Hydrochloric Acid → HCID 136373613, compound

Participants

Reaction Conditions

Reaction Steps

The product of Example 269A (0.083 g, 0.19 mmol) in tetrahydrofuran (4 mL) and methanol (0.020 mL, 0.5 mmol) at 0° C. was treated dropwise with a 2.0M solution of lithium borohydride in tetrahydrofuran (0.150 mL, 0.3 mmol). The reaction was stirred at 25° C. for 1 hour, acidified with 1M hydrochloric acid to a pH of approximately 2-4, diluted with water (15 mL), and the resulting precipitate was collected by filtration and dried. The crude product was chromatographed on silica gel with 1% methanol in chloroform to give the title compound. The sodium salt of the title compound was prepared according to the procedure of Example 1D. 1H NMR (300 MHz, DMSO-d6) δ ppm 0.90 (d, J=6.62 Hz, 6 H) 1.44 (q, J=7.11 Hz, 2 H) 1.70 (m, 1 H) 3.03 (t, J=6.99 Hz, 2 H) 6.61 (s, 1 H) 7.43 (d, J=5.15 Hz, 1 H) 7.55 (t, J=7.54 Hz, 1 H) 7.65 (d, J=8.09 Hz, 1 H) 7.77 (t, J=7.72 Hz, 1 H) 7.92 (d, J=7.72 Hz, 1 H) 8.35 (d, J=5.52 Hz, 1 H) 14.20 (s, 1 H) 14.81 (s, 1 H). MS (ESI−) m/z 431 (M−H)−.

Provenance & Evidence