Triethylamine → 2-Methyl-2-[[4-(2-propan-2-yl-1,2,4-triazol-3-yl)-9-oxa-3,6,13-triazatricyclo[8.4.0.02,6]tetradeca-1(14),2,4,10,12-pentaen-12-yl]oxy]propanamide

To a solution of 2-[2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a,9-triaza-benzo[e]azulen-8-yloxy]-2-methyl-propionic acid (96 mg, 0.24 mmol) in DMF (3 mL) was added HATU (184 mg, 0.48 mmol), ammonium chloride (39 mg, 0.72 mmol) and triethyl amine (100 μL, 0.72 mmol) and the reaction mixture stirred at RT for 2 h. The reaction mixture was concentrated in vacuo, the residue dissolved in ethyl acetate (10 mL) and the mixture washed with water, extracting with ethyl acetate (3×10 mL). The combined organic extracts were washed with brine, dried (MgSO4) and concentrated in vacuo. The residue was subjected to reverse phase preparative HPLC (C-18, 10-90% MeCN in water 0.1% formic acid, 25 min gradient) to yield 429 as a white solid (38 mg, 38%). LCMS: RT=7.36 min, [M+H]+=398; 1H NMR (400 MHz, d6-DMSO) 8.99 (1H, s), 8.11 (1H, s), 7.87 (1H, s), 7.86 (1H, s), 7.16 (1H, s), 6.89 (1H, s), 6.37 (1H, s), 5.89 (1H, sept, J=6.6 Hz), 4.59-4.42 (4H, m), 1.54 (6H, s), 1.44 (6H, d, J=6.6 Hz)

1. concentrationThe reaction mixture was concentrated in vacuo
2. dissolutionthe residue dissolved in ethyl acetate (10 mL)
3. washthe mixture washed with water
4. extractionextracting with ethyl acetate (3×10 mL)
5. washThe combined organic extracts were washed with brine
6. dry with materialdried (MgSO4)
7. concentrationconcentrated in vacuo
8. customphase preparative HPLC (C-18, 10-90% MeCN in water 0.1% formic acid, 25 min gradient)

ORD record

ord-56e4aa85f3d54c389a0c2d1ca8ea542a

Source dataset

uspto-grants-2012_08

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08242104B2