Structure-activity relationship study of first selective inhibitor of excitatory amino acid transporter subtype 1: 2-amino-4-(4-methoxyphenyl)-7-(naphthalen-1-yl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile (UCPH-101)

Mette Norman Erichsen, Tri Hien Viet Huynh, Bjarke Abrahamsen, Jesper Frank Bastlund, Christoffer Bundgaard, Olja Monrad, Anders Bekker-Jensen, Christina Wøhlk Nielsen, Karla Andrea Frydenvang, Anders Asbjørn Jensen, Lennart Bunch

    85 Citationer (Scopus)

    Abstract

    The excitatory amino acid transporters (EAATs) are expressed throughout the central nervous system, where they are responsible for the reuptake of the excitatory neurotransmitter (S)-glutamate (Glu).(1)Recently, we have reported the discovery of the first subtype selective EAAT1 inhibitor 2-amino-4-(4-methoxyphenyl)-7-(naphthalen-1-yl)-5-oxo-5,6,7,8-tetrahydro-4H- chromene-3-carbonitrile (UCPH-101) (1b) and presented an introductory structure-activity relationship (SAR) study.(2)Here, we present a detailed SAR by the design, synthesis, and pharmacological evaluation of analogues 1g-1t. By comparison of potencies of 1b, 1h, and 1i versus 1j, it is evident that potency is largely influenced by the chemical nature of the R1 substituent. The study also demonstrates that any chemical change of the functional groups or a change to the parental scaffold results in the complete loss of inhibitory activity of the compounds at EAAT1. Finally, a bioavailability study of UCPH-101 determined the half-life to be 30 min in serum (rats) but also that it was not able to penetrate the blood-brain barrier to any significant degree.

    OriginalsprogEngelsk
    TidsskriftJournal of Medicinal Chemistry
    Vol/bind53
    Udgave nummer19
    Sider (fra-til)7180–7191
    ISSN0022-2623
    DOI
    StatusUdgivet - 14 okt. 2010

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