Diisopropylethylamine → Methyl (S)-1-((S)-2-(4-(((4-((S)-1-((R)-2-(diethylamino)-2-phenylacetyl)pyrrolidine-2-carboxamido)benzyl)(phenyl)amino)methyl)phenylcarbamoyl)pyrrolidin-1-yl)-3,3-dimethyl-1-oxobutan-2-ylcarbamate

Participants

Reaction Steps

The product from Example 10A (15 mg, 0.022 mmol) was combined with (R)-2-(diethylamino)-2-phenylacetic acid (6.04 mg, 0.029 mmol), HATU (9.38 mg, 0.025 mmol) and Hunig's base (0.024 mL, 0.135 mmol) in DMSO (1.0 mL) and the mixture was stirred at room temperature for 45 min. Diluted with water and collected the solid by filtration. The product was purified by chromatography on silica gel, eluting with 0-5% MeOH in CH2Cl2 to give the title compound (11 mg, 57.2% yield). 1H NMR (500 MHz, CHLOROFORM-D) δ ppm 0.87 (t, J=7.10 Hz, 6 H) 0.94 (s, 9 H) 1.59-1.68 (m, 1 H) 1.78-1.86 (m, 2 H) 1.92-2.00 (m, 1 H) 2.04-2.12 (m, 2 H) 2.43-2.52 (m, 2 H) 2.55-2.67 (m, 4 H) 3.23-3.30 (m, 1 H) 3.56-3.61 (m, 2 H) 3.62 (s, 3 H) 3.71-3.78 (m, 1 H) 4.30 (d, J=9.61 Hz, 1 H) 4.48 (s, 4 H) 4.55 (s, 1 H) 4.72-4.77 (m, 2 H) 5.31 (d, J=9.77 Hz, 1 H) 6.63 (t, J=7.25 Hz, 1 H) 6.67 (d, J=7.93 Hz, 2 H) 7.06-7.12 (m, 6 H) 7.24-7.32 (m, 3 H) 7.33 (d, J=8.54 Hz, 2 H) 7.35-7.42 (m, 4 H) 9.22 (s, 1 H) 9.64 (s, 1 H).

Provenance & Evidence