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. Author manuscript; available in PMC: 2020 Jan 15.
Published in final edited form as: Bioorg Med Chem. 2018 Nov 14;27(2):255–264. doi: 10.1016/j.bmc.2018.11.022

Fig. 2.

Fig. 2.

Synthesis of ZJ-43. Reagents and conditions: (a) triphosgene, triethylamine, DCM, −78 °C to rt, 16 h, 62% yield; (b) H2, 5% Pd/C, EtOAc, 30 psi, 12 h, quantitative yield.