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. Author manuscript; available in PMC: 2023 Jan 19.
Published in final edited form as: Eur J Med Chem. 2019 Mar 9;170:276–289. doi: 10.1016/j.ejmech.2019.03.015

Scheme 9.

Scheme 9.

Synthesis of compounds 25a and 25b. Reagents and conditions: (a) (diacetoxyiodo)benzene, KOH, MeOH, rt; (b) 1, NH4OAc, O2, EtOH, 65 °C, 16 % for 25a, 43 % for 25b.