hydrogen; palladium dihydroxide in tetrahydrofuran; methanol 1.5 h;

1: 85 percent / PPh3 / Pd2(dba)3*CHCl3 / CH2Cl2 / 3 h / 0 °C 2: 73 percent / NaBH4 / CH2Cl2; methanol / 3 h / -78 °C 3: 96 percent / OsO4; NMO / acetone; 2-methyl-propan-2-ol; H2O / 3 h / 0 °C 4: 86 percent / DMAP; pyridine / CH2Cl2 / 0 °C 5: 86 percent / H2 / Pd/C / tetrahydrofuran; ethanol / -90 - 20 °C View Scheme

1: 85 percent / PPh3 / Pd2(dba)3*CHCl3 / CH2Cl2 / 3 h / 0 °C 2: 73 percent / NaBH4 / CH2Cl2; methanol / 3 h / -78 °C 3: 96 percent / OsO4; NMO / acetone; 2-methyl-propan-2-ol; H2O / 3 h / 0 °C 4: 86 percent / DMAP; pyridine / CH2Cl2 / 0 °C 5: 86 percent / H2 / Pd/C / tetrahydrofuran; ethanol / -90 - 20 °C View Scheme

1: 73 percent / NaBH4 / CH2Cl2; methanol / 3 h / -78 °C 2: 96 percent / OsO4; NMO / acetone; 2-methyl-propan-2-ol; H2O / 3 h / 0 °C 3: 86 percent / DMAP; pyridine / CH2Cl2 / 0 °C 4: 86 percent / H2 / Pd/C / tetrahydrofuran; ethanol / -90 - 20 °C View Scheme

1: 96 percent / OsO4; NMO / acetone; 2-methyl-propan-2-ol; H2O / 3 h / 0 °C 2: 86 percent / DMAP; pyridine / CH2Cl2 / 0 °C 3: 86 percent / H2 / Pd/C / tetrahydrofuran; ethanol / -90 - 20 °C View Scheme

1: 86 percent / DMAP; pyridine / CH2Cl2 / 0 °C 2: 86 percent / H2 / Pd/C / tetrahydrofuran; ethanol / -90 - 20 °C View Scheme

1: 92 percent / formic acid; Et3N / (R)-Ru(η6-mesitylene)-(S,S)-TsDPEN / CH2Cl2 / 24 h / 20 °C 2: 90 percent / NaHCO3; NaOAc*3H2O; NBS / tetrahydrofuran; H2O / 1 h / 0 °C 3: 60 percent / DMAP / CH2Cl2 / 12 h / -78 °C 4: 85 percent / PPh3 / Pd2(dba)3*CHCl3 / CH2Cl2 / 3 h / 0 °C 5: 73 percent / NaBH4 / CH2Cl2; methanol / 3 h / -78 °C 6: 96 percent / OsO4; NMO / acetone; 2-methyl-propan-2-ol; H2O / 3 h / 0 °C 7: 86 percent / DMAP; pyridine / CH2Cl2 / 0 °C 8: 86 percent / H2 / Pd/C / tetrahydrofuran; ethanol / -90 - 20 °C View Scheme

1.1: DMSO; 3 Angstroem molecular sieves / acetone; CH2Cl2 / -20 - 0 °C 1.2: 50 percent / TsOH*H2O / CH2Cl2 / 1 h / 20 °C 2.1: 85 percent / PPh3 / Pd2(dba)3*CHCl3 / CH2Cl2 / 3 h / 0 °C 3.1: 73 percent / NaBH4 / CH2Cl2; methanol / 3 h / -78 °C 4.1: 96 percent / OsO4; NMO / acetone; 2-methyl-propan-2-ol; H2O / 3 h / 0 °C 5.1: 86 percent / DMAP; pyridine / CH2Cl2 / 0 °C 6.1: 86 percent / H2 / Pd/C / tetrahydrofuran; ethanol / -90 - 20 °C View Scheme

1.1: 75 percent / K2CO3 / acetone / 6 h / Heating 2.1: 76 percent / I2 / dimethylsulfoxide / 24 h / 110 °C 3.1: DMSO; 3 Angstroem molecular sieves / acetone; CH2Cl2 / -20 - 0 °C 3.2: 50 percent / TsOH*H2O / CH2Cl2 / 1 h / 20 °C 4.1: 85 percent / PPh3 / Pd2(dba)3*CHCl3 / CH2Cl2 / 3 h / 0 °C 5.1: 73 percent / NaBH4 / CH2Cl2; methanol / 3 h / -78 °C 6.1: 96 percent / OsO4; NMO / acetone; 2-methyl-propan-2-ol; H2O / 3 h / 0 °C 7.1: 86 percent / DMAP; pyridine / CH2Cl2 / 0 °C 8.1: 86 percent / H2 / Pd/C / tetrahydrofuran; ethanol / -90 - 20 °C View Scheme

1: 60 percent / DMAP / CH2Cl2 / 12 h / -78 °C 2: 85 percent / PPh3 / Pd2(dba)3*CHCl3 / CH2Cl2 / 3 h / 0 °C 3: 73 percent / NaBH4 / CH2Cl2; methanol / 3 h / -78 °C 4: 96 percent / OsO4; NMO / acetone; 2-methyl-propan-2-ol; H2O / 3 h / 0 °C 5: 86 percent / DMAP; pyridine / CH2Cl2 / 0 °C 6: 86 percent / H2 / Pd/C / tetrahydrofuran; ethanol / -90 - 20 °C View Scheme