DC591017, a phosphodiesterase-4 (PDE4) inhibitor with robust anti-inflammation through regulating PKA-CREB signaling - Li, H; Li, J; Zhang, X; Feng, C; Fan, C; Yang, X; Zhang, R; Zhu, F; Zhou, Y; Xu, Y; Liu, H; Tang, W (Biochem Pharmacol, 2020)