HCID 58866187, compound → HCID 58866175, compound

Participants

Reaction Steps

The above compound (5-2) (5.0 g) was dissolved in methanol (130 mL) and a cation exchange resin (Muromac, 23.4 g) was added, and then the mixture was stirred overnight at room temperature. The insoluble material was removed by filtration and the filtrate was concentrated under reduced pressure. The resulting residue was purified by silica gel medium pressure column chromatography (chloroform:methanol=20:1→10:1) to obtain the titled compound (4.3 g).

Provenance & Evidence