Polysaccharide derivative and separating agent
AssigneeDaicel Chemical Industries, Ltd.
InventorYoshio Okamoto
Life of this patent
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Abstract
The present invention provides a novel polysaccharide derivative in which part or the whole of the hydroxyl groups or the amino groups contained in a polysaccharide are displaced by two or more kinds of substituents, and a separating agent and a separating apparatus which comprise the polysaccharide derivative. The polysaccharide derivative of the present invention is extremely useful as a functional material for optical resolution.
Claims6
A polysaccharide derivative comprising a polysaccharide having hydroxyl groups replaced by different substituents at the 2- or 3-position and 6-position, said substituents being a 3,5-dimethylphenylcarbamate group represented by the following formula (I) and a 3,5-dichlorophenylcarbamate group represented by the following formula (II) as the sole substituents at the 2- or 3- and 6-position:
- ##STR13##
In a separating agent used for resolving a racemic modification into optical isomers, the improvement comprising said separating agent comprising a polysaccharide having hydroxyl groups replaced by different substituents at the 2- or 3-position and 6-position, said substituents being a 3,5-dimethylphenylcarbamate group represented by the following formula (I) and a 3,5-dichlorophenylcarbamate group represented by the following formula (II) as the sole substituents at the 2- or 3- and 6-position:
- ##STR14##
In a separating apparatus used in the resolution of a racemic modification into optical isomers, the improvement comprising said apparatus containing a separating agent comprising a polysaccharide having hydroxyl groups replaced by different substituents at the 2- or 3-position and 6-position, said substituents being a 3,5-dimethylphenyl-carbamate group represented by the following formula (I) and a 3,5-dichlorophenylcarbamate group represented by the following formula (II) as the sole substituents at the 2- or 3- and 6-position:
- ##STR15##
In a process for resolving a racemic modification into optical isomers, the improvement comprising contacting said racemic modification with a separating agent comprising a polysaccharide having hydroxyl groups replaced by different substituents at the 2- or 3-position and 6-position, said substituents being a 3,5-dimethylphenyl-carbamate group represented by the following formula (I) and a 3,5-dichlorophenylcarbamate group represented by the following formula (II) as the sole substituents at the 2- or 3- and 6-position:
- ##STR16##
Dependencies are inferred from the claim text.