反应详情

To a solution of the product of Example 5 Step A (0.14 mmol, 64 mg), 1H-tetraazol-5-amine monohydrate (0.28 mmol, 29 mg), HOBt (0.35 mmol, 53 mg) and EDC (0.56 mmol, 108 mg) in 1 mL of DMF was added DIEA (0.7 mmol, 122 μL). The reaction was allowed to stand at ambient temperature for 21 h, then concentrated under reduced pressure. The residue was taken up in ca. 2:1 dioxane/H2O and acidified with TFA, then purified by reverse-phase chromatography (Condition A). The product was lyophilized, affording a white solid. 1H NMR (500 MHz, CD3OD): δ 8.01 (d, 2H), 7.52-7.62 (overlapping m, 3H), 7.35-7.50 (overlapping m, 3H), 3.87 (s, 3H), 3.76 (m, 1H), 2.16 (m, 2H), 1.99 (m, 2H), 1.84 (m, 2H), 1.30 (m, 2H), 1.14 (m, 1H), 0.92 (s, 9H). MS (ESI): m/z 487 (M+H). HPLC A: 1.97 min.

1. concentrationconcentrated under reduced pressure
2. custompurified by reverse-phase chromatography (Condition A)
3. customaffording a white solid
4. custom1.97 min.