Design,synthesis of novel purin-6-one derivatives as phosphodiesterase 2 (PDE2) inhibitors: The neuroprotective and anxiolytic-like effects |
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| Authors: | Xian-Feng Huang Yi-Jing Cao Jing Zhen Da-Wei Zhang Ren Kong Wen-Tao Jiang Ying Xu Guo-Qiang Song Heng-Ming Ke Li Liu |
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| Affiliation: | 1. School of Pharmaceutical Engineering and Life Sciences, Changzhou University, Changzhou, Jiangsu 213164, PR China;2. Institute of Bioinformatics and Medical Engineering, School of Electrical and Information Engineering, Jiangsu University of Technology, Changzhou, Jiangsu 213001, PR China;3. Department of Biochemistry and Biophysics and Lineberger Comprehensive Cancer Center, The University of North Carolina, Chapel Hill, NC 27599-7260, USA;4. Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, The State University of New York at Buffalo, Buffalo, NY 14214, USA |
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| Abstract: | Phosphodiesterase 2 (PDE2) has received much attention for the potential treatment of the central nervous system (CNS) disorders. Herein, based on the existing PDE2 inhibitors and their binding modes, a series of purin-6-one derivatives were designed, synthesized and evaluated for PDE2 inhibitory activities, which led to the discovery of the best compounds 6p and 6s with significant inhibitory potency (IC50: 72 and 81?nM, respectively). Docking simulation was performed to insert compound 6s into the crystal structure of PDE2 at the active site to determine the binding mode. Furthermore, compound 6s significantly protected HT-22 cells against corticosterone-induced cytotoxicity and rescued corticosterone-induced decreases in cAMP and cGMP levels. It also produced anxiolytic-like effect in the elevated plus-maze test and exhibited favorable pharmacokinetic properties in vivo. These results might bring significant instruction for further development of potent PDE2 inhibitors. |
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| Keywords: | PDE2 inhibitors Purin-6-one Anxiolytic-like effects |
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