Multi-step reaction with 11 steps
1.1: 43 percent / K2CO3 / acetonitrile / 48 h / 20 °C
2.1: 51 percent / NEt3; (dimethylamino)pyridine / dimethylformamide
3.1: H2 / 10percent Pd/C / methanol / 3 h / 1034.32 Torr
4.1: NaHCO3 / tetrahydrofuran / 0 - 20 °C
5.1: lithium bis(trimethylsilyl)amide / tetrahydrofuran / 0.75 h / -78 °C
5.2: tetrahydrofuran / -78 - 20 °C
6.1: NEt3 / CH2Cl2 / 4 h / 20 °C
7.1: NaN3 / dimethylformamide / 65 °C
8.1: triphenylphosphine; water / tetrahydrofuran / 20 - 65 °C
9.1: pyridine / CH2Cl2 / 20 °C
10.1: 83 percent / trifluoroacetic acid / CH2Cl2 / 3 h / 0 - 20 °C
11.1: 97 percent / NEt3 / CH2Cl2 / 4 h
With
pyridine; dmap; sodium azide; water; hydrogen; sodium hydrogencarbonate; potassium carbonate; triethylamine; triphenylphosphine; trifluoroacetic acid; lithium hexamethyldisilazane;
10percent Pd/C;
In
tetrahydrofuran; methanol; dichloromethane; N,N-dimethyl-formamide; acetonitrile;
1.1: Substitution / 2.1: Acylation / 3.1: Reduction / 4.1: Acylation / 5.1: Metallation / 5.2: Ring cleavage / 6.1: mesylation / 7.1: Substitution / 8.1: Reduction / 9.1: Acetylation / 10.1: acidolysis / 11.1: Acylation;
DOI:10.1021/jm990373e