5VP1:
reference: Discovery of a Novel Series of Pyrazolo[1,5-a]pyrimidine-Based Phosphodiesterase 2A Inhibitors Structurally Different from N-((1S)-1-(3-Fluoro-4-(trifluoromethoxy)phenyl)-2-methoxyethyl)-7-methoxy-2-oxo-2 ,3-dihydropyrido[2,3-b]pyrazine-4(1H)-carboxamide (TAK-915), for the Treatment of Cognitive Disorders., Mikami S, Kawasaki M, Ikeda S, Negoro N, Nakamura S, Nomura I, Ashizawa T, Kokubo H, Hoffman ID, Zou H, Oki H, Uchiyama N, Hiura Y, Miyamoto M, Itou Y, Nakashima M, Iwashita H, Taniguchi T, Chem Pharm Bull (Tokyo). 2017;65(11):1058-1077. doi: 10.1248/cpb.c17-00564. PMID: 29093293

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