Relevant bibliographies by topics / Steric hindrance to conformational flipping

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  2. Dissertations / Theses
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Academic literature on the topic 'Steric hindrance to conformational flipping'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Steric hindrance to conformational flipping"

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Nori-Shargh, Davood, Mostafa Mohamadpour Amini, Maryam Jafari, Farzad Deyhimi, and Saeed Jameh-Bozorghi. "Ab Initio Study of Geminal Steric Hindrance Effects on the Stability of Conformations of Cyclohexane Derivatives." Journal of Chemical Research 2005, no. 8 (2005): 508–15. http://dx.doi.org/10.3184/030823405774663219.

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Ab initio and density functional theory methods (HF/3-21G*//HF/3-21G*, MP2/3-21G*//HF/3-21G*, B3LYP/3-21G*//HF/3-21G*, B3LYP/LANL2DZ*//HF/LANL2DZ*, MP2/LANL2DZ*//HF/LANL2DZ* and HF/LANL2DZ*//HF/LANL2DZ*) used to investigate the conformational properties of cyclohexane, 1,1-dimethylcyclohexane, 1,1-di-tert-butylcyclohexane, 1,1-bis(trimethylsilanyl)cyclohexane, 1,1-bis(trimethylgermanyl)cyclohexane and 1,1-bis(trimethylstannyl)cyclohex ane showed that the energy difference between the chair and twist-boat conformations and also the ring flipping energy barrier decreases from cyclohexane, 1,1-di
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P., L. Majumder, Mukhoti Nirmalendu, and Chattopadhyay (nee Lahiri) Saswati. "Agrostophyllanthrol and isoagrostophyllanthrol, two novel diastereomeric phenanthropyran derivatives from the orchid Agrostophyllum khasiyanum." Journal of Indian Chemical Society Vol. 85, Dec 2008 (2008): 1315–25. https://doi.org/10.5281/zenodo.5819637.

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Department of Chemistry. University College of Science, 92, Acharya Prafulla Chandra Road, Kolkata-700 009, India <em>E-mail</em> : priyalalm@hotmail.com <em>Manuscript received 11 November 2008, accepted 17 November 2008</em> Agrostophyllanthrol and isoagrostophyllanthrol, two novel diastereomeric phenanthropyran derivatives were isolated from the orchid <em>Agrostophyllum khasiyauum</em> which earlier afforded eleven stilbenoids, viz. the two dimeric phenanthrene derivatives agrostonin [2,2&#39;, 7, 7&#39; -tetrahydroxy-4,4&#39; ,6,6&#39; -tetramethoxy-1,1&#39; -biphenanthryl] and agrostonid
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Yang, Xinzhen, Inna Lipchina, Michelle Lifton, Liping Wang, and Joseph Sodroski. "Antibody Binding in Proximity to the Receptor/Glycoprotein Complex Leads to a Basal Level of Virus Neutralization." Journal of Virology 81, no. 16 (2007): 8809–13. http://dx.doi.org/10.1128/jvi.00394-07.

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ABSTRACT Hypothetically, antibodies may neutralize enveloped viruses by diverse mechanisms, such as disruption of receptor binding, interference with conformational changes required for virus entry, steric hindrance, or virus aggregation. Here, we demonstrate that retroviral infection mediated by the avian sarcoma-leukosis virus (ASLV-A) envelope glycoproteins can be neutralized by an antibody directed against a functionally unimportant component of a chimeric receptor protein. Thus, the binding of an antibody in proximity to the retroviral envelope glycoprotein-receptor complex, without bindi
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Jios, Jorge L., Rudolf Wartchow, Gustavo A. Echeverría, and Helmut Duddeck. "Aryl Naphthoates: A Conformational Analysis Supported by Single-Crystal X-Ray Diffraction." Australian Journal of Chemistry 69, no. 3 (2016): 291. http://dx.doi.org/10.1071/ch15071.

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The conformational study by X-ray diffraction of 12 aroyl esters of ortho-acetyl phenols is reported. The data are supported by theoretical calculations and described in terms of co-planarity, intramolecular steric interference, and intermolecular contacts. The observed hindrance was correlated with the C=O stretching vibration values in infrared spectroscopy.
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Fernández-Mateos, A., M. Rentzsch, L. Rodrı́guez Sánchez, and R. Rubio González. "Nucleophilic displacement of homoallylic tosylates: influence of steric hindrance and conformational rigidity." Tetrahedron 57, no. 23 (2001): 4873–79. http://dx.doi.org/10.1016/s0040-4020(01)00415-x.

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Bager, René, Jesper S. Johansen, Jan K. Jensen, et al. "Protein Conformational Change Delayed by Steric Hindrance from an N-Linked Glycan." Journal of Molecular Biology 425, no. 16 (2013): 2867–77. http://dx.doi.org/10.1016/j.jmb.2013.05.007.

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Gómez, Sara, Natalia Rojas-Valencia, and Albeiro Restrepo. "Analysis of Conformational Preferences in Caffeine." Molecules 27, no. 6 (2022): 1937. http://dx.doi.org/10.3390/molecules27061937.

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High level DLPNO–CCSD(T) electronic structure calculations with extended basis sets over B3LYP–D3 optimized geometries indicate that the three methyl groups in caffeine overcome steric hindrance to adopt uncommon conformations, each one placing a C–H bond on the same plane of the aromatic system, leading to the C–H bonds eclipsing one carbonyl group, one heavily delocalized C–N bond constituent of the fused double ring aromatic system, and one C–H bond from the imidazole ring. Deletion of indiscriminate and selective non-Lewis orbitals unequivocally show that hyperconjugation in the form of a
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Bodart, Laurie, Nikolay Tumanov, and Johan Wouters. "Structural variety of clofaziminium salts: effect of the counter-ion on clofaziminium conformation and crystal packing." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 75, no. 4 (2019): 674–86. http://dx.doi.org/10.1107/s2052520619007649.

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Clofazimine is a water-insoluble antimycobacterial agent gaining attention as a treatment for multi-drug resistant and extensively drug-resistant tuberculosis. Novel salts of clofazimine are reported with fumaric, succinic, 2,4-dihydroxybenzoic and terephthalic acids and with saccharin. The salt structures were obtained by single-crystal X-ray diffraction. The salts with 2,4-dihydroxybenzoic acid and with saccharin are solvated (methanol and acetonitrile, respectively). The reaction of clofazimine with terephthalic acid led to two salt cocrystals, one solvated and one non-solvated. These new c
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Rahul, Bhattacharya, K. Kesharwani Manoj, Manna Chinmoy, Ganguly Biswajit, and Pathak Tanmaya. "Influence of steric bulk around the vinyl sulfone bond on the reaction patterns of vinyl sulfone-modified carbohydrates. An experimental and theoretical investigation." Journal of Indian Chemical Society Vol. 90, Oct 2013 (2013): 1643–50. https://doi.org/10.5281/zenodo.5791648.

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Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721 302, West Bengal. India E-mail : tpathak@chem. iitkgp.ernet.in Computation and Simulation Unit (Analytical Discipline and Centralized Instrument Facility), CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, Gujarat, India <em>E-mail :</em> ganguly@csmcri.org <em>Manuscript received 13 June 2013, accepted 14 June 2013</em> Steric bulks attached to sulfur atom of vinyl sulfone-modified hex-2-enopyranosides and the anomeric centre control the rate of reactions of these Michael a
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Gibbs, A. F., D. Chapman, and S. A. Baldwin. "Proteolytic dissection as a probe of conformational changes in the human erythrocyte glucose transport protein." Biochemical Journal 256, no. 2 (1988): 421–27. http://dx.doi.org/10.1042/bj2560421.

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Tryptic digestion has been used to investigate the conformational changes associated with substrate translocation by the human erythrocyte glucose transporter. The effects of substrates and inhibitors of transport on the rates of tryptic cleavage at the cytoplasmic surface of the membrane have confirmed previous observations that this protein can adopt at least two conformations. In the presence of phloretin or 4,6-O-ethylidene-D-glucose, the rate of cleavage is slowed. Because these inhibitors bind preferentially at the extracellular surface of the transporter, their effects must result from
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Dissertations / Theses on the topic "Steric hindrance to conformational flipping"

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Massat, Alain. "Spectroscopie infra-rouge de cetones aliphatiques saturees : comportement associatif et analyse du massif nu(c=0) : apport a l'elucidation des effets de structure, de solvant et de conformation." Paris 7, 1987. http://www.theses.fr/1987PA077002.

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Un modele conformationnel est etabli pour une population de cetones aliphatiques saturees a partir des massifs nu (oh) de phenols associes aux cetones et des massifs nu (co) des cetones du splitting de ces massifs sont analyses: existance de deux complexes dimeres supposes n et pi; existence d'equilibres conformationnels; resonance de fermi
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Childers, M. C., Clare-Louise Towse, and V. Daggett. "The effect of chirality and steric hindrance on intrinsic backbone conformational propensities: tools for protein design." 2016. http://hdl.handle.net/10454/11432.

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No<br>The conformational propensities of amino acids are an amalgamation of sequence effects, environmental effects and underlying intrinsic behavior. Many have attempted to investigate neighboring residue effects to aid in our understanding of protein folding and improve structure prediction efforts, especially with respect to difficult to characterize states, such as disordered or unfolded states. Host-guest peptide series are a useful tool in examining the propensities of the amino acids free from the surrounding protein structure. Here, we compare the distributions of the backbone dihedral
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Book chapters on the topic "Steric hindrance to conformational flipping"

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Grossel, Martin. "Conformation and reactivity in alicyclic compounds." In Alicyclic Chemistry. Oxford University Press, 1997. http://dx.doi.org/10.1093/hesc/9780198501046.003.0004.

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This chapter discusses how the presence of other groups on a substituent on a cyclohexane ring can perturb the conformational equilibrium and lead to conformational locking of the ring geometry. It probes the effect of different conformations on the reactivity of substituted cyclohexanes and considers steric and stereo-electronic factors as the two main types of effect. It also explains that steric effects are derived from large and repulsive close contacts or small attractive interactions operating over greater distances. The chapter talks about the significance of steric interference in the
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Wipf, Peter, Erin M. Skoda, and André Mann. "Conformational Restriction and Steric Hindrance in Medicinal Chemistry." In The Practice of Medicinal Chemistry. Elsevier, 2015. http://dx.doi.org/10.1016/b978-0-12-417205-0.00011-0.

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Mann, André. "Conformational Restriction and/or Steric Hindrance in Medicinal Chemistry." In The Practice of Medicinal Chemistry. Elsevier, 2008. http://dx.doi.org/10.1016/b978-0-12-374194-3.00017-2.

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Mann, André. "CONFORMATIONAL RESTRICTION AND/OR STERIC HINDRANCE IN MEDICINAL CHEMISTRY." In The Practice of Medicinal Chemistry. Elsevier, 2003. http://dx.doi.org/10.1016/b978-012744481-9/50019-2.

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Rich, Daniel H., M. Angels Estiarte, and A. Hart Philip. "STEREOCHEMICAL ASPECTS OF DRUG ACTION I: CONFORMATIONAL RESTRICTION, STERIC HINDRANCE AND HYDROPHOBIC COLLAPSE." In The Practice of Medicinal Chemistry. Elsevier, 2003. http://dx.doi.org/10.1016/b978-012744481-9/50027-1.

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