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. Author manuscript; available in PMC: 2010 Jun 24.
Published in final edited form as: Bioorg Med Chem. 2009 Jul 5;17(17):6463–6480. doi: 10.1016/j.bmc.2009.05.085

Scheme 5.

Scheme 5

Reagents and conditions: (a) N-Boc-ethanolamine, PPh3, DIAD, THF, 0 °C to rt; (b) H2, 5% Pd/C, MeOH, rt; (c) MsCl, DIPEA, DCM, 0 °C to rt; (d) TFA, DCM, rt; (e) chloroacetyl chloride, Et3N, DCM, 0 °C to rt; (f) 65, Et3N THF, reflux.