WO2004007516A1 - 配糖体の製造方法 - Google Patents
配糖体の製造方法 Download PDFInfo
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- WO2004007516A1 WO2004007516A1 PCT/JP2003/008820 JP0308820W WO2004007516A1 WO 2004007516 A1 WO2004007516 A1 WO 2004007516A1 JP 0308820 W JP0308820 W JP 0308820W WO 2004007516 A1 WO2004007516 A1 WO 2004007516A1
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- phenolic hydroxyl
- carbon atoms
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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
- A61K31/7028—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages
- A61K31/7034—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/60—Sugars; Derivatives thereof
- A61K8/602—Glycosides, e.g. rutin
-
- 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
- A61P39/06—Free radical scavengers or antioxidants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H15/00—Compounds containing hydrocarbon or substituted hydrocarbon radicals directly attached to hetero atoms of saccharide radicals
- C07H15/20—Carbocyclic rings
- C07H15/203—Monocyclic carbocyclic rings other than cyclohexane rings; Bicyclic carbocyclic ring systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/52—Stabilizers
- A61K2800/522—Antioxidants; Radical scavengers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/02—Preparations for care of the skin for chemically bleaching or whitening the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q5/00—Preparations for care of the hair
- A61Q5/12—Preparations containing hair conditioners
Definitions
- the present invention relates to a method for producing a glycoside. More specifically, the present invention relates to a method for producing a glycoside in which a polyphenol compound and a sugar are bound by a glycosidic bond, and particularly to a method for producing a glycoside in which a gallic acid derivative and a sugar are bound by a glycosidic bond.
- C-nox compounds having a whitening effect and an antioxidant effect.
- gallic acid and its esters have been used as skin whitening agents or antioxidants, external preparations for the skin such as creams and emulsions, and hair makeup. It is expected to be applied to many fields, such as hair treatment agents such as cosmetics and jewels.
- hair treatment agents such as cosmetics and jewels.
- JP-A-2000-314084 a specific action and effect of imparting elasticity to hair and modifying the hair has been found (JP-A-2000-314084).
- gallic acid derivatives have problems such as discoloration and precipitation at the time of formulation, and it has been difficult to sufficiently exhibit a whitening effect and an antioxidant effect.
- a method for preventing such coloring and precipitation of polyphenols a method of adding a vorphyrin metal complex and an organic reducing agent (JP-A-63-145213), a method of using a certain polyol alone or ascorbic acid, etc. (Japanese Unexamined Patent Publication (Kokai) No. 6-239716) is known, but this method is not yet satisfactory.
- glycosides As a method for solving the problems of the above-mentioned polyphenol compounds, the idea of using so-called glycosides has been known for a long time. For example, by binding dalcose to highly toxic hydroquinone, it can be converted to "arbutin" having a whitening effect. Similarly, an invention using a so-called glycoside in which a sugar derivative is bonded to at least one of the three hydroxyl groups present in gallic acid has also been disclosed (Japanese Patent Application Laid-Open No. 2000-31916). In this publication, as a method for producing glycosides, gallic acid or an ester thereof, and a hydroxyl group are described.
- acetylated saccharide or anomeric halogenated saccharide is reacted in a solvent in the presence of an acid catalyst such as BF3 'Et20, SnCI4, ZnCI2 to obtain a glycosylated product, If necessary, a method is disclosed in which a deprotection reaction is carried out in the presence of an acid or alkali catalyst, followed by extraction and purification by column chromatography.
- an acid catalyst such as BF3 'Et20, SnCI4, ZnCI2
- the yield of the dalcosylated product obtained by the method disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 2000-319191 is low ⁇ unsatisfactory.
- JP-A-62-26394, JP-A-62-26395 and JP-A-1-249796 and JP-A-5-51394 disclose one or two compounds in a molecule.
- the reaction between a compound having a phenolic hydroxyl group and a percetyl derivative of a sugar such as glucose is allowed to proceed while distilling off acetic acid as a by-product to the outside of the reaction system. It is described that a compound having a glycoside bond formed by removing acetic acid from a hydroxyl group and an acetyl group on a carbon atom of a peracetyl derivative of a sugar can be obtained.
- the present invention relates to a compound having at least two phenolic hydroxyl groups in a molecule and a anomeric compound having at least two phenolic hydroxyl groups in a molecule from a sugar in which a hydroxyl group on a carbon atom is acetylated.
- An object of the present invention is to provide a method for producing a glycoside in which at least two sugars are glycoside-linked to a phenolic hydroxyl group. Disclosure of the invention
- the present inventors have studied a method for obtaining a glycosylated product of gallic acid methyl ester by reacting gallic acid methyl ester with pentaacetyl glucose in the presence of an organic solvent and a Lewis acid. If acetic acid generated in the reaction is present in the reaction system, the reaction substrate and the reaction product are in equilibrium, and the phenolic hydroxyl of gallic acid methyl ester The compound in which pentaacetylglucose is linked to one glycosidic group and the methyl ester gallate ester are in equilibrium with the compound in which pentaacetylglucose is linked to two glycosidic bonds to the hydroxyl group.
- the present inventors have conducted intensive studies based on this finding, and as a result, the phenolic hydroxyl group of methyl gallate and methyl gallate was obtained by performing the reaction while removing acetic acid generated in the above-mentioned reaction out of the reaction system. Found that the yield of a compound having two glycoside-linked pentaacetyl glucose was significantly improved, and completed the present invention.
- the present invention provides a method for reacting a compound having at least two or more phenolic hydroxyl groups in a molecule with a sugar in which a hydroxyl group on a anomeric carbon atom is acylated in the presence of an organic solvent and an acid catalyst.
- the present invention relates to a method for producing a glycoside in which an atom is bound by a glycosidic bond.
- the compound having at least two phenolic hydroxyl groups in a molecule used in the present invention is not particularly limited, but specifically, a compound represented by the formula (1) or a compound represented by the formula (2) Compounds are exemplified.
- R1 has a hydrogen atom, a linear or branched alkyl or alkenyl group having 1 to 18 carbon atoms, an acyl group or a substituent having 1 to 18 carbon atoms.
- R4 represents a phenyl group which may be substituted.
- R3— (C 0) R4 (where R3 represents a linear or branched alkylene or alkenyl group having from 18 to 18 carbon atoms, and R4 represents a phenyl group which may be substituted.
- n represents an integer of 2 to 5
- m represents an integer of 1 to 3.
- R1 represents a hydrogen atom, or a linear or branched alkyl group or alkenyl group having 1 to 10 carbon atoms.
- R1 has a hydrogen atom, a linear or branched alkyl or alkenyl group having 1 to 18 carbon atoms, an acyl group or a substituent having 1 to 18 carbon atoms. Represents a benzyl group.
- R3— (C 0)
- R4 (where R3 represents a linear or branched alkylene or alkenyl group having 1 to 18 carbon atoms, and R4 is a phenyl group which may be substituted) Represents an amino group which may have a substituent, a phenyl group which may have a substituent, one O—R5, one S—R5, —SS-R5, and —NH—R5.
- One NHS02—R5 (where R5 represents a phenyl group which may be substituted), n represents an integer of 2 to 5, and m represents an integer of 1 to 3.
- the benzyl group which may have a substituent includes a methylbenzyl group and a methoxybenzyl group
- the phenyl group which may be substituted includes a phenyl group having 1 to 18 carbon atoms. Examples thereof include a phenyl group substituted by a linear or branched alkyl or alkenyl group, a hydroxyl group, an alkoxy group, a benzyloxycarbonyl group, a carboxyl group, an amino group, and an alkyl-substituted amino group.
- examples of the amino group which may have a substituent include ⁇ , ⁇ ′-dimethylamino group, N, N′-getylamino group, ⁇ , N′-ditylamino group and the like.
- R1 represents a hydrogen atom, or a linear or branched alkyl or alkenyl group having 1 to 10 carbon atoms.
- Typical compounds having at least two phenolic hydroxyl groups in the molecule include, for example, catechol, resorcin, hydroquinone, ⁇ -resorcinic acid, r-resorcinic acid, 2,4-dihydroxybenzaldehyde Phenolic hydroxyl groups such as 3,4-dihydroxybenzaldehyde, 2,5-dihydroxybenzaldehyde, 2.4-dihydroxyacetophenone, 3.4-dihydroxyacetophenone and 2,5-dihydroxyacetophenone Compounds with two, compounds with three phenolic hydroxyl groups typified by gallic acid and methyl gallate, 1,3-bis (2,4, dihydroxyphenyl) propane, 1,3-bis (2,4 , Dihydroxyphenyl) 1-1 propanone, 1,3-bis (2,4,1-dihydroxy) 1-propene-1 3-one, 1,3-bis (2-hydroxy-4-benzyloxyphenyl) 1-1-propene-3-one, 1- (2,
- the gallic acid derivative is not particularly limited, and examples thereof include alkyl gallates such as methyl gallate, ethyl gallate, propyl gallate, and isopropyl gallate, among which gallic acid is easily available. Methyl acid and ethyl gallate are preferred compounds.
- the saccharide in which the hydroxyl group on the anomeric carbon atom used in the present invention is acetylated is not particularly limited, and some or all of the hydroxyl groups bonded to carbon atoms other than the anomeric carbon atom of the saccharide are acetylated. Alright.
- Examples of such saccharides in which the hydroxyl group on the anomeric carbon atom is acetylated include 1, 2, 3, 4, 6-penter o-acetyl dalcoviranose (pentaacetyl glucose), 1, 2, 3, 4, 6, 2 ', 3,, 4', 6'Non o o-Acetyl maltoviranose (Nona acetyl mar! ⁇ 1s), 1,2,3,4,6-Penter o-Acetyl galacto villanose ( 11-O-acylated sugars such as pentaacetyl galactose), phenyl
- thioglycosides such as -2, 3, 4, 6-tetra-o-acetyl-thiodalcoviranoside.
- pentaacetyl glucose which has high storage stability and is easily activated by an acid, is preferred, and pentaacetyl glucose is most preferred.
- These sugars in which the hydroxyl group on the anomeric carbon atom is acetylated can be purchased as a commercial product, but those which can be easily synthesized such as pentaacetylglucose can also be synthesized (see Example 5). ).
- the synthesized sugar in which the hydroxyl group on the anomeric carbon atom is acetylated can be used once as a powder, but it is necessary to use a reaction solution containing the saccharide in which the hydroxyl group on the anomeric carbon atom is acetylated. You can also. However, when an 11-o-acylated sugar such as pentaacetyl glucose is synthesized using a sugar such as glucose and acetic anhydride, the reaction solution containing the acetylated saccharide in which the hydroxyl group on the anomeric carbon atom is acetylated is used.
- acetic acid Since acetic acid is present in acetic acid, it is necessary to use this acetic acid after distilling it off or removing it by washing with water.
- saccharides have ⁇ -isomer and isomers of the isomer.
- the ⁇ -isomer and the jS-isomer can be used alone, but a mixture of the isomer and the isomer can also be used.
- ⁇ Isomers are preferred because of their high reactivity.
- isomerization of the yS form to the body is observed partially, but when a mixture of the body and the body is used, the isomerization from the body to the o body tends to be slightly suppressed. .
- the amount of sugar in which the hydroxyl group on the anomeric carbon atom is acetylated for use in the reaction with a compound having at least two phenolic hydroxyl groups in the molecule is not particularly limited as long as the reaction proceeds sufficiently. However, usually, it is used in an equimolar to 10-fold molar amount, preferably 1.1- to 5-fold molar amount, based on the phenolic hydroxyl group present in the compound having at least two phenolic hydroxyl groups in the molecule. . If the amount is less than this range, not only is the stoichiometry insufficient, but also the reaction rate tends to decrease, and the reaction yield tends to decrease, which is not preferable. If the amount is larger than the above range, not only the improvement in the reaction yield is not observed but also the subsequent isolation operation tends to be difficult, for example, the viscosity of the reaction mixture is increased and the filterability is deteriorated. .
- an organic solvent other than acetic acid can be used as the organic solvent used for the reaction between the compound having at least two phenolic hydroxyl groups in the molecule and the saccharide in which the hydroxyl group on the anomeric carbon atom is acetylated.
- the organic solvent include compounds having at least two phenolic hydroxyl groups in the molecule, sugars in which the hydroxyl group on the anomeric carbon atom is acetylated, and those which are inert to the target product obtained by reacting them. There is no particular limitation as long as it is present.
- aromatic hydrocarbons represented by benzene, toluene, (mixed) xylene, ethylbenzene, mesitylene, trimethylbenzene, styrene, etc., pentane, hexane, cyclohexane, heptane, octane, nonane , Decane, a-Pinene, etc., aliphatic hydrocarbons, dichloromethane, dibromomethane, 1,2-dichloroethane, 1,3-dibromoethane, monochrome benzene, o-dichlorobenzene, p-dichlorobenzene , Monobromobenzene, dibromobenzene, fluorobenzene, difluorobenzene Halogenated hydrocarbons, nitrated hydrocarbons such as nitromethane, nitroethane, and nitrobenzene, methyl a
- N-methylpyrrolidone nitrogen-containing polar solvents such as 1,3-dimethylimidazolidinone, dimethyl sulfoxide, sulfur-containing polar solvents such as sulfolane, pyridine, N-methylmorpholine, 2-picoline, 3-picoline, 4 Cyclic tertiary amines such as monopicoline and the like.
- toluene having an azeotropic composition with acetic acid (mixed) xylene, ethylbenzene, styrene, hexane, heptane, octane, a-binene, nitroethane, dioxane, pyridin, 2-picoline, 3-picoline, 4- Picolin and the like are preferred.
- xylene, octane, ethylbenzene and the like are particularly preferable in consideration of ease of handling, price, etc., which have a high azeotropic composition with acetic acid.
- organic solvents can be used alone or in combination of two or more.
- the amount of the organic solvent used for the reaction between the compound having at least two phenolic hydroxyl groups in the molecule and the sugar in which the hydroxyl group on the anomeric carbon atom is acetylated is not particularly limited. % To 70% by weight, preferably 5% to 50% by weight. If the amount is more than 50wt%, volumetric efficiency is poor and it is not economical. On the other hand, if the amount is less than 5 wt%, the viscosity of the slurry increases, and the load on stirring increases.
- the acid catalyst used for the reaction between a compound having at least two phenols in the molecule i.
- Commonly used protonic acids and Lewis acids are exemplified.
- the protic acid include mineral acids such as hydrochloric acid, hydrogen bromide, hydrogen fluoride, sulfuric acid, nitric acid, and phosphoric acid, and sulfonic acids such as methanesulfonic acid, p-toluenesulfonic acid, and trifluoromethanesulfonic acid.
- Lewis acid examples include Lewis acids such as BF3, ZnCI2, ZnCI4, FeCI3, SnCI2, SnCI4, TiCI4, SnCI4, and MgCI2. These acid catalysts can be used alone or in combination of two or more. Among acid catalysts, A Lewis acid capable of reacting under mild conditions is preferred, and BF3 is particularly preferred in terms of solubility and activity. Complexes such as an ether complex, an acetic acid complex, a methanol complex and a phenol complex exist in BF3, and these complexes can also be used.
- the amount of the acid catalyst to be used can be appropriately determined according to the catalyst used in the reaction, but usually, the phenol present in the compound having at least one phenolic hydroxyl group in the molecule is used. 2 mol 0 / o to 50 mol 0 / o, preferably 5 mol% to 40 mol 0 / o, and more preferably 10 mol% to 30 mol%, based on the number of the hydroxyl groups. If the amount is less than this range, the catalytic effect cannot be sufficiently exerted, and the reaction rate tends to be low and the conversion tends to be low. On the other hand, if the amount exceeds this range, not only the reaction rate is not improved but also the glycoside yield tends to decrease.
- the method for adding the acid catalyst is not particularly limited, and examples thereof include a method in which a predetermined amount is supplied at once at the start of the reaction, and a method in which the predetermined amount is dividedly supplied during the reaction.
- the acid catalyst may be dissolved or diluted using the above-mentioned organic solvent, and then supplied while continuously dropping.
- a suspension in which a part of the 11-o-acylated sugar such as pentaacetyl glucose is dissolved, for example, a synthetic solution of pentaacetyl glucose the acetic acid production rate is controlled at the initial stage of the reaction.
- the amount of catalyst in the reaction system before the start of the reaction is preferably suppressed to a small amount.
- the amount is 2 to 1 Omol% based on the phenolic hydroxyl groups.
- the catalyst may be divided or added all at once up to a predetermined catalyst amount.
- the reaction temperature of the reaction between a compound having at least two phenolic hydroxyl groups in the molecule and a sugar in which the hydroxyl group on the anomeric carbon atom is acetylated is not particularly limited as long as the desired product can be obtained.
- the conditions can be appropriately determined depending on the type of the starting compound of the target product, the catalyst to be used, and the organic solvent, usually from 0 ° C to 100 ° C, preferably from 20 ° C to 100 ° C.
- the temperature is 80 ° C., more preferably 30 ° C. to 60 ° C.
- the reaction is remarkably slow and is not economical.On the other hand, at a temperature higher than 100 ° C., the reaction rate is improved.
- the yield of the target glycoside tends to decrease.
- the pressure at which the compound having at least two phenolic hydroxyl groups in the molecule is reacted with the sugar in which the hydroxyl group on the anomeric carbon atom is acetylated is not particularly limited as long as the desired product can be obtained.
- a compound having at least two phenolic hydroxyl groups in a molecule and a saccharide in which a hydroxyl group on an anomeric carbon atom is acetylated is combined with an organic solvent and an acid catalyst.
- the method includes a step of performing the reaction while removing generated acetic acid from the reaction system. By adopting this step, the yield of glycoside is remarkably improved.
- the method for removing the generated acetic acid from the reaction system is not particularly limited.For example, at a predetermined temperature, while extracting acetic acid together with the used organic solvent, an appropriate amount of a solvent corresponding to the extracted solvent is appropriately added. Then, a method of adjusting the concentration of the reaction substrate to a predetermined range can be mentioned. The extraction of the solvent from the reaction system and the addition to the reaction system can be performed continuously, or an intermittent method of extracting a certain amount and then adding a certain amount can be adopted. Faster removal of acetic acid from the reaction system is preferred.When distilling acetic acid from the reaction system together with the organic solvent, if the distillation rate of the distillate is high, the azeotropic composition is likely to collapse.
- the distillation rate of the distillate depends on the type of the organic solvent, but is usually from 1 Og / hr to "Og / hr" per mol of the compound containing at least two phenolic hydroxyl groups in the molecule used. , Preferably 20 g / hr to 500 gZhr.
- the acetic acid concentration in the system during the reaction is maintained at 1.0 Owt% or less.
- a suspension in which a part of the 11-o-acylated sugar such as pentaacetylglucose is dissolved for example, a synthetic solution of pentaacetylglucose
- the initial stage of the reaction (about 3 hours from the start of the reaction) It is necessary to increase the distilling speed.
- the distillation speed is 2 to 4 times the above distillation speed.
- the two phenols present in the compound having at least two phenolic hydroxyl groups in the molecule the two oxygen atoms of the L phenolic hydroxyl group and the anomeric carbon atom of the sugar where the hydroxyl group on the anomeric carbon atom is acetylated
- a compound having two glycosidic bonds formed with it is obtained.
- the combination of a compound having at least two phenolic hydroxyl groups in the molecule and a saccharide in which the hydroxyl group on the anomeric carbon atom is acetylated results in the combination of the oxygen atom in the phenolic hydroxyl group and the sugar in which the hydroxyl group on the anomeric carbon atom is acetylated.
- Various compounds are obtained that are bonded to anomeric carbon atoms. Specific examples include a compound represented by the formula (3).
- R1 represents a hydrogen atom, a linear or branched alkyl group or alkenyl group having 1 to 10 carbon atoms, and two of R2 to R4 are acetylated.
- the group represents a hydroxyl group.
- R 1 represents a hydrogen atom, a linear or branched alkyl group or alkenyl group having 1 to 10 carbon atoms
- R 2 to R 4 each represent two of acetylated groups.
- Acetic acid is removed from at least two phenolic hydroxyl groups of such a compound having at least two phenolic hydroxyl groups in the molecule and the acetyl group of the anomeric carbon atom of the sugar in which the hydroxyl group on the anomeric carbon atom is acetylated.
- the resulting compound having at least two glycosidic bonds include, for example, di (2,3,4,6-tetra-o-acetyldarcosyl) hydroquinone, di (2,3,4,6-tetra- o-Acetyldarkosyl) resorcin, di (2,3,4,6-tetra-o-acetyldarcosyl) carbonate, 2,4-di (2,3,4,6-tetra-o-) Acetyldarcosyl) monoresorcinic acid, 2, 4-dihydroxyben 1,2-dialdehyde (2,3,4,6-tetra-o-acetylglucoside), 2,4-dihydroxyacetophenone-1,4-di (2,3,4,6- Tetra o-acetyl glucoside), 1,3-bis [2- (2,3,4,6-tetra-o-acetyl darcos oxy) -1-4-hydroxyphenyl] propane, 1,3-bis [2-Hydroxy
- the present inventors have prepared the above-mentioned method using gallic acid methyl ester, a compound having at least two phenolic hydroxyl groups in the molecule, and pentaacetyl glucose, a sugar in which the hydroxyl group on the anomeric carbon atom is acetylated. It was found that when the above reaction was carried out, gallic acid methyl ester 1,3,5-bis (2,3,4,6-tetraacetylglucoside) was obtained as the main product.
- the production method of the present invention comprises the steps of: converting a compound represented by the formula (2) to a hydroxyl group at the 3-position and the 5-position of the compound represented by the formula (2); a monosaccharide such as glucose or galactose; It is useful as a method for obtaining a glycoside in which a anomeric carbon atom of a sugar such as a disaccharide or an oligosaccharide is bonded by a glycosidic bond.
- a compound obtained by the above reaction and having at least two phenolic hydroxyl groups in the molecule a phenolic hydroxyl group and an acetyl group on the anomeric carbon atom of a sugar in which the hydroxyl group on the anomeric carbon atom is acetylated.
- the compound having at least two glycosidic bonds from which acetic acid has been removed usually precipitates crystals by cooling the reaction mixture, and can be recovered by a solid-liquid separation operation such as filtration and centrifugation. Crystals may not be precipitated by cooling alone, but in such a case, crystals can be precipitated by adding a solvent that is hardly soluble (a so-called poor solvent).
- a protecting group for protecting the hydroxyl group on the sugar moiety of the compound When an acetyl group or a benzoyl group is present, a so-called glycoside can be obtained by removing these protecting groups.
- An acetyl group or a benzoyl group present in the compound can be easily eliminated under basic conditions.
- the elimination of these groups is carried out by adding sodium methyl methanol, sodium ethylate Z ethanol, sodium hydroxide Z water, potassium hydroxide Z water, sodium hydroxide Z methanol water, potassium hydroxide no methanol water.
- sodium hydroxide / methanol water it is preferable to use sodium hydroxide / methanol water from the viewpoint of solubility and economy of glycosides.
- methanol water methanol water containing 20% to 90% by weight of methanol is used.
- Glycosides obtained by the production method of the present invention are usually obtained by cooling the reaction mixture obtained by performing the above elimination reaction of the protecting group, whereby crystals of the glycosides are precipitated.
- the glycoside can be recovered by a solid-liquid separation operation such as centrifugation. Crystals of glycosides may not be precipitated by cooling alone, but in such a case, crystals of glycosides can be precipitated by adding a solvent that does not easily dissolve glycosides.
- gallic acid-1,3,5-didacoside, methyl gallate-3,5-didacoside, ethylethyl gallate-3,5-didacoside, propyl gallate 3 5,5-Diglucoside
- gallic acid-1,3,5-dimaltoside methyl gallate 3,5-dimaltoside
- gallate acid 3,5-dimaltoside propyl gallate 3,5, -dimaltoside
- gallic acid-3, 5-Digalactoside, methyl gallate-3,5-digalactosyl gallate-3,5-digalactoside, propyl gallate 3,5, -digalactoside, etc. are useful compounds having whitening and antioxidant effects. .
- gallic acid 1,3,5-diglucoside methyl gallate 1,3,5-didacoside
- gallic acid 3,5-didarcoside propyl gallate 3,5-didacoside
- gallic acid 1,3,5 —Dimaltoside methyl gallate-3,5-Dimaltoside, ethyl gallate
- 3,5-Dimaltoside, propyl gallate 3,5-Dimaltoside, gallic acid-3,5-digalactomethyl gallate 3,5-digalactosyl gallate 3,5-digalactoside, propyl gallate 3 , 5-Digalactoside, etc. are useful compounds for cosmetics and hair treatment.
- the glycoside obtained by the production method of the present invention may be dried as it is, or may be further deprotected or derivatized if necessary.
- an alkyl ester of a gallic acid skeleton can be deprotected by subjecting it to basic or acidic conditions.
- sodium methanol methanol, sodium ethanol Z ethanol, sodium hydroxide Z water, potassium hydroxide / water, sodium hydroxide methanol water, potassium hydroxide methanol water, sulfuric acid water, hydrochloric acid water and the like are used.
- the glycoside After deprotection of the glycoside obtained by glycosylation according to the present invention, the glycoside can be isolated by a solid-liquid separation operation after being concentrated and cooled for crystallization. Inorganic substances by-produced in the deprotection can be removed by operations such as recrystallization and ion exchange.
- Sample preparation The reaction mass was sampled into a 10-ml volumetric flask, and acetic anhydride was added.
- Methyl gallate (hereinafter abbreviated as "GM") 36.8 g (0.2 mol), pentaacetyl--1D-glucose (hereinafter abbreviated as “one PAGJ”) 226.4 g (0.58 mol), mixed 530 g of xylene was charged, 4.4 g (15 mol% ZGM) of BF3'-Jetyl ether complex was added, and the reaction was carried out at 43-47 ° CZ 4.0-3.6 KPa (30-27 mmHg) for 16 hours. The distillate was continuously withdrawn, and the total amount after 16 hours was 440 g, of which 20.8 g was acetic acid, while the additional xylene was added.
- GM Methyl gallate
- one PAGJ pentaacetyl--1D-glucose
- the reaction was carried out at 7 ° C./4.0 to 3.6 KPa (30 to 27 mmHg) for 16 hours, and after adding 7.45 g of BF3′-ethylethyl complex, the reaction was further performed for 2 hours. Distillate is continuously withdrawn, 1 The amount of g after 8 hours was 1500 g. On the other hand, additional xylene was added at 509.4 g at 6 hr and 247.9 g at 12 hr. As a result of analyzing the mass after completion of the reaction, the reaction yield of methyl-bis-bis (2,3,4,6-d-tra-o-acetyldarcoside) was 87.1% / GM.
- the selected crystals were collected by filtration, and the collected crystals were washed twice with 228 g of 70% by weight methanol water, and wetted with methyl didarcoside gallate gallate. 343.7 g were obtained.
- the wet body was dissolved in 215 g of water, heated to 60, and then hydrolyzed with 21.3 g of 49% NaOH (0.26 mol) dropwise over 2 hours to hydrolyze the methyl ester. further methanol was distilled off while raising the temperature, gallic monobasic 3, to obtain an aqueous solution 570 ⁇ O g of 5-diglucoside '2Na salt.
- the concentration of gallic acid 1,3,5-diglucoside '2Na was 22.2 wt%. Water was added to the solution to adjust the concentration of gallic acid mono-3,5-diglucoside '2Na to 5.4 wt%, and the column was packed with a strongly acidic ion exchange resin (Levatit type-S) in which Na ions were exchanged for hydrogen ions. The solution was concentrated under reduced pressure at 60 ° C to a concentration of 1,3,5-diglucoside of gallic acid of 35%, cooled to 5 ° C, and kept at the same temperature for 2 hours.
- a strongly acidic ion exchange resin Levatit type-S
- the precipitated crystals were filtered, washed with water, and dried (75 ° C) to obtain 92.8 g of white crystals of gallic acid-1,3,5-diglucoside. Purity 96.2. /. The purity conversion yield was 72.2% GM.
- Ethyl gallate (hereinafter, abbreviated as "GEJ") was charged with 39.6 g (0.2 mol), j8-PAG 226.4 g (0.58 mol), and mixed xylene 530 g, and BF3 'jetisoleatele complex 4, 4g (15 mol% / GM) and the reaction was carried out at 43 to 47 ° CZ 4.0 to 3.6 KPa (30 to 27 mmHg). After 10 hours, the reaction mass was analyzed. As a result, the yield of methyl gallate-3,5-bis (2,3,4,6-tetra-o-acetylglucoside) was found to be 80.5% ZGE. The acetic acid concentration in the reaction system during the reaction was 0.70 to 0.74 wt%.
- 83 g (15 mol% / GM) was added, and the reaction was carried out at 43 to 47 ° CZ 4.0 to 3.6 KPa (30 to 27 mmHg) for 16 hours. After 12 hours on the way, 1.32 g of BF3 ′ acetate complex was added.
- the reaction yield of methyl gallate-3,5-bis (2,3,4,6-tetra-o-acetylglucoside) was 90.5% GM.
- the acetic acid concentration in the reaction system during this reaction was 0.41 to 0.49 wt%.
- the precipitated crystals were collected by filtration, washed twice with 78 g of xylene, and dried (60 ° CZ12 hours) Was carried out to obtain 211.8 g of crystals of methyl gallate-3,5-bis (2,3,4,6-tetra-o-acetyldarcoside).
- the purity was 95.4%, and the yield in terms of purity was 84.5% ZGM.
- Example 2 Thereafter, the same operation as in Example 2 was performed, and finally 100 g of white crystals of gallic acid 1,3,5, didarcoside were obtained. The purity was 96.9% and the yield in terms of purity was 69.2%.
- HQ Hydroquinone 1 1.03 g (0.1 mol), ⁇ -PAG1 17.1 g (0.3 mol), mixed xylene 150 g were charged, and BF3 'getyl ether complex 2.1 g ( 15 mol% ZHQ) was added, and the reaction was carried out at 43 to 47 ° CZ 4.0 to 3.6 KPa (30 to 27 mmHg) for 12 hours.
- the yield of hydroquinone 1,4-bis (2,3,4,5-tetraethyl o-acetyl dalcoside) was 89.0% / HQ
- the hydroquinone mono (2, 3,4,5- (Toler o-acetyl glucoside) was 10.0% ZHQ
- the raw material HQ was 1.0%.
- the concentration of acetic acid in the reaction system during the reaction was 0.45 to 0.50 wt%.
- the reaction yield of —bis (2,3,4,6-tetra-o-acetyldarcoside) was 32.7%.
- C In the reaction mixture, 7.1% of GM was charged, Methyl acid 3 -— (2, 3, 4, 6-tetra-o-acetyldarcoside) contained 45% GM.
- the concentration of acetic acid in the reaction system during the reaction was 1.2 to 1.5 wt%.
- the same operation as in the example was performed except that the distillate extraction speed was reduced to about half (that is, the total amount was 240 g in 16 hours).
- the reaction yield of methyl-bis-gallate (2,3,4,6-tetraethyl o-acetyltylcoside) was 61.5% ZGM
- methyl-monogallate (2,3,3) 4, 6-tetra-o-acetyldarcoside) power was 35% / GM.
- the acetic acid concentration in the reaction system during the reaction was 1.21 to 1.25 wt%.
- a glycoside in which at least two phenolic hydroxyl groups and each anomeric carbon atom of at least two sugars are bound by a glycosidic bond is used.
- a method for obtaining a high yield can be provided.
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Abstract
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Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004521185A JP4393998B2 (ja) | 2002-07-11 | 2003-07-11 | 配糖体の製造方法 |
| EP03764170.1A EP1544207B1 (en) | 2002-07-11 | 2003-07-11 | Process for producing glycoside |
| US10/518,640 US7622563B2 (en) | 2002-07-11 | 2003-07-11 | Process for producing glycoside |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002202420 | 2002-07-11 | ||
| JP2002-202420 | 2002-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004007516A1 true WO2004007516A1 (ja) | 2004-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2003/008820 Ceased WO2004007516A1 (ja) | 2002-07-11 | 2003-07-11 | 配糖体の製造方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7622563B2 (ja) |
| EP (1) | EP1544207B1 (ja) |
| JP (1) | JP4393998B2 (ja) |
| CN (1) | CN100351262C (ja) |
| WO (1) | WO2004007516A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004123699A (ja) * | 2002-08-01 | 2004-04-22 | Mitsubishi Chemicals Corp | ジグリコシル化没食子酸誘導体の製造方法 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007146766A (ja) * | 2005-11-29 | 2007-06-14 | Noboru Shoda | 熱サイクル装置及び複合熱サイクル発電装置 |
| EP1867729A1 (en) * | 2006-06-14 | 2007-12-19 | Libragen | Water soluble phenolics derivatives with dermocosmetic and therapeutic applications |
| CN103159805A (zh) * | 2011-12-14 | 2013-06-19 | 南京华狮化工有限公司 | 一种α-熊果苷的合成方法 |
| CN103923133B (zh) * | 2014-01-17 | 2016-08-31 | 大兴安岭林格贝寒带生物科技股份有限公司 | 一种制备α-熊果苷的方法 |
| CN104072549B (zh) * | 2014-07-11 | 2016-03-09 | 江苏汉斯通药业有限公司 | 天麻素的生产工艺 |
| FR3024981B1 (fr) | 2014-08-22 | 2016-09-09 | Univ Montpellier 2 Sciences Et Techniques | Derives polyesters d'acides gras de polyglycosides |
| CN107497474B (zh) * | 2017-08-31 | 2021-03-09 | 扬州工业职业技术学院 | 一种用于合成没食子酸丙酯的沸石催化剂 |
| CN113150040A (zh) * | 2021-03-31 | 2021-07-23 | 江南大学 | 一种化学合成美白剂二葡糖基没食子酸的制备方法 |
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| JPS62263194A (ja) * | 1986-05-09 | 1987-11-16 | Nippon Seika Kk | テトラアセチルアルブチンの製造法 |
| JPS62263195A (ja) * | 1986-05-09 | 1987-11-16 | Nippon Seika Kk | ペンタアセチルアルブチンの製造法 |
| JPS63145213A (ja) * | 1986-12-08 | 1988-06-17 | Kanebo Ltd | ポリフエノ−ルの変色防止方法 |
| JPH01249796A (ja) * | 1988-03-30 | 1989-10-05 | Nippon Fine Chem Co Ltd | フェノールグリコシド類の製造法 |
| JPH0551394A (ja) * | 1991-08-22 | 1993-03-02 | Yoshitomi Pharmaceut Ind Ltd | β−フエニルグリコシドの製造法 |
| JPH06239716A (ja) * | 1993-02-17 | 1994-08-30 | Kanebo Ltd | ポリフェノール化合物含有組成物 |
| JP2000314084A (ja) * | 1999-04-30 | 2000-11-14 | Lion Corp | 弾力性付与剤 |
| JP2000319116A (ja) * | 1999-04-30 | 2000-11-21 | Lion Corp | 安定化された没食子酸誘導体及びそれを含有する外用剤組成物 |
| JP2002193990A (ja) * | 2000-12-25 | 2002-07-10 | Mitsui Chemicals Inc | ハイドロカルコン配糖体および該配糖体を有効成分として配合した化粧料 |
-
2003
- 2003-07-11 EP EP03764170.1A patent/EP1544207B1/en not_active Expired - Lifetime
- 2003-07-11 US US10/518,640 patent/US7622563B2/en not_active Expired - Lifetime
- 2003-07-11 CN CNB038165465A patent/CN100351262C/zh not_active Expired - Lifetime
- 2003-07-11 WO PCT/JP2003/008820 patent/WO2004007516A1/ja not_active Ceased
- 2003-07-11 JP JP2004521185A patent/JP4393998B2/ja not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62263194A (ja) * | 1986-05-09 | 1987-11-16 | Nippon Seika Kk | テトラアセチルアルブチンの製造法 |
| JPS62263195A (ja) * | 1986-05-09 | 1987-11-16 | Nippon Seika Kk | ペンタアセチルアルブチンの製造法 |
| JPS63145213A (ja) * | 1986-12-08 | 1988-06-17 | Kanebo Ltd | ポリフエノ−ルの変色防止方法 |
| JPH01249796A (ja) * | 1988-03-30 | 1989-10-05 | Nippon Fine Chem Co Ltd | フェノールグリコシド類の製造法 |
| JPH0551394A (ja) * | 1991-08-22 | 1993-03-02 | Yoshitomi Pharmaceut Ind Ltd | β−フエニルグリコシドの製造法 |
| JPH06239716A (ja) * | 1993-02-17 | 1994-08-30 | Kanebo Ltd | ポリフェノール化合物含有組成物 |
| JP2000314084A (ja) * | 1999-04-30 | 2000-11-14 | Lion Corp | 弾力性付与剤 |
| JP2000319116A (ja) * | 1999-04-30 | 2000-11-21 | Lion Corp | 安定化された没食子酸誘導体及びそれを含有する外用剤組成物 |
| JP2002193990A (ja) * | 2000-12-25 | 2002-07-10 | Mitsui Chemicals Inc | ハイドロカルコン配糖体および該配糖体を有効成分として配合した化粧料 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004123699A (ja) * | 2002-08-01 | 2004-04-22 | Mitsubishi Chemicals Corp | ジグリコシル化没食子酸誘導体の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4393998B2 (ja) | 2010-01-06 |
| EP1544207A4 (en) | 2007-10-24 |
| EP1544207B1 (en) | 2014-04-02 |
| CN1668627A (zh) | 2005-09-14 |
| CN100351262C (zh) | 2007-11-28 |
| US7622563B2 (en) | 2009-11-24 |
| EP1544207A1 (en) | 2005-06-22 |
| JPWO2004007516A1 (ja) | 2005-11-10 |
| US20050272921A1 (en) | 2005-12-08 |
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