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. Author manuscript; available in PMC: 2012 May 15.
Published in final edited form as: Bioorg Med Chem Lett. 2011 Mar 21;21(10):2980–2985. doi: 10.1016/j.bmcl.2011.03.048

Scheme 1.

Scheme 1

Reagents and conditions: (a) H2, Pd/C, EtOH; (b) ethyl acetimidate hydrochloride, EtOH; (c) 2N NaOH, MeOH; (d) 2-methyl-4-aminoquinoline, PO(OPh)2N3, Et3N, toluene, DMF.