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. Author manuscript; available in PMC: 2013 Sep 13.
Published in final edited form as: J Med Chem. 2012 Aug 21;55(17):7425–7436. doi: 10.1021/jm300351w

Scheme 1.

Scheme 1

Synthetic Strategy for Inhibitors 4–5 and 7a

aReagent and conditions: (i) RCONH2 (compounds 4–5) and RNH2 (compound 7), Pd(OAc)2, BINAP NaOtBu, anhydrous toluene, 24h reflux, yield 40–50 %