1.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.5 h / 0 - 20 °C 2.1: Dess-Martin periodane / dichloromethane / 0.5 h / 0 - 20 °C / |Inert atmosphere 3.1: tetrahydrofuran / 1 h / -78 °C / |Inert atmosphere 4.1: 4-methylmorpholine N-oxide; osmium(VIII) oxide / water; acetone / 3 h / 20 °C 5.1: trifluoroacetic acid / dichloromethane / 20 °C 6.1: triphenylphosphine; pyridine; diethylazodicarboxylate / 0 °C 7.1: hydrogen; palladium dichloride / methanol / 1 h / 20 °C / 760.05 Torr 7.2: Amberlyte IRA-400 basic ion-exchange resin View Scheme