Multi-step reaction with 13 steps
1.1: 97 percent / 9-BBN / tetrahydrofuran / 16 h / 20 °C
2.1: 1.40 g / (COCl)2; DMSO; Et3N / CH2Cl2 / -78 - 20 °C
3.1: 2.37 g / n-BuLi / tetrahydrofuran; hexane / 13 h / 20 °C
4.1: 2.38 g / H2 / Pd-C / ethanol / 4 h
5.1: Et2O*BF3 / acetic anhydride / 0.5 h / -25 °C
6.1: K2CO3 / methanol / 3.5 h / 20 °C
7.1: 2.61 g / NaBH4 / methanol / 2 h / 20 °C
8.1: 100 percent / 2,6-lutidine / CH2Cl2 / 0.5 h / 0 °C
9.1: 95 percent / (COCl)2; DMSO; Et3N / CH2Cl2 / -78 - 20 °C
10.1: NaH / tetrahydrofuran
10.2: DIBAL-H / CH2Cl2; tetrahydrofuran
11.1: 20 percent / Ti(O-iPr)4; D-(-)-DET; t-butylhydroperoxide / CH2Cl2
12.1: 87 percent / CuCN / diethyl ether / 8 h / 0 °C
13.1: 86 percent / 4-(dimethylamino)pyridine / pyridine / 18 h / 75 °C
With
2,6-dimethylpyridine; titanium(IV) isopropylate; tert.-butylhydroperoxide; dmap; sodium tetrahydroborate; 9-borabicyclo[3.3.1]nonane dimer; n-butyllithium; oxalyl dichloride; diethyl (2S,3S)-tartrate; boron trifluoride diethyl etherate; hydrogen; sodium hydride; potassium carbonate; dimethyl sulfoxide; triethylamine;
palladium on activated charcoal;
In
tetrahydrofuran; pyridine; methanol; diethyl ether; ethanol; hexane; dichloromethane; acetic anhydride;
3.1: Wittig reaction / 9.1: Swern oxidation;
DOI:10.1246/bcsj.79.468