Réaction #1884979

Équation de réaction

[18-(tert-butyl-dimethylsilanyloxy)-4-cyclopropanesulfonylaminocarbonyl-2,15-dioxo-3,16-diaza-tricyclo[14.3.0.04,6]nonadec-7-en-14-yl]-carbamic acid tert-butyl ester

tetrabutylammonium floride

→

(4-cyclopropanesulfonylaminocarbonyl-18-hydroxy-2,15-dioxo-3,16-diaza-tricyclo[14.3.0.04,6]nonadec-7-en-14-yl)-carbamic acid tert-butyl ester

Rendement 73.0%

Solvants

THF

Conditions de réaction

Traitement

1. 1
   Autrethe THF was removed by rotary evaporation
2. 2
   AutreThe residue was partitioned between ethyl acetate and water
3. 3
   SéchageThe organic phase was dried (MgSO4)
4. 4
   Concentrationconcentrated in vacuo
5. 5
   Autreto give the crude product
6. 6
   AutreIt was then purified
7. 7
   Autreby triturating with hexane

Mode opératoire

To a mixture of [18-(tert-butyl-dimethylsilanyloxy)-4-cyclopropanesulfonylaminocarbonyl-2,15-dioxo-3,16-diaza-tricyclo[14.3.0.04,6]nonadec-7-en-14-yl]-carbamic acid tert-butyl ester (330 mg, 0.48 mmoL) in 25 mL of THF was added tetrabutylammonium floride (150 mg, 0.54 mmoL). The reaction mixture was stirred at rt for 18 h, and then the THF was removed by rotary evaporation. The residue was partitioned between ethyl acetate and water. The organic phase was dried (MgSO4) and concentrated in vacuo to give the crude product. It was then purified by triturating with hexane to yield 200 mg (73%) of (4-cyclopropanesulfonylaminocarbonyl-18-hydroxy-2,15-dioxo-3,16-diaza-tricyclo[14.3.0.04,6]nonadec-7-en-14-yl)-carbamic acid tert-butyl ester, Example 19, as a white solid. 1H NMR (500 MHz, CD3Cl) δ 1.87-1.64 (m, 21 H), 1.70-1.98 (m, 3 H), 2.15-2.56 (m, 5 H), 2.85-2.94 (m, 1 H), 3.71 (d, J=13.91 Hz, 1 H), 4.10-4.26 (m, 2 H), 4.51 (t, J=7.87 Hz, 1 H), 4.62 (s, 1 H), 4.98 (m, 1 H), 5.06 (d, J=8.78 Hz, I H), 5.64-5.71 (m, 1 H), 6.72 (s, 1 H), 10.24 (s, 1 H); MS m/z 569 (M++1).

Source