反应详情

To a solution of 6-[2-chloro-5-((2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yl)-benzyl]-chroman-4-one (0.1 g, 0.23 mmol) in methanol (3 mL) was added sodium borohydride (0.017 g, 0.46 mmol). The reaction mixture was stirred for 2 h and quenched by the addition of water (10 mL) and extracted with ethyl acetate (150 mL×3), solvent was removed under reduced pressure to get crude (2S,3R,4R,5S,6R)-2-[4-chloro-3-(4-hydroxy-chroman-6-ylmethyl)-phenyl]-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol which was further purified by preparative HPLC (Yield=30 mg).

1. customquenched by the addition of water (10 mL)
2. extractionextracted with ethyl acetate (150 mL×3), solvent
3. customwas removed under reduced pressure