Hydrochloric Acid → 3-(2-Bromo-1,3-thiazol-5-yl)-3-{7-[(methylsulfanyl)methyl]-1H-indol-3-yl}propan-1-ol

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Reaction Steps

A solution of 1.19 g (2.71 mmol) of the compound from Example 50A in 25 ml of tetrahydrofuran was added dropwise to 8.13 ml (8.13 mmol) of a 1N solution of diisobutylaluminum hydride in heptane/tetrahydrofuran and 25 ml of tetrahydrofuran at RT. The mixture was stirred at RT for 1 h, and the solution was mixed with ethyl acetate, water and 1N hydrochloric acid. The phases were separated, the aqueous phase was extracted three times with ethyl acetate, and the combined organic phases were washed with saturated aqueous sodium chloride solution. This was followed by drying over sodium sulfate, removal of the solid by filtration and removal of the solvents from the crude product in vacuo. Purification of the residue by preparative HPLC (mobile phase: acetonitrile/water gradient) resulted in 0.73 g (68% of theory) of the title compound.

Provenance & Evidence