Identification of Novel
Adenosine A<sub>2A</sub> Receptor
Antagonists by Virtual Screening
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Abstract
Virtual screening was performed against experimentally
enabled
homology models of the adenosine A<sub>2A</sub> receptor, identifying
a diverse range of ligand efficient antagonists (hit rate 9%). By
use of ligand docking and Biophysical Mapping (BPM), hits <b>1</b> and <b>5</b> were optimized to potent and selective lead molecules
(<b>11</b>–<b>13</b> from <b>5</b>, p<i>K</i><sub>I</sub> = 7.5–8.5, 13- to >100-fold selective
versus adenosine A<sub>1</sub>; <b>14</b>–<b>16</b> from <b>1</b>, p<i>K</i><sub>I</sub> = 7.9–9.0,
19- to 59-fold selective)