1: NaOAc / acetic acid / 7 h / Heating 2: LiN3 / dimethylformamide / 2.5 h / 130 °C 3: H2 / Pd-C / ethanol / 16 h / 25 °C / 2327.2 Torr 4: (i) aq. Ba(OH)2, (ii) /BRN= 1098367/, (iii) /BRN= 1098229/, H2SO4 5: LiBH4 / tetrahydrofuran / 3.5 h / Heating 6: HBr / acetic acid / 0.5 h / 100 °C 7: (i) Na, (ii) /BRN= 4047078/, (iii) aq. Ba(OH)2, MeOH View Scheme

1: NaOAc / acetic acid / 7 h / Heating 2: LiN3 / dimethylformamide / 2.5 h / 130 °C 3: H2 / Pd-C / ethanol / 16 h / 25 °C / 2327.2 Torr 4: (i) aq. Ba(OH)2, (ii) /BRN= 1098367/, (iii) /BRN= 1098229/, H2SO4 5: LiBH4 / tetrahydrofuran / 3.5 h / Heating 6: HBr / acetic acid / 0.5 h / 100 °C 7: (i) Na, (ii) /BRN= 4047078/, (iii) aq. Ba(OH)2, MeOH 8: aq. NaOH / 0.5 h / 180 °C View Scheme