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. Author manuscript; available in PMC: 2011 Jun 20.
Published in final edited form as: Bioorg Med Chem Lett. 2010 Jun 15;20(12):3491–3494.

Scheme 3.

Scheme 3

Reagents and conditions: (a) InCl3, AcOH, MW at 230 °C; (b) SeO2, 1,4-dioxane, 80 °C; (c) HC≡CCH2NHBoc, n-BuLi, THF, −78 °C; (d) Pd/C, Et3SiH; (e) 4 N HCl in 1,4-dioxane, MeOH, rt.