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Product derivatisation. A) ortho‐Nosyl removal. B) Methyl carbamate removal. C) C2 group derivatisation. i) Thioglycolic acid (2.0 equiv), LiOH (4.0 equiv), DMF, rt; ii) TMS‐I (3.0 equiv), CHCl3, 55 °C; iii) a) RuCl3 (5 mol %), NaIO4, Na2HPO4:MeCN:CCl4; b) TMS‐CHN2, MeOH:PhMe; iv) O3, CH2Cl2/MeOH, −78 °C, NaBH4, −78 °C; v) BF3 ⋅ 2AcOH, CH2Cl2, 40 °C; KF (3.0 equiv), H2O2, NaHCO3, THF/MeOH, 70 °C.
