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. 2013 Sep 23;8(9):e75601. doi: 10.1371/journal.pone.0075601

Figure 4. Synthesis and SAR analysis of 1-NA-PP1 analogs.

Figure 4

A. 4-Zone model for 1-NA-PP1 analog synthesis. B. Synthesis of 1H-pyrazolo[3,4-d]pyrimidines 1.