Ammonium formate → (S)-2-(3-amino-1H-1,2,4-triazol-5-yl)-1-(2-benzyl-4-(3-isopropoxy-4-methoxyphenyl)piperazin-1-yl)ethanone

Participants

Reaction Steps

A solution of 1-[2(S)benzyl-4-(3-isopropoxy-4-methoxy-phenyl)-piperazin-1-yl]-2-(5-nitro-1H-[1,2,4]triazol-3-yl)-ethanone (Example 248, Compound 336) in MeOH (10 mL) was treated with 10% Palladium on Carbon (200 mg, 0.66 mmol) and ammonium formate (50 mg, 1.66 mmol). The reaction mixture was heated at 65 C for 1 h after which time the reaction was cooled and filtered with the aid of MeOH (20 mL) and EtOAc (20 mL). The organic portion was dried over MgSO4, filtered, and evaporated to an oil which was purified by silica gel flash chromatography with 5% then 10% MeOH/EtOAc as eluant to afford product as an oil. 1H NMR (CDCl3) 12.00-11.90 (br, 1H), 7.39-7.25 (m, 2H), 7.24-7.20 (m, 3H), 6.79 (d, J=8, 1H), 6.50-6.43 (m, 1H), 6.37-6.34 (m, 1H), 6.00-5.90 (br, 2H), 4.50-433 (m, 2H), 3.64 (s, 3H), 3.54-3.33 (m, 4H). 3.22-3.09 (m, 3H), 3.00-2.92 (m, 1H), 2.74-2.60 (m, 1H), 2.55-2.37 (m, 3H), 1.19 (d, J=6.4, 6H). LC/MS (Method B) 3.66 min, [M+1]+ 465. Potency class A.

Provenance & Evidence