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Synthesis of compound 32. Reagents and conditions: a) 1‐naphthalenemethanol, NaH, THF, RT, 6 h, 93.4 %; b) for boric acid: Pd(PPh3)4, Na2CO3, toluene/H2O, 14 h, for boronic acid pinacol cyclic ester: Pd(dppf)Cl2⋅CH2Cl2, Na2CO3, toluene/H2O, 14 h, 41.4–86.8 %.
