Methanol → HCID 24855565, compound

Participants

Reaction Conditions

Reaction Steps

Ethoxycarbonyl isothiocyanate (0.246 mL, 2.18 mmol) was added to a suspension of 4-{[2-(pyridin-2-ylmethoxy)propyl]amino}-1H-imidazole-5-carboxamide (0.500 g, 1.82 mmol, obtained from Example 20(c)) in dichloromethane (10 mL). After 0.5 h, methanol (2 mL) was added. The solvent was removed in vacuo and acetone (5 mL) and another portion of ethoxycarbonyl isothiocyanate (0.246 mL, 2.18 mmol) were added. After o.n. stirring, the reaction was concentrated in vacuo. To the residue was added 1 N NaOH (10 mL) and the resulting solution was heated for 4 h at 100° C. After cooling to r.t., 2 N HCl was added until pH˜6. The mixture was concentrated in vacuo. The product was purified by preparative HPLC resulting in 54.3 mg (9% yield) of the title compound.

Provenance & Evidence