Multi-step reaction with 14 steps
1.1: 90 percent / AlMe3 / tetrahydrofuran; toluene / 2 h / -30 - 0 °C
2.1: TBAF/SiO2 / tetrahydrofuran / 3 h / 25 °C
3.1: 938 mg / 2,6-lutidine / CH2Cl2 / 0.25 h / 25 °C
4.1: DIBAL-H / tetrahydrofuran; toluene / 0.5 h / -78 °C
5.1: 1.76 g / CH2Cl2 / 15 h / 25 °C
6.1: nBu3SnH / [Pd(PPh3)2Cl2] / benzene / 0.17 h / 5 °C
6.2: 140 mg / I2 / CH2Cl2 / 0.08 h / 0 °C
7.1: CpZrHCl / tetrahydrofuran / 2 h / 50 °C
7.2: ZnCl2 / tetrahydrofuran / 0.08 h / 25 °C
7.3: 84 percent / [Pd(PPh3)4] / tetrahydrofuran / 2 h / 25 °C
8.1: 75 percent / PPTS; MeOH / 3 h / 40 °C
9.1: 95 percent / aq. NaIO4 / tetrahydrofuran / 2 h / 0 - 25 °C
10.1: 35 percent / CrCl2; NiCl2 / dimethylformamide / 2 h / 25 °C
11.1: 93 percent / Dess-Martin periodinane / CH2Cl2 / 2 h / 25 °C
12.1: CeCl3*7H2O; LiBH4 / tetrahydrofuran; methanol / 3 h / -78 - 25 °C
13.1: 85 percent / DMAP / CH2Cl2 / 3 h / 25 °C
14.1: 69 percent / DBAF / tetrahydrofuran / 2 h / 25 °C
With
2,6-dimethylpyridine; chromium dichloride; methanol; dmap; sodium periodate; lithium borohydride; cerium(III) chloride; CpZrHCl; tetrabutyl ammonium fluoride; trimethylaluminum; tri-n-butyl-tin hydride; pyridinium p-toluenesulfonate; silica gel; diisobutylaluminium hydride; Dess-Martin periodane; nickel dichloride;
bis-triphenylphosphine-palladium(II) chloride;
In
tetrahydrofuran; methanol; dichloromethane; N,N-dimethyl-formamide; toluene; benzene;
1.1: Substitution / 2.1: Desilylation / 3.1: Etherification / 4.1: Reduction / 5.1: Condensation / 6.1: Addition / 6.2: Substitution / 7.1: Addition / 7.2: Transmetallation / 7.3: Negishi coupling / 8.1: Methanolysis / 9.1: Oxidation / 10.1: Addition / 11.1: Oxidation / 12.1: Reduction / 13.1: Esterification / 14.1: Silyl ether cleavage, Ether cleavage;
DOI:10.1002/1521-3765(20000602)6:11<1987::AID-CHEM1987>3.0.CO;2-U