Hydrochloric Acid → HCID 67040280, compound

Participants

Reaction Conditions

Reaction Steps

A solution of the product of Example 224F (118.9 mg, 0.159 mmol) in 1,4-dioxane (3 mL) was treated with a solution of lithium hydroxide monohydrate (13.3 mg, 0.318 mmol) in water (1.5 mL) at ambient temperature, then heated at 70° C. for 45 minutes. The reaction was cooled to room temperature, diluted with ethyl acetate (100 mL) and water (30 mL), adjusted the aqueous pH to 6 with 1N aqueous hydrochloric acid, and separated the layers. The organic phase was washed with water (2×25 mL) and brine (25 mL), dried over anhydrous sodium sulfate, filtered, and concentrated by rotary evaporation in vacuo. Purification of the residue by silica gel chromatography eluting with 5% methanol/methylene chloride afforded the title compound as a yellow solid (51 mg, 61%). 1H NMR (300 MHz, DMSO-d6) δ ppm: 1.34 (d, J=6.99 Hz, 6 H) 3.10-3.34 (m, 1 H) 5.61 (s, 2 H) 6.64 (d, J=8.46 Hz, 2 H) 6.90 (d, J=8.09 Hz, 1 H) 7.15 (d, J=8.46 Hz, 2 H) 7.65 (d, J=8.09 Hz, 1 H) 7.81 (dd, J=7.17, 1.65 Hz, 1 H) 7.97 (s, 1 H) 8.13-8.23 (m, 1 H) 8.32 (d, J=2.57 Hz, 1 H) 8.59 (s, 1 H) 8.76 (d, J=1.47 Hz, 1 H) 8.89 (d, J=8.09 Hz, 1 H) 10.18 (s, 1 H) 10.59 (s, 1 H); MS (ESI+) m/z 526 (M+H)+, (ESI−) m/z 524 (M−H)−.

Provenance & Evidence