C - Chemistry – Metallurgy – 07 – H
Patent
C - Chemistry, Metallurgy
07
H
C07H 1/06 (2006.01) C07H 5/02 (2006.01)
Patent
CA 2620869
This invention relates to a process for selective capture, isolation and purification of chlorinated sucrose compounds, including chlorinated sucrose, their precursors and derivatives, including trichlorogalactosucrose (TGS), directly from chlorinated reaction mixture by column chromatography on adsorbents and under conditions which result in specific and selective affinity towards one or more of chlorinated sucrose compound. The process also integrates de-esterification of chlorinated sucrose esters adsorbed on the adsorbent while they are being treated with desorbent. The process also provides a novel approach to concentration and crystallization of TGS. The chlorinated sucrose derivatives, including TGS, thus isolated are substantially free from most impurities, salts and organic solvents. The process has high recovery of more than 95% in terms of desired chlorinated sucrose derivatives including TGS.
La présente invention concerne un processus de capture sélective, d'isolation de purification de composés saccharose chloré, comprenant du saccharose chloré, des précurseurs et des dérivés de ces composés, comprenant du trichlorogalactosaccharose (TGS), directement d'un mélange de réaction chloré par chromatographie en colonne sur des adsorbants et dans des conditions qui débouchent sur des affinités spécifiques sélectives pour un ou plusieurs composés saccharose chloré. Ce processus intègre aussi une désesterification des esters de saccharose chloré adsorbés sur les adsorbants pendant qu'ils sont traités avec un désorbant. Ce processus comprend aussi une nouvelle approche de concentration et de cristallisation du TGS. Les dérivés saccharose chloré comprenant le TGS ainsi isolés sont sensiblement exempts de la plupart des impuretés, des sels et des solvants organiques. Ce processus permet une récupération élevée de plus de 95 % en termes de dérivés saccharose chloré souhaités comprenant du TGS.
Aurora Sundeep
Kale Sandeep Bhaskar
Lali Arvind Mallinath
Ratnam Rakesh
Pharmed Medicare Pvt. Ltd.
Ridout & Maybee Llp
V. B. Medicare Private Limited
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