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Reagents and conditions: a) NiCl2/NaBH4, MeOH; b) Ac2O, 86% over 2 steps; c) TBAF, THF, −40 °C to rt, 81%; d) salicylchlorophosphite, pyridine, then 1M triethylammonium hydrogencarbonate buffer solution (TEAB): Batch 62% yield; MRT 76% yield. TDS: Thexyldimethylsilyl.
