SCHEME 3.
Synthesis of IMTi-1 analogs 1p-r. Key: i) Pd2(dba)3, XanthPhos, Cs2CO3, 1,4-Dioxane, microwave, 100°C; 4M HCl in dioxane, EtOAc, RT, 2 h ii) PyBOP, DIPEA, DMF, RT, 16 h iii) Pd(PPh3)4, aq. K2CO3, 1,4-Dioxane, microwave, 100°C, 2 h.
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