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aReagents and conditions: (a) CHCl3; (b) (i)SOCl2, PhH, (ii) AlCl3, PhNO2; (c) H2, Pd-C, THF, MeOH, EtOAc; (d) (i) NaNO2, HCl, H2O, dioxane, (ii) CuI, KI, H2O; (e) NaN3, DMSO, 90 °C; (f) (i) P(OEt)3, PhH (ii) HCl, MeOH, (iii) K2CO3; (g) (i) CH2(O), MeOH, HOAc, (ii) NaCNBH3.
