Mechanism-based QSAR approach to the study of the toxicity of endocrine active substances

Verfasser / Beitragende:
[C. D. Selassie, R. Garg, S. Mekapati]
Ort, Verlag, Jahr:
2003
Enthalten in:
Pure and Applied Chemistry, 75/11-12(2003-01-01), 2363-2373
Format:
Artikel (online)
ID: 378861484
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245 0 0 |a Mechanism-based QSAR approach to the study of the toxicity of endocrine active substances  |h [Elektronische Daten]  |c [C. D. Selassie, R. Garg, S. Mekapati] 
520 3 |a Mechanism-based QSAR models for interactions between various ligands and the estrogenic receptor are developed by using well-developed physicochemical parameters. Common features of these QSARs are identified, and deficiencies in some datasets are highlighted. The relative binding affinities of various substituted hexestrols to estrogen receptors are examined in terms of their steric, electronic, and hydrophobic attributes. Different QSARs for hexestrols and tamoxifens reveal that steric effects are of overriding importance in variations of binding affinity. In the few cases where a large number of diverse substituents are located on aromatic rings, electronic effects emerge and suggest that electron-donating groups enhance binding to the receptor while hydrophobicity plays a marginal role in decreasing binding affinity. With substituted phenols bearing alkyl-type substituents and substituted hydroxy-biphenyls, the binding is strictly dependent on hydrophobicity and size. These QSAR models are described in detail and examined together to illustrate the utility of lateral validation in mechanistic interpretation. 
540 |a © 2013 Walter de Gruyter GmbH, Berlin/Boston 
700 1 |a Selassie  |D C. D.  |u Chemistry Department, Pomona College, Claremont, CA 91711, USA  |4 aut 
700 1 |a Garg  |D R.  |u Chemistry Department, Pomona College, Claremont, CA 91711, USA  |4 aut 
700 1 |a Mekapati  |D S.  |u Chemistry Department, Pomona College, Claremont, CA 91711, USA  |4 aut 
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950 |B NATIONALLICENCE  |P 700  |E 1-  |a Garg  |D R.  |u Chemistry Department, Pomona College, Claremont, CA 91711, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Mekapati  |D S.  |u Chemistry Department, Pomona College, Claremont, CA 91711, USA  |4 aut 
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