Reaktion #58092

Reaktionsgleichung

3-(1-{3-[2-(6-benzyloxy-3-oxo-3,4-dihydro-2H-benzo[1,4]oxazin-8-yl)-2-hydroxy-ethylamino]-3-methyl-butyl}-5-methyl-1H-[1,2,4]triazol-3-yl)-benzoic acid trifluoroacetate

hydrogen

→

1-{3-[2-hydroxy-2-(6-hydroxy-3-oxo-3,4-dihydro-2H-benzo[1,4]oxazin-8-yl)-ethylamino]-3-methyl-butyl}-5-methyl-1H-[1,2,4]triazol-3-yl-benzoic acid

Lösungsmittel

methanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   Filtrationfiltered
2. 2
   Sonstigethe filtrate is evaporated down
3. 3
   Sonstigethe residue is purified by chromatography (reverse phase, acetonitrile/water gradient with 0.1% trifluoroacetic acid)

Vorschrift

250 mg (0.36 mmol) 3-(1-{3-[2-(6-benzyloxy-3-oxo-3,4-dihydro-2H-benzo[1,4]oxazin-8-yl)-2-hydroxy-ethylamino]-3-methyl-butyl}-5-methyl-1H-[1,2,4]triazol-3-yl)-benzoic acid trifluoroacetate are dissolved in 5 mL methanol and hydrogenated at ambient temperature and 2.5 bar hydrogen pressure in the presence of palladium on charcoal (10%). The catalyst is suction filtered, the filtrate is evaporated down and the residue is purified by chromatography (reverse phase, acetonitrile/water gradient with 0.1% trifluoroacetic acid). Yellow solid. Yield: 62 mg (28%, trifluoroacetate); mass spectroscopy [M+H]+=496.

Quelle