Reaktion #2021775

Reaktionsgleichung

compound 122

α-[[2-[4-[4-[4-[4-[[2-(2,4-difluorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy]phenyl]-1-piperazinyl]phenyl]-4,5-dihydro-5-oxo-1H-1,2,4-triazol-1-yl]-1-methylpropyl]amino]benzeneacetonitrile

hydrogen

→

2-[2[(2-amino-1-phenylethyl)amino]-1-methylpropyl]-4-[4-[4-[4-[[2-(2,4-difluorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy]phenyl]-1-piperazinyl]-phenyl]-2,4-dihydro-3H-1,2,4-triazol-3-one

Ausbeute 15.4%

Lösungsmittel

CH3OH NH3

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigethe filtrate was evaporated
2. 2
   SonstigeThe residue was triturated in DIPE and 2-propanol
3. 3
   Filtrationfiltered off
4. 4
   Sonstigedried
5. 5
   SonstigeThe residue was purified by HPLC (eluent: (ammonium acetate 0.5% in H2O/CH3CN 90/10)/CH3CN 90/10 to 0/100; column: HYPERPREP C18 BDS 8 μm)
6. 6
   SonstigeTwo pure fractions were collected
7. 7
   Sonstigetheir solvents were evaporated
8. 8
   SonstigeThe residue was triturated in DIPE
9. 9
   Filtrationfiltered off
10. 10
    Sonstigedried

Vorschrift

A mixture of compound 122 (0.003 mol) in CH3OH NH3 (200 ml) was hydrogenated overnight with Raney Nickel (1 g) as a catalyst. After uptake of hydrogen (2 equivalents), the catalyst was filtered off and the filtrate was evaporated. The residue was triturated in DIPE and 2-propanol, filtered off and dried. The residue was purified by HPLC (eluent: (ammonium acetate 0.5% in H2O/CH3CN 90/10)/CH3CN 90/10 to 0/100; column: HYPERPREP C18 BDS 8 μm). Two pure fractions were collected and their solvents were evaporated. The residue was triturated in DIPE, filtered off and dried, yielding 0.45 g [2S-[2α,4α[(S*,R*)(A)]]]-2-[2-[(2-amino-1-phenylethyl)amino]-1-methylpropyl]-4-[4-[4-[4-[[2-(2,4-difluorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy]phenyl]-1-piperazinyl]phenyl]-2,4-dihyro-3H-1,2,4-triazol-3-one (18.7%) (compound 174) and 0.37 g [2S-[2α,4α[(S*,R*)(B)]]]-2-[2[(2-amino-1-phenylethyl)amino]-1-methylpropyl]-4-[4-[4-[4-[[2-(2,4-difluorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy]phenyl]-1-piperazinyl]-phenyl]-2,4-dihydro-3H-1,2,4-triazol-3-one (15.4%) (compound 178).

Quelle