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  • Title: A new class of 5-HT2B antagonists possesses favorable potency, selectivity, and rat pharmacokinetic properties.
    Author: Moss N, Choi Y, Cogan D, Flegg A, Kahrs A, Loke P, Meyn O, Nagaraja R, Napier S, Parker A, Thomas Peterson J, Ramsden P, Sarko C, Skow D, Tomlinson J, Tye H, Whitaker M.
    Journal: Bioorg Med Chem Lett; 2009 Apr 15; 19(8):2206-10. PubMed ID: 19307114.
    Abstract:
    We have been exploring the potential of 5-HT(2B) antagonists as a therapy for chronic heart failure. To assess the potential of this therapeutic approach, we sought compounds possessing the following attributes: (a) potent and selective antagonism of the 5-HT(2B) receptor, (b) low impact of serum proteins on potency, and (c) desirable pharmacokinetic properties. This Letter describes our investigation of a biphenyl benzimidazole class of compounds that resulted in 5-HT(2B) antagonists possessing the above attributes. Improving potency in a human serum albumin shift assay proved to be the most significant SAR discovery.
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