WO2004058984A1 - 糖鎖アスパラギン誘導体、糖鎖アスパラギンおよび糖鎖ならびにそれらの製造法 - Google Patents
糖鎖アスパラギン誘導体、糖鎖アスパラギンおよび糖鎖ならびにそれらの製造法 Download PDFInfo
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- WO2004058984A1 WO2004058984A1 PCT/JP2003/016523 JP0316523W WO2004058984A1 WO 2004058984 A1 WO2004058984 A1 WO 2004058984A1 JP 0316523 W JP0316523 W JP 0316523W WO 2004058984 A1 WO2004058984 A1 WO 2004058984A1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/26—Preparation of nitrogen-containing carbohydrates
- C12P19/28—N-glycosides
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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
Definitions
- Asparagine sugar chain derivative asparagine sugar chain and sugar chain, and methods for producing them
- the present invention relates to a sugar chain asparagine derivative, sugar chain asparagine and sugar chain, and a method for producing them.
- the present invention also relates to a sugar chain asparagine derivative containing fucose and a method for producing the same.
- Sugar chains are monosaccharide sequences, bonding styles, sites, chain lengths, branching styles, and overall higher-order structure. Due to its diversity, it is a very complex structure compared to the structure of nucleic acids and proteins. Therefore, the biological information derived from its structure is more diverse than nucleic acids and proteins. Despite the recognition of the importance of research on sugar chains, the progress of research is slower than that of nucleic acids and proteins due to the complexity and diversity of their structures. As described above, most of the proteins existing on the cell membrane surface, serum, and the like have sugar chains attached thereto. Molecules in which sugar chains are covalently linked to proteins are called glycoproteins, and can be divided into two groups based on the difference in the binding between sugar and protein.
- One is an asparagine-linked sugar chain (N-glycoside-linked type) in which a sugar chain is linked to an amino group in the side chain of asparagine (A sn).
- the other is a mucin-linked sugar chain in which a sugar chain is linked to the alcohol of serine (Ser) and threonine (T hr) ( ⁇ -glycoside-linked).
- All asparagine-linked sugar chains have a basic skeleton consisting of five sugar residues and are classified into high-mannose, complex, and hybrid subgroups depending on the type of sugar residue at the non-reducing end of the sugar chain to be linked. Is done.
- mucin-linked sugar chains are classified into four groups based on differences in the basic skeleton (core).
- sugar chains are important compounds, but there is a shortage of absolute sugar chains.
- As a means for obtaining a sugar chain there is a method of releasing only a sugar chain from a glycoprotein existing in a living body.
- it is difficult to cut out a large amount of sugar chains from glycoproteins and there are many sugar chains with very similar structures in living organisms, and it is difficult to obtain only a single sugar chain in large quantities.
- An object of the present invention is to provide a novel asparagine sugar chain derivative containing at least one or more sialic acids or sialic acid derivatives at the non-reducing end, and a method for producing the same.
- Another object of the present invention is to provide a novel asparagine sugar chain containing at least one or more sialic acid or a sialic acid derivative at a non-reducing end, and a method for producing the same.
- Another object of the present invention is to provide at least one or more sialic acids or the induction of sialic acids. It is an object of the present invention to provide a novel sugar chain containing a compound at the non-reducing end and a method for producing the same.
- the present invention relates to the following inventions.
- R 2 is a group represented by the formula (2)
- R x is a group represented by the following formula (7). :].
- the present inventor has previously disclosed in Japanese Patent Application No. 2001-185685 (hereinafter referred to as the prior application) various kinds of isolated asparagine-linked oligosaccharide derivatives which can be obtained much more easily and in large amounts than in the past.
- Asparagine-linked oligosaccharides, asparagine-linked oligosaccharides, a method for producing sugar chains, and novel asparagine-linked asparagine derivatives, asparagine-linked oligosaccharides, and sugar chains having sugar chains with arbitrarily deleted sugar residues have been developed.
- a method for producing a sugar chain asparagine derivative derived from sugar chain asparagine A method for producing a sugar chain asparagine derivative derived from sugar chain asparagine,
- step (a) Introduces an Fmoc group into a asparagine containing one or more asparagine having a sialic acid residue at a non-reducing end, and introduces a benzyl group into the sialic acid residue.
- the method of producing a sugar chain asparagine derivative according to any one of the above (1) to (3) which comprises introducing the sugar chain asparagine derivative mixture.
- step (b ′) a step of hydrolyzing the asparagine derivative isolated in step (b) using a sugar hydrolase, and / or
- the mixture containing one or more kinds of asparagine sugar chains contains a compound of the following formula (A) and / or a compound in which one or more sugar residues are deleted from the compound.
- A the formula for producing the glycan asparagine according to (7) Law
- step (10) In the step (a), an Fmoc group is introduced into the sugar chain asparagine contained in a mixture containing one or more kinds of sugar chain asparagine having a sialic acid residue at a non-reducing terminal; and
- the method for producing the asparagine derivative of the glycan of the prior application is, for example, asparagine glycan derived from a natural glycoprotein, preferably asparagine obtained from an asparagine-linked glycan.
- Asparagine sugar chain refers to a sugar chain to which asparagine is bound.
- Asparagine-linked sugar chain refers to a group of sugar chains in which N-acetyldarcosamine present at the reducing end is linked to an N-glycosidic acid amino group of asparagine (As n) in a protein polypeptide.
- G1cNac refers to a group of sugar chains having a mother nucleus.
- the “sugar chain asparagine derivative” refers to a sugar chain asparagine in which a fat-soluble protecting group is bonded to an asparagine residue.
- a c HN represents an acetoamide group.
- a sugar chain derived from a natural glycoprotein is a mixture of sugar chains in which sugar residues at non-reducing terminals are randomly deleted.
- the present inventors surprisingly introduced a fat-soluble protecting group into a sugar chain derived from a natural glycoprotein, specifically, the sugar chain asparagine contained in a mixture of sugar chains asparagine, whereby It has been found that a mixture of asparagine derivatives having a protective group introduced therein can be easily separated into individual asparagine derivatives using a known chromatography technique. As a result, it has become possible to prepare large amounts of asparagine-linked sugar chains having various structures.
- sugar chain asparagine derivatives having similar structures, which were conventionally difficult to separate, and each of these compounds can be prepared easily and in large quantities.
- various sugar chain asparagine derivatives can be synthesized based on the obtained sugar chain asparagine derivative, for example, by successively acting a sugar hydrolase to remove sugar residues.
- sugar chain asparagine derivative sugar chain asparagine and All the sugar chains were of the a 2, 6 conjugate.
- any of the novel ⁇ 2,3 conjugated sugar chain asparagine derivative, sugar chain asparagine and sugar chain, and ⁇ ; 2,6 conjugated product which further contain fluorine, which are not described in the prior application, are novel.
- a sugar chain asparagine derivative, a sugar chain asparagine and a sugar chain are obtained.
- influenza virus recognizes a sugar chain having sialic acid as a terminal as a receptor.
- human and avian influenza viruses have different receptor specificities. The former specifically recognizes a sugar chain in which sialic acid is a2,6 linked to galactose, and the latter specifically recognizes a sugar chain in which sialic acid is a2,3 linked to galactose. It is known that the difference in the binding mode between sialic acid and galactose and also the difference in sialic acid play a significant role in limiting the host range of influenza virus. '
- the present invention thus relates to a novel asparagine sugar chain derivative, asparagine and sugar chain, and a method for producing the same, which are not described in the prior application.
- the obtained 9 to 7 sugar chain asparagine derivative having sialic acid or a sialic acid derivative is obtained by subjecting the obtained disia mouth sugar chain asparagine derivative and two kinds of monosial sugar chain asparagine derivative to sugar hydrolysis.
- the above-mentioned 11 to 7 asparagine glycan derivative and asparagine disia mouth sugar chain (2,6-11 saccharide-1 Asn-Fmoc) are used as starting materials to carry out sugar hydrolysis.
- fucose By transferring fucose to the obtained 10-6 sugar chain asparagine derivative by glycosyltransferase, a 13-7 sugar chain asparagine derivative containing fucose can be obtained.
- the protective group is not particularly limited, and may be, for example, a carbonate group such as an Fmoc group, a t-butyloxycarbonyl (Boc) group, a benzyl group, an aryl group, an aryloxy group, an acetyl group, or the like.
- Amide-based protecting groups and the like can be used.
- the protecting group is preferably an Fmoc group or a Boc group, and more preferably an Fmoc group, from the viewpoint that the obtained asparagine-linked oligosaccharide derivative can be used immediately for synthesis of a desired glycopeptide.
- the Fmoc group is particularly effective when a sugar that is unstable to relatively acidic conditions such as sialic acid is present in the sugar chain.
- the introduction of the protecting group may be carried out according to a known method (for example, see Protecting groups in Organic chemistry, John Wiley & Sons INC., New York 1991, ISBN 0-471-62301-6).
- an appropriate amount of acetone is added to asparagine sugar chain, and furthermore, 9-fluorenylmethyl-N-succinimidelka 1-ponate and sodium hydrogen carbonate are added and dissolved, and asparagine is added at 25 ° C.
- the asparagine residue of the glycan mo c groups can be introduced.
- a sugar chain asparagine derivative into which a lipophilic protecting group is introduced can be obtained.
- sialic acid commercially available sialic acid or chemically synthesized sialic acid can be used.
- sialic acid derivative a commercially available sialic acid derivative or a chemically synthesized one can be used. Specifically, there can be mentioned sialic acid in which the hydroxyl group bonded to the 7-, 8- or 9-position carbon is replaced by a hydrogen atom or a halogen atom. Examples of the halogen atom include fluorine, chlorine, and bromine, but fluorine is preferred.
- sialyltransferase commercially available ones, naturally-occurring ones, and ones produced by gene recombination can be used, and are appropriately determined depending on the type of sialic acid or sialic acid derivative to be transferred. You can choose. Specific examples include those derived from RatRecombinant, which is a 2,3 transferase, and those derived from RatLiver, which is an o, 2,6 transferase. Alternatively, sialic acid or a derivative of sialic acid may be transferred by shifting the equilibrium by adjusting the pH using sialidase.
- the reaction solution obtained after the reaction may be subjected to chromatography to obtain each sugar chain asparagine derivative.
- Removal of the N-acetyldarcosamine residue is accomplished by dissolving the compound to be hydrolyzed in a buffer solution (for example, a phosphate buffer solution, an acetate buffer solution, a good buffer solution, etc.) and subjecting the compound to a known method under known conditions.
- a buffer solution for example, a phosphate buffer solution, an acetate buffer solution, a good buffer solution, etc.
- the reaction solution obtained after the reaction may be subjected to chromatography to obtain each sugar chain asparagine derivative.
- separation is performed by HPLC (ODS column, developing solvent is a buffer solution such as ammonium acetate of about 10 to 20 OmM and acetonitrile, or ethanol, or methanol, or butanol, or propanol.
- a fat-soluble water-soluble organic solvent such as the above can be appropriately mixed and used.
- fucose is transferred to the non-reducing terminal side of the asparagine in which the amino group nitrogen of asparagine is protected by the lipophilic protecting group of the present invention. It is possible to produce a novel asparagine sugar chain derivative containing at least one or more fucose in N-acetyldarcosamine.
- fucose transferase commercially available ones, naturally occurring ones, and ones produced by gene recombination can be used, and can be appropriately selected depending on the type of fucose to be transferred. Specifically, it is an enzyme that transfers fucose to N-acetyldarcosamine on the non-reducing terminal side of asparagine glycan
- Fucosyl transferase V Human, Recominant, from plasma, from serum, from milk, from liver
- fucose may be transferred by shifting the equilibrium by pH adjustment or the like using fucose hydrolase.
- the above-mentioned asparagine-linked oligosaccharide derivative can be separated by chromatography, if necessary, by using known chromatography alone or in combination.
- the derivative is further hydrolyzed using various sugar hydrolases and the like to remove saccharide residues at the non-reducing terminal of the glycan, thereby obtaining, for example, saccharides.
- various asparagine-derived sugar chain derivatives having heterogeneous branched structures at the chain ends can be obtained as single compounds. Further, by using various sugar hydrolyzing enzymes and changing the order of hydrolysis and the type of hydrolysis, it is possible to produce more types of asparagine-linked sugar chain derivatives.
- the protecting group is an Fmoc group
- the asparagine derivatives of the sugar chains of formulas (14) to (16) and (19) to (21) are obtained alone or in the form of a mixture. be able to.
- the present invention also provides a method for producing sugar chain asparagine from which various isolated sugar chain asparagine can be obtained in large quantities.
- the method includes a step of producing a sugar chain asparagine derivative according to the method for producing a sugar chain asparagine derivative, and further a step of removing a protecting group from the obtained sugar chain asparagine derivative.
- the removal of the protecting group from the asparagine derivative of a sugar chain can be carried out according to a known method (for example, Protecting groups in Organic chemistries, John Wiley & Sons INC., New York 1991, ISBN 0-471-62301- 6).
- the protecting group is an F moc group
- the sugar chain in N, N-dimethylformamide (DMF)
- DMF N, N-dimethylformamide
- the Boc group can be removed by reacting with a weak acid.
- asparagine sugar chains of formulas (8) and (9) can be obtained alone or in the form of a mixture.
- the present invention provides a method for producing a sugar chain from which various isolated sugar chains can be obtained in a large amount.
- the method includes a step of producing asparagine-linked oligosaccharides according to the method of producing asparagine-linked oligosaccharides, and further includes a step of removing asparagine residues from the obtained asparagine-linked oligosaccharides.
- Asparagine residues can be removed from the asparagine sugar chain by a known method.
- a sugar chain can be obtained by reacting asparagine sugar chain with anhydrous hydrazine and then acetylating to remove the asparagine residue.
- the asparagine residue can be removed by heating the asparagine sugar chain to reflux with a basic aqueous solution and then acetylating the sugar chain to obtain the saccharide chain.
- the product may be purified by a known method, for example, various chromatography using a gel filtration column, an ion exchange column, or the like, or a method of separation by HPLC.
- a sugar chain asparagine derivative having a desired sugar chain structure, a sugar chain asparagine and a sugar chain (hereinafter, three may be collectively referred to as sugar chains) can be produced inexpensively and efficiently. Can be manufactured in large quantities. ⁇
- sugar chains are very useful in fields such as drug development.
- applications in drug development include, for example, cancer vaccine synthesis. It is known that when cells become cancerous, sugar chains not found in the body are expressed. It is also known that when the sugar chain is chemically synthesized and administered to an individual as a vaccine, cancer growth is suppressed. Therefore, if a desired sugar chain can be produced by the present invention, it is possible to synthesize a vaccine effective for treating cancer.
- the sugar chains obtained according to the present invention are further derivatized by combining a new sugar residue with a combination of a chemical reaction and a reaction with a glycosyltransferase to synthesize a new peptide. It is also possible to do.
- the physical data of the obtained sugar chain mixture is as follows.
- Ne uAc Sialic acid Gal: D—galact 1 ⁇ GlcNAc: N— cetyldarcosamine Man: D— mannose As n: Asparagine Show
- Table 2 shows a simplified structure of Compound 11.
- Table 2 shows a simplified structure of Compound 12.
- Table 2 shows a simplified structure of Compound 16.
- HPLC high-performance liquid chromatography
- This aqueous solution was purified by gel column chromatography (developing solvent: 2 OmM ammonia water, flow rate: 0.3 ml Zmin) using Sepadex G-15 (1.8 ⁇ 90 ⁇ ), and CMP-sialic acid was purified. Obtained.
- CMP-sialic acid was transferred to asparagine-linked asparagine in which the amino group nitrogen of asparagine was protected with the Fmoc group obtained in Reference Example 3 using sialyltransferase.
- sialyltransferase those derived from commercially available Rat and Recombinant which are 2,3 transferases were used.
- the compound (C 1-2) (2 mg, 0.88 ⁇ , ⁇ 1) obtained in Example 1 and lmg of serum albumin were dissolved in 100 ⁇ 1 of HEPES buffer solution (5 OmM, pH 5.0) 100 ⁇ 1 Then, / 3-galactosidase (Seikagaku Kogyo Co., Ltd., from Jack Beans, 5 L, lO OmU) was added. The solution was allowed to stand at 37 ° C for 15 hours, and then filtered with a membrane filter.
- the filtrate was HPLC (ODS column, 2.0 ci) x 25 cm, and the developing solvent was 50 mM ammonium acetate aqueous solution: acetone
- the solvent was concentrated and then lyophilized.
- the residue was dissolved in water 200 1 ODS force Ramukuro Mato chromatography (Cosmosil 7 5 C 18 - opn, performs first washed with water, eluted with following Ide 25% Asetonitoriru solution) desalted using As a result, 0.5 / X g of the desired compound (C2) was obtained.
- the NMR data is as follows.
- Example 2 Compound (C 2) (1.8 mg, 0.86 no 1) obtained in Example 2 was dissolved in HEPES buffer solution (50 mM, pH 5.0) 90 H 1 together with 1 mg of serum albumin, and further dissolved. 4 zl (250 mU) of N-acetyl-l-dalcosaminidase (Fram Jack Beans, manufactured by Sigma-Aldrich) was added. The solution was allowed to stand at 37 ° C. for 24 hours, and then filtered with a membrane filter.
- HEPES buffer solution 50 mM, pH 5.0
- 4 zl (250 mU) of N-acetyl-l-dalcosaminidase Fr Jack Beans, manufactured by Sigma-Aldrich
- the compound (C1-3) (lmg, 0.44 xmol) obtained in Example 1 and lmg of serum serum albumin were added to HEPE S buffer solution (50 mM, pH 5.0) 50 / il. After dissolving, jS-galactosidase (Seomikagaku Kogyo Co., Ltd., frrom JackBeans, 5 ⁇ L, lO OmU) was added. The solution was allowed to stand at 37 ° C. for 15 hours, and then filtered with a membrane filter.
- Example 6 Compound (C 5) (1.Omg, 0.48 ⁇ mo 1) obtained in Example 5 was dissolved in HEPE S buffer solution (5 OmM, pH 5.0) 501 together with lmg of serum albumin, and Further, 4 / zl (250 mU) of ⁇ -acetyl- / 3-darcosaminidase (produced by Sigma-Aldrich, from Jack Beans) was added. The solution was allowed to stand at 37 ° C. for 22 hours, and then filtered with a membrane filter.
- HEPE S buffer solution 5 OmM, pH 5.0
- 4 / zl (250 mU) of ⁇ -acetyl- / 3-darcosaminidase produced by Sigma-Aldrich, from Jack Beans
- the compound (C 6) (1. Omg ', 0.53 ⁇ mo 1) obtained in Example 6 and lmg of serum albumin dissolved in HEPE S buffer solution (5 OmM, pH 5.0) 501
- HEPE S buffer solution 5 OmM, pH 5.0
- One mannosidase Sigma Aldrich, from Jack Bean s 101 (0.9 U) was added.
- the solution was allowed to stand at 37 ° C for 20 hours, and then filtered with a membrane filter.
- CMP-sialic acid was transferred to asparagine asparagine (compound 2) obtained by protecting the amino group nitrogen of asparagine with the Fmoc group obtained in Reference Example 3 using sialyltransferase.
- sialyltransferase those derived from commercially available Rat and Recombinant which are a few transferases were used.
- CMP-sialic acid was transferred to asparagine asparagine (compound 3) obtained by protecting the amino group nitrogen of asparagine with the Fmoc group obtained in Reference Example 3 using a sialyltransferase.
- sialyltransferases those derived from commercially available Rat and Recombinant, which are 2,3 transferases, were used.
- Example 8 In the same manner as in Example 1 except that the CMP-7 "-deoxy-7" -fluoro-sialic acid obtained in Reference Example 8 was used, the amino group nitrogen of asparagine was protected with the Fmoc group shown below. "—Doxy-7” —Fluorosialo ⁇ 2,3 sugar chain Asparagine and two mono 7-protected amino nitrogens of Asparagine with Fmoc group Obtained.
- the desired compound (C9) was obtained in the same manner as in Example 2 except that the compound (C8-2) obtained in Example 8 was used instead of the compound (C12) of Example 2. Was done.
- the desired compound (C12) was obtained in the same manner as in Example 5 except that the compound (C8-3) obtained in Example 8 was used instead of the compound (CI-13) of Example 5. Was.
- the desired compound (C13) was obtained in the same manner as in Example 6, except that the compound (C12) obtained in Example 12 was used instead of the compound (C5) in Example 6.
- Example 18 (mannose hydrolase of Example 17)
- Example 21 (mannose hydrolase of Example 20)
- Example 22 Di9 "-deprotected amino group nitrogen of asparagine with Fmoc group Xi 9 "monofluorosialo c3 ⁇ 42,3 sugar chain Asparagine (C22-1) and two mono 9” —deoxy-9 "monofluoroscialo ⁇ 2,3 sugar chains with the amino nitrogen of asparagine protected by Fmo c group Synthesis of Asparagine (C 22-2 and C 22-3)
- the desired compound (C24) was obtained in the same manner as in Example 3 except that the compound (C23) obtained in Example 23 was used instead of the compound (C2) in Example 3.
- Example 25 (mannose hydrolase of Example 24)
- the desired compound (C26) was obtained in the same manner as in Example 5, except that the compound (C22-13) obtained in Example 22 was used instead of the compound (C13) of Example 5. Was done.
- Example 27 The desired compound (C 27) was obtained in the same manner as in Example 6, except that the compound (C 26) obtained in Example 26 was used instead of the compound (C 5) in Example 6.
- Example 28 (mannose hydrolase of Example 27)
- Example 27 The compound (C 27) obtained in Example 27 was replaced with the compound (C 27) obtained in Example 27 in place of the compound (C 6) in Example 7.
- the desired compound (C28) was obtained in the same manner as in Example 7 except for using the compound.
- Example 29 Di7 "-deoxy-7" -fluoro-scaro (2-6) sugar chain of asparagine (C29-1) and asparagine protected by Fmoc group protecting amino group nitrogen of asparagine with Fmoc group Synthesis of two kinds of mono 7 "-doxy 1 7" -fluoro-scaro (2-6) sugar chains of asparagine (C29-2 and C29-3) with amino group nitrogen protected
- Example 30 galactose hydrolase of Example 29
- the desired compound (C30) was obtained in the same manner as in Example 2 except that the compound (C29-2) obtained in Example 29 was used in place of the compound (C1-2) in Example 2. Was done.
- the chemical formula of (C30) is shown below.
- a target compound (C31) was obtained in the same manner as in Example 3, except that the compound (C30) obtained in Example 30 was used instead of the compound (C2) in Example 3.
- Example 32 (mannose hydrolase of Example 31) The desired compound (C32) was obtained in the same manner as in Example 4, except that the compound (C31) obtained in Example 31 was used instead of the compound (C3) in Example 4.
- Example 33 galactose hydrolase of Example 29
- the desired compound (C33) was obtained in the same manner as in Example 5 except that the compound (C29-3) obtained in Example 29 was used instead of the compound (C1-3) of Example 5. Was done.
- the chemical formula of (C33) is shown below.
- a target compound (C34) was obtained in the same manner as in Example 6, except that the compound (C33) obtained in Example 33 was used instead of the compound (C5) in Example 6.
- Example 34 The compound (C34) obtained in Example 34 was replaced with the compound (C34) obtained in Example 34.
- the desired compound (C35) was obtained in the same manner as in Example 7, except that the compound was used.
- the chemical formula of (C 35) is shown below.
- NMR data of 8Fa2,6-11 sugar-Asn-Fmoc (C36-1) are shown below.
- the Fmoc group was deprotected by the following procedure for all the asparagine derivatives of the sugar chains.
- glycan asparagine Fmo c body 240 liters per 1 mo Of N, N-dimethylformamide and 160 ⁇ L of morpholine were added and reacted at room temperature under an argon atmosphere.
- the mixture was cooled with ice water.
- getyl ether 10 times the volume of the reaction solution and stirring for 15 minutes the deposited precipitate was separated by filtration. The obtained residue was dissolved in water and evaporated at 35 ° C.
- Example 50 After reacting the asparagine sugar chain obtained in Example 50 with anhydrous hydrazine, the asparagine residue was removed by acetylation to obtain a corresponding sugar chain.
- Example 5 2 The raw materials and intended products in each example are shown below.
- Example 5 2 The raw materials and intended products in each example are shown below.
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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JP2005509744A JP4219931B2 (ja) | 2002-12-24 | 2003-12-24 | 糖鎖アスパラギン誘導体、糖鎖アスパラギンおよび糖鎖ならびにそれらの製造法 |
EP03786249A EP1577397A4 (en) | 2002-12-24 | 2003-12-24 | SUGAR CHAIN ASPARAGIN DERIVATIVES, SUGAR CHAIN ASPARAGIN, SUGAR CHAIN, AND METHODS OF PRODUCING THE SAME |
AU2003296067A AU2003296067C1 (en) | 2002-12-24 | 2003-12-24 | Sugar chain asparagine derivatives, sugar chain asparagine, sugar chain, and processes for producing these |
US10/540,503 US7304148B2 (en) | 2002-12-24 | 2003-12-24 | Sugar chain asparagine derivatives, sugar chain asparagine, sugar chain, and processes for producing these |
CA2511190A CA2511190C (en) | 2002-12-24 | 2003-12-24 | Sugar chain asparagine derivatives, sugar chain asparagine, sugar chain, and processes for producing these |
US11/976,527 US8158763B2 (en) | 2002-12-24 | 2007-10-25 | Sugar chain asparagine derivatives, sugar chain asparagine, sugar chain and processes for producing these |
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JP2002-373213 | 2002-12-24 | ||
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US11/976,527 Division US8158763B2 (en) | 2002-12-24 | 2007-10-25 | Sugar chain asparagine derivatives, sugar chain asparagine, sugar chain and processes for producing these |
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KR (1) | KR100736510B1 (ja) |
AU (1) | AU2003296067C1 (ja) |
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Cited By (19)
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RU2668163C2 (ru) | 2013-03-29 | 2018-09-26 | Глитек, Инк. | Полипептид, гликозилированный сиалилированной сахарной цепью |
CN107001528A (zh) | 2014-07-09 | 2017-08-01 | 米德瑞(美国)有限公司 | 低聚糖组合物及其制备方法 |
EP4209130A1 (en) | 2015-01-26 | 2023-07-12 | DSM Nutritional Products, LLC | Oligosaccharide compositions for use animal feed and methods of producing thereof |
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US8158763B2 (en) | 2012-04-17 |
KR20050085242A (ko) | 2005-08-29 |
CA2511190A1 (en) | 2004-07-15 |
TW200418868A (en) | 2004-10-01 |
JP4219931B2 (ja) | 2009-02-04 |
AU2003296067B2 (en) | 2007-08-23 |
US20080214798A1 (en) | 2008-09-04 |
US7304148B2 (en) | 2007-12-04 |
JPWO2004058984A1 (ja) | 2006-04-27 |
TWI330641B (en) | 2010-09-21 |
CA2511190C (en) | 2011-01-04 |
AU2003296067B8 (en) | 2004-07-22 |
AU2003296067A1 (en) | 2004-07-22 |
KR100736510B1 (ko) | 2007-07-06 |
EP1577397A1 (en) | 2005-09-21 |
TWI335920B (en) | 2011-01-11 |
TW200811197A (en) | 2008-03-01 |
US20060228784A1 (en) | 2006-10-12 |
EP1577397A4 (en) | 2011-03-30 |
AU2003296067C1 (en) | 2013-09-19 |
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