Novel process for producing l-epi-2-inosose and novel...

Details Novel process for producing l-epi-2-inosose and novel... Novel process for producing l-epi-2-inosose and novel...

C - Chemistry, Metallurgy

12

P

C12P 19/02 (2006.01) C12N 1/20 (2006.01)

Patent

CA 2379947

Novel methods whereby L-epi-2-inosose and epi-inositol, which are useful as various drugs or synthesis intermediates, can be efficiently produced from less expensive myo-inositol. Namely, a method wherein myo-inositol is treated with a gram-negative bacterium capable of converting myo-inositol into L-epi-2- inosose to thereby convert the myo-inositol into L-epi-2-in-osose. The L-epi-2-inose thus obtained is further reacted in an aqueous reaction medium with a reducing agent comprising an alkali metal boron hydride or another alkali metal hydride to form epi-inositol and myo-inositol. Next, the epi-inositol is separated and isolated from the reduction reaction mixture comprising epi-inositol and myo- inositol to give epi-inositol.

Nouveaux procédés qui permettent de préparer de la L-épi-2-inosose et de l'épi-inositol utiles en tant que médicaments ou intermédiaires de synthèse produits à partir de myo-inositol moins cher. La présente invention concerne en particulier un procédé selon lequel du myo-inositol est traité avec une bactérie gram-négative capable de convertir le myo-inositol en L-épi-2-inosose. La L-épi-2-inosose ainsi obtenue est encore mise en réaction dans un milieu de réaction aqueux avec un agent réducteur contenant un hydrure de bore et de métal alcalin ou un autre hydrure de métal alcalin pour former de l'épi-inositol et du myo-inositol. Ensuite, l'épi-inositol est séparé et isolé du mélange de réaction réducteur contenant de l'épi-inositol et du myo-inositol.

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