent on π-delocalization [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2010 The concept of Resonance Assisted Hydrogen Bond (RAHB), which usually occurs in b diketons, has a remarkable role in chemistry. These molecules, which contain heteroatom particularly O and N, are species with biological interest in protein folding and ...
Ali Heydar Pakiari, Maryam Farrokhnia
doaj
Bis(dimethylammonium) 2,5-dihydroxybenzene-1,4-disulfonate
Acta Crystallographica Section E, 2012 In the crystal of the title salt, 2C2H8N+·C6H4O8S22−, the anion lies on a center of inversion. The dimethylammonium cation forms one N—H...O hydrogen bond and another bifurcated N—H...O hydrogen bond.
Shan Gao, Seik Weng Ng
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Hydrogen-Bond Networks for Hydrolyses of Anhydrides
, 2016 Hydrogen-Bond Networks for Hydrolyses of ...
Shinichi Yamabe (1980739) +1 more
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Quantifying the ability of the CF2H group as a hydrogen bond donor
Beilstein Journal of Organic ChemistryThe CF2H group can act as a hydrogen bond donor, serving as a potential surrogate for OH or SH groups but with a weaker hydrogen bond donation ability.
Matthew E. Paolella +4 more
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(E)-4-Hydroxy-N′-(2-hydroxy-4-methoxybenzylidene)benzohydrazide monohydrate
Acta Crystallographica Section E, 2009 The Schiff base molecule of the title compound, C15H14N2O4·H2O, adopts a trans configuration with respect to the C=N double bond; the Schiff base itself is almost planar (r.m.s. deviation for all non-H atoms = 0.040 Å).
Nooraziah Mohd Lair +2 more
doaj +1 more source
Reconstructing enzyme evolution by protein engineering
FEBS Letters, EarlyView.Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler +2 more
wiley +1 more source