[N+:1]([C:4]1[CH:9]=[C:8]([CH:10]2[O:15][CH2:14][CH2:13][N:12]([CH2:16][CH2:17][CH3:18])[CH2:11]2)[CH:7]=[CH:6][C:5]=1[OH:19])([O-])=O.C([O-])=O.[NH4+]>C(O)C.[Pd]>[NH2:1][C:4]1[CH:9]=[C:8]([CH:10]2[O:15][CH2:14][CH2:13][N:12]([CH2:16][CH2:17][CH3:18])[CH2:11]2)[CH:7]=[CH:6][C:5]=1[OH:19]To the nitro from example 36 (95 mg, 0.35 mmol) in ethanol (10 ml) was added 10% palladium on charcoal (50 mg) and ammonium formate (100 mg, XS). The reaction mixture was gently heated to 70° C. and held at this temperature for 1 hour before it was allowed to cool to room temperature. The reaction mixture was then filtered through arbacel and washed with ethanol (20 ml) then dichloromethane (20 ml). The organic washes were combined and concentrated in vacuo to give the title compound as a yellow solid (65 mg, 0.28 mmol, 78%). 1H NMR (CDCl3, 400 MHz) δ: 0.91 (t, 3H), 1.55 (m, 2H), 2.12 (t, 1H), 2.25 (dt, 1H), 2.40 (t, 2H), 2.81-2.92 (dd, 2H), 3.82 (t, 1H), 4.00 (d, 1H), 4.42 (d, 1H), 6.60 (m, 2H), 6.71 (s, 1H). LRMS: m/z 237 (M−H+).
Wird geladen…
