Multi-step reaction with 32 steps
1.1: n-BuLi / tetrahydrofuran; hexane / 0.5 h / -20 °C
1.2: tetrahydrofuran; hexane / 1.17 h / -20 - 0 °C
2.1: 122.7 mg / tetra-butylammonium fluoride / tetrahydrofuran / 1.5 h / 20 °C
3.1: N-methylmorpholine / CH2Cl2 / 20 °C
4.1: 12.43 g / NaHCO3 / acetonitrile; H2O / 20 °C
5.1: 70 percent / SmI2; methanol / tetrahydrofuran / 0.08 h / 20 °C
6.1: DIBALH / CH2Cl2; hexane / 1 h / -78 °C
7.1: 5.93 g / toluene / 20 - 80 °C
8.1: 100 percent / 2,6-lutidine / CH2Cl2 / 0.5 h / 0 °C
9.1: 100 percent / DIBALH / CH2Cl2; hexane / 0.5 h / -78 °C
10.1: (-)-diethyl tartrate; Ti(Oi-Pr)4; 4 Angstroem molecular sieves / CH2Cl2 / 0.5 h / -20 °C
10.2: 97 percent / t-BuOOH / CH2Cl2; 2,2,4-trimethyl-pentane / -20 °C
11.1: SO3*pyridine; Et3N / dimethylsulfoxide; CH2Cl2 / 0.5 h / 0 °C
12.1: NaHMDS / tetrahydrofuran / 1 h / 0 °C
12.2: 122.2 mg / tetrahydrofuran / 0.5 h / 0 °C
13.1: tetra-n-butylammonium fluoride / tetrahydrofuran / 0.83 h / 20 °C
14.1: 3.00 g / pyridinium p-toluenesulfonate / CH2Cl2 / 1.5 h / 20 °C
15.1: 2,6-lutidine / CH2Cl2 / 0.75 h / 0 °C
16.1: 3.68 g / EtSH; Zn(OTf)2; NaHCO3 / CH2Cl2 / 48 h / 20 °C
17.1: 92 percent / piridinium p-toluenesulfonate / CH2Cl2 / 1.33 h / 20 °C
18.1: 9-BBN-H / tetrahydrofuran / 20 °C
18.2: aq. NaHCO3; aq. H2O2 / tetrahydrofuran / 1.5 h / 20 °C
19.1: SO3*pyridine; Et3N / dimethylsulfoxide; CH2Cl2 / 0.83 h / 0 °C
20.1: toluene; diethyl ether / 0.5 h / -78 °C
21.1: 2.38 g / tetra-n-propylammonium perruthenate; N-methylmorpholine-N-oxide; 4 Angstroem molecular sieves / CH2Cl2 / 2 h / 20 °C
22.1: tetra-n-bitylammonium fluoride / tetrahydrofuran / 1.17 h / 20 °C
23.1: 2.03 g / N-methylmorpholine / CH2Cl2 / 20 °C
24.1: 87 percent / SmI2; methanol / tetrahydrofuran / 0.25 h / 0 °C
25.1: 96 percent / 2,6-lutidine / CH2Cl2 / 1 h / 0 °C
26.1: DIBALH / CH2Cl2; hexane / 0.17 h / -78 °C
27.1: 2.06 g / toluene / 20 °C
28.1: 93 percent / tetra-n-butylammonium fluoride; acetic acid / tetrahydrofuran / 5 h / 20 °C
29.1: H2 / Pd/C / methanol; tetrahydrofuran / 20 °C
30.1: 2,4,6-trichlorobenzoyl chloride; Et3N / tetrahydrofuran; toluene / 0.5 h / 20 °C
30.2: 204.0 mg / DMAP / toluene / 1 h / Heating
31.1: 100 percent / HMPA; KHMDS / tetrahydrofuran; toluene / 0.5 h / -78 °C
32.1: 9-BBN / tetrahydrofuran / 2 h / 20 °C
32.2: 87 percent / aq. Cs2CO3 / PdCl2(dppf)*CH2Cl2 / tetrahydrofuran; dimethylformamide / 21.5 h / 50 °C
With
4-methyl-morpholine; 2,6-dimethylpyridine; titanium(IV) isopropylate; methanol; N,N,N,N,N,N-hexamethylphosphoric triamide; 9-borabicyclo[3.3.1]nonane dimer; n-butyllithium; samarium diiodide; tetrapropylammonium perruthennate; pyridine-SO3 complex; 4 A molecular sieve; 2,4,6-trichlorobenzoyl chloride; tetrabutyl ammonium fluoride; hydrogen; sodium hexamethyldisilazane; pyridinium p-toluenesulfonate; potassium hexamethylsilazane; zinc trifluoromethanesulfonate; diisobutylaluminium hydride; sodium hydrogencarbonate; acetic acid; 4-methylmorpholine N-oxide; (-)-diethyl tartrate; triethylamine; ethanethiol;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; diethyl ether; hexane; dichloromethane; water; dimethyl sulfoxide; toluene; acetonitrile;
7.1: Wittig reaction / 10.1: Sharpless asymmetric epoxidation / 12.1: Wittig methylenation / 27.1: Wittig reaction / 30.1: Yamaguchi lactonization / 32.2: Suzuki-Miyaura coupling;
DOI:10.1021/ja028167a