1: 90 percent / 2,6-lutidine / CH2Cl2 / 0.75 h / Ambient temperature 2: 80 percent / SnCl4 / diethyl ether / 3 h / -85 °C 3: 92 percent / H2, AcONa / 10percent Pd/C / tetrahydrofuran / 24 h / Ambient temperature 4: 80percent aq. acetic acid / 8 h / 50 °C 5: aq. NaIO4, SiO2 / CH2Cl2 / 0.25 h 6: 1.8 g / NaBH4 / methanol / 2 h / -30 - 0 °C View Scheme