Pharmacophore modeling of human adenosine receptor A(₂A) antagonists.
Three-dimensional pharmacophore models of human adenosine receptor A(₂A) antagonists were developed based on 23 diverse compounds selected from a large number of A(₂A) antagonists. The best pharmacophore model, Hypo1, contained five features: one hydrogen bond donor , three hydrophobic points and one ring aromatic. Its correlation coefficient, root mean square deviation, and cost difference values were 0.955, 0.921 and 84.4, respectively, suggested that the Hypo1 model was reasonable and reliable. This model was validated by three methods: a test set of 106 diverse compounds, a simulated virtual screening, and superimposition with the crystal structure of A(₂A) receptor. The results showed that Hypo1 was not only in agreement with the A(₂A) crystal structure and literature reports, but also well identified active A(₂A) antagonists from the virtual database. This methodology provides helpful information and a robust tool for the discovery of potent A(₂A) antagonists.
Xu
Zhejun
Z
School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
Cheng
Feixiong
F
Da
Chenxiao
C
Liu
Guixia
G
Tang
Yun
Y
D058917:Adenosine A2 Receptor Antagonists / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology; D000465:Algorithms; D001665:Binding Sites; D020134:Catalytic Domain; D003198:Computer Simulation; D006801:Humans; D006860:Hydrogen Bonding; D057927:Hydrophobic and Hydrophilic Interactions; D008956:Models, Chemical; D008958:Models, Molecular; D015394:Molecular Structure; D043683:Receptors, Adenosine A2 / Q000737:chemistry*; D013329:Structure-Activity Relationship
D058917:Adenosine A2 Receptor Antagonists; D043683:Receptors, Adenosine A2