[CH3:1][C:2]1[C:7]([CH2:8][CH2:9][CH2:10][CH2:11][CH3:12])=[CH:6][N:5]=[C:4]([NH:13]C(=O)C(C)(C)C)[CH:3]=1.C(=O)([O-])[O-].[Na+].[Na+]>Cl>[CH2:8]([C:7]1[C:2]([CH3:1])=[CH:3][C:4]([NH2:13])=[N:5][CH:6]=1)[CH2:9][CH2:10][CH2:11][CH3:12]A suspension of 4-methyl-2-(trimethylacetyl)amino-5-(1-pentyl)-pyridine (233 mg, 0.89 mmol) in 2N hydrochloric acid (3 mL) was heated at 100° C. for 18 h. The solution was cooled to room temperature, made basic with 20% aqueous sodium carbonate and extracted with chloroform. The organic layer was dried (Na2SO4), and evaporated. The product was purified by silica gel column chromatography using 2% methanol/methylene chloride to give the title compound.
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