TY - JOUR
T1 - Structure-activity relationship study of first selective inhibitor of excitatory amino acid transporter subtype 1
T2 - 2-amino-4-(4-methoxyphenyl)-7-(naphthalen-1-yl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile (UCPH-101)
AU - Erichsen, Mette Norman
AU - Huynh, Tri Hien Viet
AU - Abrahamsen, Bjarke
AU - Bastlund, Jesper Frank
AU - Bundgaard, Christoffer
AU - Monrad, Olja
AU - Bekker-Jensen, Anders
AU - Nielsen, Christina Wøhlk
AU - Frydenvang, Karla Andrea
AU - Jensen, Anders Asbjørn
AU - Bunch, Lennart
PY - 2010/10/14
Y1 - 2010/10/14
N2 - 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.
AB - 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.
KW - Former Faculty of Pharmaceutical Sciences
U2 - 10.1021/jm1009154
DO - 10.1021/jm1009154
M3 - Journal article
C2 - 20857912
SN - 0022-2623
VL - 53
SP - 7180
EP - 7191
JO - Journal of Medicinal Chemistry
JF - Journal of Medicinal Chemistry
IS - 19
ER -