Methanol → 8-(Benzyloxy)-5-(4-(4-(tert-butoxycarbonylamino)butyl)piperazin-1-yl)-1,6-naphthyridine-7-carboxylic acid

Participants

Reaction Steps

To a solution of methyl 8-(benzyloxy)-5-(4-(4-(tert-butoxycarbonylamino)butyl)-piperazin-1-yl)-1,6-naphthyridine-7-carboxylate (Example 4.1; 1.2 mmol) in a mixtire of methanol (2.5 ml) and water (2.5 ml) was added sodium hydroxide (2.5 mmol). The reaction mixture was stied at r.t. for 4 hr. The mixture was quenched with water and 2N HCl until pH=6 was reached. The mixture was extracted with AcOEt (2×). The organic layer was dried (MgSO4), and filtered to afford a solid (400 mg), that was used as such in the next step.

Provenance & Evidence