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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 7.

Scheme 7

Reagents and Conditions: (a) (CH3)2NH, NaBH(OAc)3, HOAc, 4h, 98%; (b) CH3P(Ph)3Br, KOtBu 30 min, 69% (c)TFA, CH2Cl2; (d) 3-(furan-2-yl)benzoic acid, EDC, DIPEA, DMAP, THF 10–83% (2 steps).