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. Author manuscript; available in PMC: 2010 Apr 22.
Published in final edited form as: J Am Chem Soc. 2009 Apr 22;131(15):5424–5431. doi: 10.1021/ja808704m

Figure 7.

Figure 7

Synthesis of EPO(78-166) glycopeptide 1.a

aKey: The protected amino acid residues are shown in italic. Reagents and conditions: (a) 1. TCEP·HCl, HOOBt, DIEA, DMSO, 2. Piperidine, DMSO, 59% for the first condensation; 52% for the second condensation; 50% for the third condensation.