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. 2022 May 12;13:863762. doi: 10.3389/fphar.2022.863762

FIGURE 1.

FIGURE 1

Development of new Cdk5 inhibitors. (A) Structures of four potential Cdk5 inhibitors: 25–106, 25–143, 25–107, and 25–132 (B). Synthesis of novel inhibitor, 25–106 (C). Regio-isomers are synthesized under strong or less basic conditions.