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. Author manuscript; available in PMC: 2016 Nov 15.
Published in final edited form as: Bioorg Med Chem. 2015 Oct 11;23(22):7119–7130. doi: 10.1016/j.bmc.2015.09.050

Scheme 3.

Scheme 3

a) para-Aminobenyl alcohol, HATU, DIEA, DMF; b) 30% piperidine in DMF; c) Fmoc-Phe, HATU, DIEA, DMF; d) para-nitrophenyl chloroformate, pyridine, DCM; e) DIEA, DMF; f) 30% piperidine in DMF; g) Mtt-S-dPEG8-COOH, HATU, DIEA, DMF; h) 0.5% TFA, 5% TIS in DCM.