Multi-step reaction with 14 steps
1.1: NaBH4 / ethanol / 0.5 h
1.2: 382 mg / K2CO3 / methanol / 24 h / 20 °C
2.1: 90 percent / pyridine; 4-dimethylaminopyridine / CH2Cl2 / 0 - 20 °C
3.1: triethylamine / tetrahydrofuran / 20 °C
4.1: 1.96 g / NaN3 / dimethylformamide / 5 h / 60 °C
5.1: H2 / PtO2 / ethyl acetate
6.1: 2.66 g / triethylamine / CH2Cl2 / 20 °C
7.1: 100 percent / H2 / Pd on carbon / ethanol
8.1: 93 percent / oxalyl chloride; methyl sulfoxide; Et3N / CH2Cl2 / 1.42 h / -78 - 20 °C
9.1: potassium hexamethyldisilylamide / tetrahydrofuran / 1 h / -78 °C / cooling
9.2: 76 percent / tetrahydrofuran / -78 - 20 °C
10.1: 91 percent / LiOH*H2O / tetrahydrofuran; H2O / 6.5 h / 70 °C
11.1: 79 percent / triethylamine; NH4Cl; diphenylphosphorylazide / dimethylformamide / -16 °C
12.1: 60 percent / pyridine; HF / 3 h
13.1: 37 percent / 2,2,6,6-tetramethyl-1-piperidinyloxy; NaClO2; NaClO / acetonitrile; aq. phosphate buffer / 35 °C / pH 6.85
14.1: 61 percent / diisopropylethylamine; 1-hydroxybenzotriazole; 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride / CH2Cl2 / 16 h / 0 - 20 °C
With
pyridine; dmap; 2,2,6,6-tetramethyl-piperidine-N-oxyl; lithium hydroxide; sodium hypochlorite; sodium chlorite; sodium tetrahydroborate; sodium azide; oxalyl dichloride; diphenylphosphoranyl azide; hydrogen fluoride; hydrogen; potassium hexamethylsilazane; ammonium chloride; benzotriazol-1-ol; dimethyl sulfoxide; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; N-ethyl-N,N-diisopropylamine;
platinum(IV) oxide; palladium on activated charcoal;
In
tetrahydrofuran; phosphate buffer; ethanol; dichloromethane; water; ethyl acetate; N,N-dimethyl-formamide; acetonitrile;
8.1: Swern oxidation / 9.1: Wittig olefination;
DOI:10.1002/anie.200602033