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  • Title: Novel and selective 5-HT2C/2B receptor antagonists as potential anxiolytic agents: synthesis, quantitative structure-activity relationships, and molecular modeling of substituted 1-(3-pyridylcarbamoyl)indolines.
    Author: Bromidge SM, Dabbs S, Davies DT, Duckworth DM, Forbes IT, Ham P, Jones GE, King FD, Saunders DV, Starr S, Thewlis KM, Wyman PA, Blaney FE, Naylor CB, Bailey F, Blackburn TP, Holland V, Kennett GA, Riley GJ, Wood MD.
    Journal: J Med Chem; 1998 May 07; 41(10):1598-612. PubMed ID: 9572885.
    Abstract:
    The synthesis, biological activity, and molecular modeling of a novel series of substituted 1-(3-pyridylcarbamoyl)indolines are reported. These compounds are isosteres of the previously published indole urea 1 (SB-206553) and illustrate the use of aromatic disubstitution as a replacement for fused five-membered rings in the context of 5-HT2C/2B receptor antagonists. By targeting a region of space previously identified as sterically allowed at the 5-HT2C receptor but disallowed at the 5-HT2A receptor, we have identified a number of compounds which are the most potent and selective 5-HT2C/2B receptor antagonists yet reported. 46 (SB-221284) was selected on the basis of its overall biological profile for further evaluation as a novel, potential nonsedating anxiolytic agent. A CoMFA analysis of these compounds produced a model with good predictive value and in addition good qualitative agreement with both our 5-HT2C receptor model and our proposed binding mode for this class of ligands within that model.
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