Multi-step reaction with 18 steps
1: 2) ethyl acetate, reflux
2: LiBH4 / diethyl ether
3: Zn(N3)2(py)2, Ph3P, DEAD, imid / toluene
4: H2 / 10percent Pd/C / ethanol
5: pyridine / CH2Cl2
6: TBAF / tetrahydrofuran / 0 to 25 deg C
7: (COCl)2, DMSO, DIPEA / CH2Cl2
8: BF3*Et2O / CH2Cl2 / -78 - -20 °C
9: DIPEA / CH2Cl2 / 0 °C
10: OsO4, NMO / acetone; butan-1-ol; H2O
11: NaIO4 / tetrahydrofuran; H2O
12: toluene / 70 °C
13: 85 percent / 8.8 eq. NaBH4 / methanol
14: DIPEA / CH2Cl2
15: LiBH4 / tetrahydrofuran / Heating
16: (COCl)2, DMSO, DIPEA / CH2Cl2
18: H2 / 10percent Pd-C / ethanol
With
pyridine; 1H-imidazole; sodium tetrahydroborate; sodium periodate; osmium(VIII) oxide; lithium borohydride; N-methyl-2-indolinone; oxalyl dichloride; Zn(N3)2/bis-pyridine complex; boron trifluoride diethyl etherate; tetrabutyl ammonium fluoride; hydrogen; dimethyl sulfoxide; N-ethyl-N,N-diisopropylamine; triphenylphosphine; diethylazodicarboxylate;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; diethyl ether; ethanol; dichloromethane; water; acetone; toluene; butan-1-ol;
DOI:10.1021/jo00062a003