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. Author manuscript; available in PMC: 2021 Nov 3.
Published in final edited form as: J Med Chem. 2021 May 4;64(9):5874–5885. doi: 10.1021/acs.jmedchem.1c00038

Scheme 2.

Scheme 2.

Synthesis of heMAMPa

aReagents and conditions: (a) K2CO3, CH3CN, reflux, 78%; (b) TFA/DCM, rt; (c) GdCl3, pH 5.5, rt, then 50 °C overnight; and (d) EDC.HCl, HOBt, NEt3, dimethyl sulfoxide (DMSO), 25%.