1: 95 percent / (i-Pr)2NEt / CH2Cl2 2: 91 percent / Zn; AcOH / methanol 3: 93 percent / NaHCO3 / diphenyl ether / 0.5 h / Heating 4: 100 percent / MeOH; HCl View Scheme

1: 97 percent / iPr2EtN / CH2Cl2 2: 79 percent / Zn, AcOH / ethanol 3: 86 percent / NaHCO3 / diphenyl ether / 0.5 h / 260 °C 4: Et3N, DMAP / CH2Cl2 / 0 °C 5: Bu3SnH, AIBN / benzene / 80 °C 6: 30percent H2O2, KHCO3 / methanol; tetrahydrofuran / Heating 7: 100 percent / imidazole / dimethylformamide 8: iPrEtN, DMAP / CH2Cl2 9: TBAF / tetrahydrofuran 10: SO3*Py, Et3N / dimethylsulfoxide 11: NaClO2, NaH2PO4*2H2O, 2-methyl-2-butene / 2-methyl-propan-2-ol; H2O 12: CH2Cl2 13: 98 percent / AcCl / methanol View Scheme

1: 97 percent / NaH; Bu4NI / tetrahydrofuran / 0.5 h / Heating 2: 98 percent / Zn; AcOH / methanol 3: 90 percent / NaHCO3 / diphenyl ether / 0.5 h / Heating 4: OsO4; NMO; H2O / tetrahydrofuran 5: (i-Pr)2NEt / CH2Cl2 6: 93 percent / H2 / Pd(OH)2 / methanol 7: 94 percent / toluene 8: 97 percent / (MeO)3P / Heating 9: 100 percent / MeOH; HCl View Scheme

1: 95 percent / (i-Pr)2NEt / CH2Cl2 2: 91 percent / Zn; AcOH / methanol 3: 93 percent / NaHCO3 / diphenyl ether / 0.5 h / Heating View Scheme

1: 97 percent / iPr2EtN / CH2Cl2 2: 79 percent / Zn, AcOH / ethanol 3: 86 percent / NaHCO3 / diphenyl ether / 0.5 h / 260 °C 4: Et3N, DMAP / CH2Cl2 / 0 °C 5: Bu3SnH, AIBN / benzene / 80 °C 6: 30percent H2O2, KHCO3 / methanol; tetrahydrofuran / Heating 7: 100 percent / imidazole / dimethylformamide 8: iPrEtN, DMAP / CH2Cl2 9: TBAF / tetrahydrofuran 10: SO3*Py, Et3N / dimethylsulfoxide 11: NaClO2, NaH2PO4*2H2O, 2-methyl-2-butene / 2-methyl-propan-2-ol; H2O 12: CH2Cl2 13: 98 percent / AcCl / methanol 14: 96 percent / aq. 1 M NaOH / tetrahydrofuran; H2O View Scheme