反应详情

Dissolved 68 mg (4aS,5R,8S,8aR)-8-({[tert-butyl(diphenyl)silyl]oxy}methyl)-5-[(4-fluorophenyl)amino]hexahydro-2H-chromen-4a(5H)-ol in 4 mL tetrabutylammonium fluoride solution (2.0 M in THF) and stirred overnight at RT. Excess solvent was removed using a rotovap, then the residue was diluted with CH2Cl2, added to water, and extracted with CH2Cl2. The crude extract was dried over Na2SO4, filtered, concentrated, then purified on silica gel to provide the title compound. 1H NMR (500 MHz, CDCl3) δ=1.32-1.39 (m, 1H), 1.55-1.90 (m, 5H), 2.06-2.16 (m, 2H), 2.24-2.28 (m, 1H), 2.34-2.46 (m, 1H). 3.46 (s, 1H), 3.49-3.56 (m, 2H), 3.68-3.75 (m, 1H), 3.77-3.82 (m, 1H), 4.12 (dd, J1=11.4 Hz, J2=6.0 Hz, 1H), 4.64 (d, J=11.2 Hz), 6.50-6.56 (m, 2H), 6.85-6.90 (m, 2H) ppm.

1. customExcess solvent was removed
2. additionthe residue was diluted with CH2Cl2
3. additionadded to water
4. extractionextracted with CH2Cl2
5. extractionThe crude extract
6. dry with materialwas dried over Na2SO4
7. filtrationfiltered
8. concentrationconcentrated
9. custompurified on silica gel