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. Author manuscript; available in PMC: 2024 Jan 17.
Published in final edited form as: J Med Chem. 2002 Aug 1;45(16):3440–3450. doi: 10.1021/jm011093d

Scheme 2.

Scheme 2.

Synthesis of Imidazo[2,1-i]purinone Derivatives and Ring-Enlarged Analoguesa

a Reagents: (i) P2S5, pyridine, 8 h, Δ. (ii) MeI, NaOH/EtOH, 1 h, room temperature. (iii) Amino alcohol, DMSO, 1 h, 150 °C. (iv) SOCl2, 1 h Δ.