1: 95 percent / Pd(OAc)2; dppp; KOAc / 20 h / 110 °C 2: 82 percent / H2 / Ru-Alox / ethyl acetate / 24 h / 60 °C 3: 97 percent / TMSCl; NaI / acetonitrile / 40 °C 4: pig liver esterase / 35 °C / pH 8.0 5: 81 percent / DPPA; Et3N / CH2Cl2 / 40 °C 6: DMAP / 20 °C 7: NaH / toluene / Heating 8: pyridine / CH2Cl2 / -10 °C 9: NaN3 / acetone; H2O / 20 °C 10: H2 / Ra-Co 11: Et3N 12: HBr; AcOH View Scheme