反应详情

Triethylamine (1.2 g, 11.4 mmol) was added in a single portion to a slurry of 1-(2-aminoethyl)-2-(ethoxymethyl)-1H-imidazo[4,5-c]quinolin-4-amine hydrochloride (3.39 g, 10.53 mmol) in chloroform (150 mL). The reaction mixture became clear. N-hydroxysuccinimidobiotin (3.0 g, 8.79 mmol) was then slowly added. After 2 hours the turbid reaction mixture was heated to reflux. The reaction mixture was maintained at reflux overnight and became clear. The reaction mixture was allowed to cool to ambient temperature and then it was quenched with water. The layers were separated. The organic layer was dried over magnesium sulfate and then concentrated to provide an off-white solid. This material was recrystallized from 8:2 ethanol:water to provide a white solid. A portion of this material was purified by prep HPLC eluting with water/acetonitrile/trifluoroacetic acid to provide 0.6 g of N1-[2-(4-amino-2-(ethoxymethyl)-1H-imidazo[4,5-c]quinolin-1-yl)ethyl]-5-(2-oxoperhydrothieno[3,4-d]imidazol-4-yl)pentanamide as the ditrifluoroacetate salt, m.p. 171-175° C. Analysis: Calculated for: C25H33N7O3S.2 C2HF3O2: %C, 47.09; %H, 4.77; %N, 13.26; Found: %C, 47.06; %H, 5.17; %N, 13.31.

1. customAfter 2 hours the turbid reaction mixture
2. temperaturewas heated to reflux
3. temperatureThe reaction mixture was maintained
4. temperatureat reflux overnight
5. customit was quenched with water
6. customThe layers were separated
7. dry with materialThe organic layer was dried over magnesium sulfate
8. concentrationconcentrated
9. customto provide an off-white solid
10. customThis material was recrystallized from 8:2 ethanol
11. customwater to provide a white solid
12. customA portion of this material was purified by prep HPLC
13. washeluting with water/acetonitrile/trifluoroacetic acid