Triethylamine → HCID 67040713, compound

Participants

Reaction Steps

To a solution of the product from Example 51E (59 mg, 0.1 mmol) and Boc-Abu-OH (22 mg, 0.11 mmol) in tetrahydrofuran (5 ml) was added 3-(diethoxyphosphoryloxy)-1,2,3-benzo-triazin-4(3H)-one (36 mg, 0.11 mmol) and triethylamine (0.07 ml, 0.5 mmol). The mixture was stirred at room temperature for 16 hours then poured into saturated sodium carbonate solution and extracted with ethyl acetate. The organic layer was dried with magnesium sulfate, filtered and evaporated. To the residue was added dichloromethane (2 ml) and trifluoroacetic acid (2 ml) then stirred at room temperature for 1 hour. The solvent was evaporated and the residue was purified by HPLC with NH4OH to provide the title compound. (62 mg, 85%). 1H NMR (300 MHz, DMSO-D6) δ ppm: 0.90 (t, J=7.54 Hz, 3 H) 1.33 (d, J=6.99 Hz, 6 H) 1.48 (m, 1 H) 1.66 (m, 1 H) 1.90 (s, 3 H) 3.22 (m, 2 H) 7.02 (m, 2 H) 7.40 (d, J=8.46 Hz, 2 H) 7.52 (d, J=8.46 Hz, 2 H) 7.61 (d, J=8.46 Hz, 1 H) 7.72 (m, 5 H) 7.94 (s, 1 H) 8.52 (s, 1 H) 8.79 (s, 1 H) 10.33 (s, 1 H); MS (ESI+) m/z 670, 672 (M+H)+.

Provenance & Evidence