1: 94 percent / tetrabutylammonium fluoride (TBAF) / tetrahydrofuran / 13 h / 23 °C 2: SO3*pyridine, triethylamine / dimethylsulfoxide / 0.5 h / 23 °C 3: 1) NaH / 1) THF, 23 deg C, 30 min, 2) THF, 23 deg C, 40 min 4: 81 mg / NaBH4 / methanol / 0.67 h / -25 °C 5: 65percent aq. acetic acid / tetrahydrofuran / 2 h / 50 °C 6: 90 percent / imidazole / dimethylformamide / 1 h / 23 °C 7: 95 percent / H2 / napthalene*Cr(CO)3 / tetrahydrofuran / 23 h / 45 °C / 55163.1 Torr 8: 100 percent / tetrabutylammonium fluoride (TBAF) / tetrahydrofuran / 13 h / 23 °C 9: 100 percent / 10percent aq. NaOH / methanol / 13 h / 0 °C View Scheme

1: 94 percent / tetrabutylammonium fluoride (TBAF) / tetrahydrofuran / 13 h / 23 °C 2: SO3*pyridine, triethylamine / dimethylsulfoxide / 0.5 h / 23 °C 3: 1) NaH / 1) THF 4: NaBH4 / methanol / -25 °C 5: 65percent aq. acetic acid / tetrahydrofuran / 50 °C 6: 82 percent / imidazole / dimethylformamide / 23 °C 7: 33 percent / H2 / (methyl benzoate)*Cr(CO)3 / acetone / 15 h / 120 °C / 51485.6 Torr 8: 88 percent / tetrabutylammonium fluoride (TBAF) / tetrahydrofuran / 23 °C 9: 100 percent / 10percent aq. NaOH / methanol / 0 °C View Scheme

1: 94 percent / tetrabutylammonium fluoride (TBAF) / tetrahydrofuran / 13 h / 23 °C 2: SO3*pyridine, triethylamine / dimethylsulfoxide / 0.5 h / 23 °C 3: 1) NaH / 1) THF 4: NaBH4 / methanol / -25 °C 5: 65percent aq. acetic acid / tetrahydrofuran / 50 °C 6: 94 percent / imidazole / dimethylformamide / 23 °C 7: 100 percent / H2 / (methyl benzoate)*Cr(CO)3 / acetone / 15 h / 120 °C / 51485.6 Torr 8: 82 percent / tetrabutylammonium fluoride (TBAF) / tetrahydrofuran / 23 °C 9: 74 percent / 10percent aq. NaOH / methanol / 0 °C View Scheme