ArticleJournal of computer-aided molecular design2003
Benzimidazole derivatives. 4. The recognition of the voluminous substituent attached to the basic amino group of 5-HT4 receptor antagonists.
Article in Journal of computer-aided molecular design, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors at 2 institutions in 1 country.
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Abstract
We report a structure-affinity analysis of an important element in the pharmacophore model for the recognition of 5-HT4 receptor antagonists: the voluminous substituent attached to the basic nitrogen of the ligand. We have designed, synthesized and pharmacologically evaluated a series of benzimidazole derivatives 1 containing a common molecular skeleton formed by N-[(4-piperidyl)methyl]-6-chlorobenzimidazole-4-carboxamide and four different substituents (R = butyl, 2-[(methylsulfonyl)amino]ethyl, 5-[(phenylacetyl)amino]pentyl, and 5-[(benzylsulfonyl)amino]pentyl). These compounds possess binding affinities in the nM range (Ki = 0.11-1.50 nM). Moreover, a ligand that contains a hydrogen atom attached to the basic nitrogen (R = H; Ki = 150 nM) is used as a control for structure-affinity relationships.
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