Multi-step reaction with 27 steps
1: NaBH4 / ethanol
2: 95 percent / pyridine
3: 74 percent / 0.8percent aq. H2SO4 / dioxane; methanol / 23 h / Ambient temperature
4: 94 percent / CBr4, PPh3 / tetrahydrofuran / 11 h / Ambient temperature
5: 96 percent / NaN3 / dimethylformamide / 8 h / 45 °C
6: H2 / Raney nickel / methanol / 24 h / Ambient temperature
7: NaOAc / ethanol / 15 h / Heating
8: Na2CO3 / acetone; H2O / 2 h / 0 °C
9: 99 percent / 2,4,5-triiodoimidazole, PPh3 / toluene / 4 h / Heating
10: 97 percent / Bu3SnH, AIBN / benzene / 3 h / Heating
11: 94 percent / HCl / diethyl ether / 15 h / Ambient temperature
12: 1) KH / 1) DMF, RT, 30 min
13: 86 percent / 50percent aq. TFA / 5 h / 50 °C
14: 1) n-BuLi / 1) THF, hexane, RT, 2) THF, 45 deg C, 5 h
15: 1) disiamylborane, 2) 2N NaOH, 30percent H2O2 / 1) THF, 3 h, 2) RT, 8 h
16: NEt3, 4-dimethylaminopyridine / CH2Cl2 / 18 h / Ambient temperature
17: NEt3 / CH2Cl2 / 2 h
18: H2 / Raney nickel / methanol; ethyl acetate / 2 h / 2068.6 Torr
19: N,N-bis(2-oxo-3-oxazolidinyl)phosphinic chloride, NEt3 / CH2Cl2 / 0.5 h / -15 °C
20: H2 / Pd black / ethanol / 24 h / 2327.2 Torr / Ambient temperature
21: dimethylaminopyridine, dicyclohexylcarbodiimide, 10-camphorsulfonic acid / CH2Cl2 / 1) 0 deg C to RT, 2) RT, overnight
22: H2 / 10percent Pd-C / methanol; ethyl acetate / 5 h / 1810.02 Torr
23: BOP, i-Pr2NEt / CH2Cl2 / 1) 0 deg C, 30 min, 2) RT, 3 h
24: 99 percent / HOAc / tetrahydrofuran; H2O / 16 h
25: 1) DMSO, trifluoroacetic anhydride, 2) NEt3 / 1) CH2Cl2, -78 deg C, 2.5 h, 2) CH2Cl2, RT, 1 h
26: NaH2PO4, 1M KMnO4 / 2-methyl-propan-2-ol / 0 °C
27: trifluoroacetic acid / CH2Cl2 / 2 h / 0 °C
With
pyridine; hydrogenchloride; dmap; sodium hydroxide; sodium tetrahydroborate; potassium permanganate; sodium dihydrogenphosphate; 2,4,5-triiodoimidazole; n-butyllithium; sodium azide; 2,2'-azobis(isobutyronitrile); carbon tetrabromide; sulfuric acid; (1S)-10-camphorsulfonic acid; hydrogen; dihydrogen peroxide; tri-n-butyl-tin hydride; sodium acetate; bis-(2-oxo-3-oxazolidinyl)phosphoryl chloride; bis-(1,2-dimethylpropyl)borane; potassium hydride; sodium carbonate; (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; acetic acid; dimethyl sulfoxide; triethylamine; N-ethyl-N,N-diisopropylamine; dicyclohexyl-carbodiimide; triphenylphosphine; trifluoroacetic acid; trifluoroacetic anhydride;
palladium on activated charcoal; nickel; palladium;
In
tetrahydrofuran; 1,4-dioxane; methanol; diethyl ether; ethanol; dichloromethane; water; ethyl acetate; N,N-dimethyl-formamide; acetone; toluene; tert-butyl alcohol; benzene;
DOI:10.1016/S0040-4020(01)80323-9