Diisopropylethylamine → HCID 89927751, compound

Participants

Reaction Steps

To a mixture of Example 168 (50 mg, 0.060 mmol) and diisopropylethylamine (31 μL, 0.18 mmol) in DCM (1 mL) was added 4-nitrophenylchloroformate (52 mg, 0.26 mmol) and the solution stirred for 1 h. 2-Morpholinoethanamine (46 μL, 0.36 mmol) was then added and the solution stirred for 1 h, then the solvent removed and the residue purified by reverse-phase HPLC eluting with a water/acetonitrile gradient containing 0.1% TFA and lyophilized to give 20 mg (25%) of the product as the tri-TFA salt. MS (ES, m/z) 997 [M+H]+. 1H NMR (400 MHz, CDCl3) δ 9.54 (t, J=6.0 Hz, 1H), 9.25 (d, J=2.6 Hz, 1H), 9.17 (d, J=9.1 Hz, 1H), 8.92-8.83 (m, 2H), 8.08 (s, 1H), 8.03 (dd, J=5.1, 1.4 Hz, 1H), 7.98 (dt, J=7.0, 1.9 Hz, 1H), 7.69 (s, 1H), 7.62 (d, J=7.6 Hz, 1H), 7.58-7.46 (m, 3H), 7.46-7.35 (m, 2H), 6.27 (s, 1H), 4.74 (d, J=6.0 Hz, 2H), 4.68 (s, 2H), 4.23-4.12 (m, 2H), 4.02-3.82 (m, 4H), 3.74-3.50 (m, 22H), 3.25 (t, J=5.6 Hz, 2H), 2.93 (t, J=12.0 Hz, 2H), 1.27 (t, J=7.2 Hz, 6H).

Provenance & Evidence