PROCESO PARA PRODUCIR D-(QUIRO)-INOSITOL.

摘要

A process for producing D-chiro-inositol which comprises either mixing an aqueous solution of kasugamycin or a salt thereof with a strongly acidic ion-exchange resin (of H<+> type) in a reactor or bringing the aqueous solution into contact with the resin in a column packed therewith, heating the aqueous solution and the resin under normal or applied pressure to effect hydrolysis of kasugamycin to thereby prepare an acidic reaction solution containing D-chiro-inositol, separating the acidic reaction solution from the resin, and recovering D-chiro-inositol from the solution. In this stage, it is possible to obtain efficiently high-purity D-chiro-inositol by passing the acidic reaction solution first through a column packed with a strongly acidic ion-exchange resin (of H<+> type) and then through another column packed with a strongly basic ion-exchange resin (of OH<-> type) to prepare a neutral eluate containing D-chiro-inositol, and concentrating the eluate to effect deposition of D-chiro-inositol crystals.