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. Author manuscript; available in PMC: 2014 Aug 8.
Published in final edited form as: J Med Chem. 2013 Jul 18;56(15):6216–6233. doi: 10.1021/jm400664x

Scheme 2a.

Scheme 2a

aReagents and conditions:

(a) TFA, CH2Cl2, rt, 4 h; (b) 1,4-dihydronaphthalene oxide, NEt3, EtOH, 75 °C, 36 h; (c) TBDMSCI, imidazole, CH2Cl2, rt, overnight; (d) n-BuLi, THF, -78 °C, 4h; (e) 12N HCl, THF, rt.