反应详情

85 mg (0.22 mmol) of 4-[3-(5-tert-butyl-3-methanesulfonylamino-2-methoxy-phenyl)-ureido]-naphthalene-1-carboxylic acid (Example 17) was dissolved in 1 mL of DMF. To this clear solution was added sequentially, 92 mg (0.294 mmol) of TBTU, and 82 microL (0.59 mmol) of triethylamine. The clear yellow solution was stirred for 5 min, then 33 mg (0.33 mmol) of 4-hydroxypiperidine was added. The reaction was stirred overnight, then concentrated in vacuo. The resulting amber oil was extracted with EtOAc and water, brine, and then dried over magnesium sulfate. Concentration in vacuo provided an amber oil which was purified on silica gel, eluting with with 33% EtOAc-hexane to provide 57 mg (54%) of the title compound as a pale white solid.

1. additionTo this clear solution was added sequentially
2. stirringThe reaction was stirred overnight
3. concentrationconcentrated in vacuo
4. extractionThe resulting amber oil was extracted with EtOAc and water, brine
5. dry with materialdried over magnesium sulfate
6. concentrationConcentration in vacuo
7. customprovided an amber oil which
8. customwas purified on silica gel
9. washeluting with with 33% EtOAc-hexane