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. Author manuscript; available in PMC: 2018 Apr 15.
Published in final edited form as: Bioorg Med Chem Lett. 2017 Mar 10;27(8):1744–1749. doi: 10.1016/j.bmcl.2017.02.070

Scheme 3.

Scheme 3

Reagents and Conditions: (a) 4-chloroaniline, EDC, DIPEA, DMAP, THF, 55–84%; (b) HCl in dioxane or TFA in CH2Cl2, 54–100%; (c) 3-(furan-2-yl)benzoic acid, EDC, DIPEA, DMAP, THF, 49–94%; (d) 10% Pd/C, H2, MeOH, 40%; (d) Ac2O, DMAP, THF or ClCO2Me, Et3N, CH2Cl2, 55%.