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Synthesis of 2 and 3–9. Reagents and conditions: (a) NaBH4, Pd/C, MeOH, 30 min, at 5–10 °C; (i) K2CO3, dry acetone, reflux at 65 °C for 6 h.; (b) methyl iodide; (c) allyl bromide; (d) 2-methyl-1-propenyl bromide; (e) crotyl bromide; (f) prenyl bromide; (g) geranyl bromide; (h) farnesyl bromide.
