Sodium borohydride → Methyl 6-[bis-(tert-butoxycarbonyl)amino]-3-(2-hydroxymethylfuran-3-yl)-2-(4-methylbenzene-sulfonyloxy)-benzoate

Participants

Reaction Steps

Sodium borohydride (0.304 g) was added to a solution of methyl 6-[bis-(tert-butoxycarbonyl)amino]-3-(2-formylfuran-3-yl)-2-(4-methylbenzenesulfonyloxy)-benzoate (Intermediate 22, 3.9 g) in ethanol (50 mL) and the mixture was stirred for 15 minutes. The mixture was evaporated to dryness and the residue was partitioned between ethyl acetate and water. The organic layer was separated, dried (Na2SO4) and filtered. The filtrate was evaporated to dryness to give methyl 6-[bis-(tert-butoxycarbonyl)amino]-3-(2-hydroxymethylfuran-3-yl)-2-(4-methylbenzene-sulfonyloxy)-benzoate (3.82 g) as a white solid.

Provenance & Evidence