Phenyl-2-aminoethyl sulfide → N-(2-Phenylthio-1-ethyl) 3-(4-Cyanophenyl)-2,3-dihydro-imidazo[2,1-b]thiazole-5-carboxamide hydrochloride

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Reaction Steps

The carboxylic acid from Step D, Example 1 (20.0 mg, 0.0625 mmol), 2-aminoethyl phenyl sulfide (9.6 mg, 0.0625 mmol), EDC hydrochloride (14.4 mg, 0.0751 mmol), HOBT (10.1 mg, 0.0751 mmol), and N,N-diisopropylethylamine (0.044 mL, 0.250 mmol) were stirred in dry, degassed DMF (1 mL) at 25° C. for 16 hours. The crude product was purified by preparative HPLC using a gradient of 5%-95% acetonitrile/0.1% TFA; 95%-5%/0.1% aqueous TFA over 15 min. The title compound was isolated after conversion to the HCl salt. MS (es) m+1=407. 1H-NMR (CD3OD): δ7.77 (s, 1H); 7.74 (d, 2H, J=8.3 Hz); 7.25-7.33 (m, 6H); 7.18 (t, 2H, J=7.2 Hz); 6.44 (bd, 1H, J=8.6 Hz); 4.77 (dd, 1H, J=11.8, 8.9 Hz); 3.91 (d, 1H, J=11.8 Hz), 3.40 (ddd, 2H, J=13.6, 6.8, 4.3 Hz); 3.00 (t, 2H, J=6.8 Hz).

Provenance & Evidence