EP1511774A1 - Derives de per (3,6-anhydro) cyclodextrines, leur preparation et leur utilisation pour separer des ions, notamment des anions a base de chrome et de manganese - Google Patents
Derives de per (3,6-anhydro) cyclodextrines, leur preparation et leur utilisation pour separer des ions, notamment des anions a base de chrome et de manganeseInfo
- Publication number
- EP1511774A1 EP1511774A1 EP03760007A EP03760007A EP1511774A1 EP 1511774 A1 EP1511774 A1 EP 1511774A1 EP 03760007 A EP03760007 A EP 03760007A EP 03760007 A EP03760007 A EP 03760007A EP 1511774 A1 EP1511774 A1 EP 1511774A1
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- unsaturated
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0009—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
- C08B37/0012—Cyclodextrin [CD], e.g. cycle with 6 units (alpha), with 7 units (beta) and with 8 units (gamma), large-ring cyclodextrin or cycloamylose with 9 units or more; Derivatives thereof
- C08B37/0015—Inclusion compounds, i.e. host-guest compounds, e.g. polyrotaxanes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/715—Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters
- A61K31/716—Glucans
- A61K31/724—Cyclodextrins
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
- A61P17/02—Drugs for dermatological disorders for treating wounds, ulcers, burns, scars, keloids, or the like
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P39/00—General protective or antinoxious agents
- A61P39/04—Chelating agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
- A61P7/06—Antianaemics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J45/00—Ion-exchange in which a complex or a chelate is formed; Use of material as complex or chelate forming ion-exchangers; Treatment of material for improving the complex or chelate forming ion-exchange properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0009—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
- C08B37/0012—Cyclodextrin [CD], e.g. cycle with 6 units (alpha), with 7 units (beta) and with 8 units (gamma), large-ring cyclodextrin or cycloamylose with 9 units or more; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3218—Polyhydroxy compounds containing cyclic groups having at least one oxygen atom in the ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/64—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
- C08G18/6484—Polysaccharides and derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/71—Monoisocyanates or monoisothiocyanates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
Definitions
- the present invention relates to new derivatives of per (3, 6 -anhydro) cyclodextrins and of polymers based on per (3, 6 -anhydro) cyclodextrins, which can be used in particular to fix and separate ions such as anions based on chromium and manganese.
- This invention can find its application in the field of decontamination of the environment with these polluting ions, as well as for human decontamination.
- Cyclodextrins or cyclomalto-oligosaccharides are compounds of natural origin formed by the cyclic chain of glucose units linked in oc- (1,4). Derivatives thereof can consist of maltose units linked in oc- (1,4).
- Documents FR-A 2 744 124 [7], document FR-A 2 764 525 [8] and document FR-A 2 807 044 [9] mention other derivatives of per (3, 6-anhydro) cyclodextrins substituted in position 2, used for the separation of different ions, in particular potassium and cesium in the case of document [7] thanks to the presence of the acetyl substituent, or lead in the case of document [8] thanks to the presence of a methoxy substituent or of polluting ions such as the cobalt, uranyl ion and the lanthanide ions in the case of document [9] thanks to the presence of a substituent -0-CH 2 -C0 2 H.
- the present invention specifically relates to new derivatives and new polymers of peranhydrocyclodextrins in which the substituent in position 2 has been chosen so as to confer on these compounds complexing properties of anions based on chromium or manganese, such as l chromate, dichromate and permanganate anion.
- the per (3, 6-anhydro) cyclodextrin derivative corresponds to one of the following formulas (I) or (II):
- -OCONHR 2 and the other R 1 which may be identical or different, represent a group corresponding to one of the formulas: -OCONHR 2 , -OH, -OR 3 , -SH, -SR 3 , -OCOR 3 ,
- R or R 2 identical or different, represent an aliphatic group, saturated or unsaturated
- R 3 and R 4 identical or different, represent a saturated or unsaturated, aliphatic or aromatic hydrocarbon group, optionally substituted by halogen atoms which may contain one or more heteroatoms chosen from 0, S and N
- R 1 represents a group -OCONH ( CR 5 R 6 ) m NHCOOR 7
- R 5 and R 6 identical or different, represent H or an aliphatic group, saturated or unsaturated
- R 7 represents a glucosidic or maltosidic unit of peranhydrocyclodextrin and m is an integer ranging from 1 to 20; - n is equal to 6, 7 or 8.
- the aliphatic or aromatic hydrocarbon groups capable of being used for R 3 and R 4 can be of various types. They consist of a hydrocarbon chain in which certain carbon atoms can be replaced by one or more heteroatoms such as O, S and N, and they can comprise one or more ethylenic or acetylenic unsaturations. Furthermore, the hydrocarbon group can be substituted by halogen atoms.
- R 3 and R 4 are aliphatic hydrocarbon groups, they can, in particular, represent a linear or branched alkyl group of 1 to 20 carbon atoms, such as a methyl, ethyl, n-propyl or i-propyl group.
- R 3 and R 4 are aromatic hydrocarbon groups, they can in particular represent the phenyl group or the tosyl group, optionally substituted, for example, by alkyl groups of 1 to 20 carbon atoms.
- R 1 represents the group -OCONHR 2
- R or R 2 when at least one of R 1 represents the group -OCONHR 2 , the R or R 2 , identical or different, (R 2 when several R 1 represent OCONHR 2 ) represent a saturated or unsaturated aliphatic chain, that is to say an alicyclic chain which may optionally include unsaturations.
- the R 2 or R 2 can represent a linear or branched alkyl group comprising from 1 to 10 carbon atoms, such as a methyl, ethyl or hexyl group.
- R 5 and R 6 when at least one of the R 1 represents the group -OCONH (CR 5 R 6 ) m NHCOOR 7 , the R 5 and R 6 , identical or different, represent H or an aliphatic group, saturated or unsaturated, that is to say an alicyclic chain which may optionally include unsaturations.
- R 5 and R 6 may represent an alkyl group, linear or branched, comprising from 1 to 10 carbon atoms, such as a methyl or ethyl group.
- the group -OCONH (CR 5 R 6 ) m NHCOOR 7 makes the junction between two glucosidic (if cyclodextrin corresponds to formula (I)) or maltosidic (if cyclodextrin corresponds to formula (II) units )) of the same peranhydrocyclodextrin, the R 7 thus corresponding to a glucosidic or maltosidic unit of the same peranhydrocyclodextrin according to the invention.
- the derivative of per (3, 6-anhydrocyclodextrin) is a derivative of oc-cyclodextrin, that is to say that in the formulas (I) and (II) given above, n is equal to 6.
- the derivative used corresponds to formula (I) or (II), in which all the R 1 represent the group -OCONHR 2 with R 2 having the meaning given above, and n is equal to 6. in particular, all of the R 2 can represent an ethyl or hexyl radical.
- the cyclodextrin derivatives of the invention can be prepared as follows.
- cyclodextrin derivative corresponds to the formula (I) or (II) given above in which at least one of the R 1 represents the group -0-CO-NHR 2 and / or -OCONH (CR 5 R 6 ) m NHCOOR 7 , any other R 1 representing a group such as those proposed above and n being equal to 6, 7 or 8 and m is an integer ranging from 1 to 20, this can be prepared by a process successively comprising: a step consisting in reacting a per (3, 6-anhydro) cyclodextrin corresponding to one of the following formulas (III) or (IV):
- n is equal to 6, 7 or 8, with an isocyanate of formula OC ⁇ -R 2 and / or a diisocyanate OC ⁇ (CR 5 R 6 ) m ⁇ CO in an amount such that at least one of the OH groups is converted into -OCONHR 2 group and / or in -OCONH group (CR 5 R 6 ) m NHCOOR 7 ; and a step consisting, when all the OH have not been transformed into the group -OCONHR 2 and / or -OCONH (CR 5 R 6 ) m NHCOOR 7 , optionally reacting the remaining -OHs with one or more reagents for the transform into the desired R 1 groups different from -OCONHR 2 or -OCONH (CR 5 R 6 ) m NHCOOR 7 .
- the procedure is carried out by reacting the partially modified cyclodextrin , obtained after the first step mentioned above, with an alkali metal hydride to convert the group (s) -OH to OM groups with M representing an alkali metal and then the derivative obtained is reacted with a halide of formula R 3 X in which R 3 has the meaning given above and X is a good leaving group such as a halogen atom.
- the procedure is first, as before, (i.e. reacting partially modified peranydrocyclodextrin with an alkali metal hydride) and then reacting the derivative obtained with a halide or an acid anhydride of formula R 3 COX or (R 3 CO) 2 0 in which R 3 has the meaning given above and X represents a leaving group.
- the partially modified per (3, 6-anhydro) cyclodextrin is first transformed into the alcoholate by the action of an alkali metal hydride, then the alcoholate is converted into a derivative comprising a leaving group of formula -OSO2R 3 , which then reacted in one or more steps with one or more suitable reagents to replace this leaving group with the desired group R 1 .
- N3M can be reacted with the compound defined in 2).
- the compound thus obtained, called azide can undergo catalytic hydrogenation or be treated in the presence of ammonia NH3, in order to obtain the product where R 1 must represent -NH2.
- R 1 must represent -NHR 3 or -NR 3 R 4 is obtained by reacting the compound defined in 2) with the compound NH2R 3 or NHR 3 R 4 .
- R 1 must represent -SH or -SR 3
- R 1 When R 1 must represent a hydrocarbon group -R 3 , it is reacted with R j LiCu to give a final compound where R 3 then represents a hydrocarbon group, as defined above.
- the compound where R 1 represents -CN may by gentle hydrolysis give a compound where R 1 will represent -CONH2-
- the compound where R 1 represents -CN may by complete hydrolysis give a compound where R 1 will represent -COOH.
- R 5 and R 6 which are identical or different, represent H or a saturated or unsaturated aliphatic group, the OH having not reacted during the reaction which can be transformed into groups, identical or different, representing groups chosen from: -OCONHR 2 ,
- At least two derivatives of per (3, 6-anhydro) cyclodextrin are linked by at least one carbamate bond of the type -0-CO-NH (CR 5 R 6 ) m NH-CO-0-, this bond being formed by reaction of two -OHs in position 2 of a glucosidic or maltosidic entity of two per (3, 6-anhydro) cyclodextrins.
- This polymer can also contain -O-CO-NH (CR 5 R 6 ) m NH-CO- O- bonds formed by reaction of the diisocyanate mentioned above with two -OHs of two glucoside units of the same peranhydrocyclodextrin.
- R 5 and R 6 may represent an alkyl group, linear or branched, comprising from 1 to 10 carbon atoms, such as a methyl or ethyl group.
- R 1 represents the group -OCONHR 2
- the R 2 or R 2 represents a saturated or unsaturated aliphatic chain.
- R 2 may represent a linear or branched alkyl group comprising from 1 to 10 carbon atoms, such as a methyl, ethyl or hexyl group.
- the cyclodextrin units chained in the polymer described above comprise at least, in part, at positions 2 of the anhydroglucose rings (if the polymer is obtained from the cyclodextrins of formula
- the index n, in this polymer is equal to 6 and R 5 and R 6 both represent H and m is equal to 6.
- per (3, 6-anhydro) cyclodextrin derivatives described above as well as the polymers of per (3, 6-anhydro) cyclodextrin can be used in particular for fixing or separating ions, more particularly anions based on chromium and / or manganese, such as Cr0 4 2 X Cr 2 0 7 2 " and Mn0 4 X
- the subject of the invention is also a method for fixing and separating ions comprising the steps consisting in:
- -OCONHR 2 and the other R 1 which may be identical or different, represent a group corresponding to one of the formulas: -OCONHR 2 , -OH, -OR 3 , -SH, -SR 3 , -OCOR 3 , -NH 2 , -NHR 3 , -NR 3 R 4 , -CONH 2 , -CONHR 3 , -CONR 3 R 4 , -CN, -COOR 3 , -OCH 2 CO 2 H, -COOH and -R 3 , in which the or the R 2 , identical or different, represent an aliphatic group, saturated or unsaturated, R 3 and R 4 'identical or different, represent a hydrocarbon group, aliphatic or aromatic, saturated or unsaturated, optionally substituted by halogen atoms which may contain one or more heteroatoms chosen from O, S and N, and / or
- - n is equal to 6, 7 or 8;
- R 2 or Rs represents an aliphatic group, saturated or unsaturated
- R 3 and R 4 which may be identical or different, represent a hydrocarbon group, aliphatic or aromatic, saturated or unsaturated, which may contain one or more heteroatoms chosen from O, S and N, and n is equal to 6, 7 or 8 and m is an integer ranging from 1 to 20, to fix said ions in the form of complex with the per (3,6-anhydro) cyclodextrin derivative or the polymer, and separating said ions thus complexed from said medium.
- the ions capable of being fixed or separated by the process of the invention can be of various types, such as polluting metal ions.
- the process of the invention applies in particular to the fixation of chromium-based anions, in particular anions containing chromium of valence VI such as chromate or bichromate ions, and manganese-based anions such as permanganate anions in the form of a complex with the derivative or polymers of per (3, 6-anhydro) cyclodextrin mentioned above.
- the chromic acid H 2 Cr0 4 and its salts can cause dermatoses and ulcers in individuals who handle them.
- Potassium dichromate can be fatal in doses of 0.25 to 0.30 g and can cause stomach upset and enteritis.
- Chromate or dichromate ions also appear to be methemoglobinizing poisons.
- the cyclodextrin derivatives and the polymers of per (3,6-anhydro) cyclodextrin, said cyclodextrin corresponding to the formulas (I) and (II) given above have a high specificity for the anions based on chromium or manganese, because they have a complexing capacity for these metals with very high yields.
- a polymer in accordance with the present invention which can be used effectively within the framework of the fixing process, is a polymer, for which n is equal to 6, R 5 and R 6 both represent H and m is equal to 6 .
- the subject of the invention is also the complexes of an ion chosen from Cr0 4 2 X Cr 2 0 7 2 X Mn0 4 " with a derivative of per (3, 6-anhydro) cyclodextrin from formula (I) or (II) described above and / or with a polymer as defined above.
- the complex of an ion chosen from Cr0 4 2 X Cr 2 0 7 2 X Mn0 4 ⁇ when the peranhydrocyclodextrin derivative corresponds to formula (I), is such that all R 1 represent the group -O- CO-NHR 2 and n is 6, R 2 having the same meaning as that given above.
- the cyclodextrin derivative When the medium containing the ions to be separated or fixed is an aqueous solution, the cyclodextrin derivative can be dissolved in an immiscible organic solvent with the aqueous solution to form the complex in the organic solution and easily separate it from the aqueous solution, by example by simple decantation followed by separation of the aqueous solution and the immiscible organic solvent containing the complexed ions. It is also possible to use the cyclodextrin derivative or the polymers in aqueous solution, in particular for ensuring the decontamination of living beings or even in preparation in dressings.
- the invention also relates to a pharmaceutical composition for the decontamination of chromium and manganese of a living being, characterized in that it comprises a derivative of per (3, 6-anhydro) cyclodextrin corresponding to one formulas (I) and (II), defined above and / or a polymer of per (3, 6-anhydro) cyclodextrin and diisocyanate as described above.
- the derivative used in this composition is such that all of the R 1 represent the group -O-CO-NHR 2 and n is equal to 6, R 2 having the same definition as that given above.
- composition can be administered orally or by injection. Administered orally, it must be adequately conditioned to pass the stomach without being hydrolyzed.
- FIG. 1 is a schematic representation of the retention factors Rf of different anions, by the per (3, 6-anhydro) cyclodextrin of example 1.
- FIG. 2 is a schematic representation of the retention factors Rf of different cations, by the per (3, 6 -anhydro) cyclodextrin of example 1.
- This compound corresponds to the formula (I) given above in which all of the R 1 represent OCONHCH 2 CH 3 .
- the solution After one night, the solution is cooled then treated with 10 ml of methanol and left under stirring for 1 hour. The solution is then brought to dryness, by passing through a rotary evaporator followed by the vane pump. The residue obtained is then passed through a column of silica gel (eluent methanol / water 1: 6).
- This product can be used as it is for complexing chromium or manganese.
- EXAMPLE 2 Preparation of per 2-O-hexylcarbamate of per (3, 6-anhydro) cyclomaltohexaose.
- This compound corresponds to the formula (I) given above in which all of the R 1 responds -OCONH (CH 2 ) 5 -CH 3 and n is equal to 6.
- DMSO diethyl sulphoxide
- Example 1 In each test, the compound of Example 1 is introduced onto the plate, which if it complexes the ions, will be retained on the plate.
- the plates are then developed four times in water, due to the low solubility in water, then the retention factor Rf is determined, which corresponds to the ratio (distance traveled by the cyclodextrin derivative / distance traveled by the solvent ). The lower the Rf, for a given ion, the more the ion in question will complex with the cyclodextrin compound.
- the cyclodextrin prepared according to Example 1 has a high rate of complexation for chromium ions such as the Cr 2 0 2 " and Cr0 4 2" ions and the manganese ions Mn0 4 X Therefore , the cyclodextrin compounds according to the invention and in particular that prepared according to Example 1, are particularly advantageous in the field of environmental decontamination and in the field of human decontamination in anions based on chromium and manganese .
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Abstract
Description
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Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0207205A FR2840906B1 (fr) | 2002-06-12 | 2002-06-12 | Derives de per(3,6-anhydro) cyclodextrines, leur preparation et leur utilisation pour separer des ions, notamment des anions a base de chrome et de manganese |
| FR0207205 | 2002-06-12 | ||
| PCT/FR2003/001741 WO2003106507A1 (fr) | 2002-06-12 | 2003-06-11 | Derives de per (3,6-anhydro) cyclodextrines, leur preparation et leur utilisation pour separer des ions, notamment des anions a base de chrome et de manganese |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1511774A1 true EP1511774A1 (fr) | 2005-03-09 |
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ID=29595163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03760007A Withdrawn EP1511774A1 (fr) | 2002-06-12 | 2003-06-11 | Derives de per (3,6-anhydro) cyclodextrines, leur preparation et leur utilisation pour separer des ions, notamment des anions a base de chrome et de manganese |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20060014722A1 (fr) |
| EP (1) | EP1511774A1 (fr) |
| JP (1) | JP2005534729A (fr) |
| AU (1) | AU2003250357A1 (fr) |
| FR (1) | FR2840906B1 (fr) |
| WO (1) | WO2003106507A1 (fr) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7036374B2 (en) | 2002-01-25 | 2006-05-02 | William Thomas Pike | Micro-machined suspension plate with integral proof mass for use in a seismometer or other device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2744124B1 (fr) * | 1996-01-30 | 1998-03-06 | Commissariat Energie Atomique | Derives substitues des per(3,6-anhydro)cyclodextrines, leur procede de preparation et leur utilisation pour la separation d'ions |
| DE19612680C2 (de) * | 1996-03-29 | 2000-02-03 | Inst Chemo Biosensorik | Kationselektiver Sensor |
| JP2001504879A (ja) * | 1996-11-22 | 2001-04-10 | ザ リージェンツ オブ ザ ユニバーシティ オブ カリフォルニア | シクロデキストリンポリマー分離材 |
| FR2764525B1 (fr) * | 1997-06-13 | 1999-07-23 | Commissariat Energie Atomique | Fixation ou separation d'ions, notamment de pb, par des derives de per (3,6 anhydro) cyclodextrines |
| FR2807044B1 (fr) * | 2000-03-28 | 2002-05-03 | Commissariat Energie Atomique | Derives de per(3,6-anhydro) cyclodextrines, leur preparation et leur utilisation pour separer des ions, notamment de cobalt, de lanthanides et d'uranyle |
-
2002
- 2002-06-12 FR FR0207205A patent/FR2840906B1/fr not_active Expired - Fee Related
-
2003
- 2003-06-11 EP EP03760007A patent/EP1511774A1/fr not_active Withdrawn
- 2003-06-11 AU AU2003250357A patent/AU2003250357A1/en not_active Abandoned
- 2003-06-11 US US10/517,582 patent/US20060014722A1/en not_active Abandoned
- 2003-06-11 JP JP2004513337A patent/JP2005534729A/ja active Pending
- 2003-06-11 WO PCT/FR2003/001741 patent/WO2003106507A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03106507A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005534729A (ja) | 2005-11-17 |
| FR2840906B1 (fr) | 2004-07-16 |
| WO2003106507A1 (fr) | 2003-12-24 |
| AU2003250357A8 (en) | 2003-12-31 |
| US20060014722A1 (en) | 2006-01-19 |
| AU2003250357A1 (en) | 2003-12-31 |
| FR2840906A1 (fr) | 2003-12-19 |
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