WO2016182083A1 - 光学異性体用分離剤 - Google Patents
光学異性体用分離剤 Download PDFInfo
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- WO2016182083A1 WO2016182083A1 PCT/JP2016/064447 JP2016064447W WO2016182083A1 WO 2016182083 A1 WO2016182083 A1 WO 2016182083A1 JP 2016064447 W JP2016064447 W JP 2016064447W WO 2016182083 A1 WO2016182083 A1 WO 2016182083A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B57/00—Separation of optically-active compounds
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/281—Sorbents specially adapted for preparative, analytical or investigative chromatography
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/281—Sorbents specially adapted for preparative, analytical or investigative chromatography
- B01J20/286—Phases chemically bonded to a substrate, e.g. to silica or to polymers
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/281—Sorbents specially adapted for preparative, analytical or investigative chromatography
- B01J20/29—Chiral phases
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3268—Macromolecular compounds
- B01J20/328—Polymers on the carrier being further modified
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
Definitions
- the present invention relates to a separating agent for optical isomers, and to a separating agent for optical isomers having a structure in which a hydroxyl group of xylan is substituted with a carbamate derivative having a specific structure.
- Optical isomers are used as medicines and their raw materials. In such an application to act on a living body, only one optical isomer is usually used as the optical isomer, and a very high optical purity is required.
- a column containing a separation agent for optical isomers having optical resolution is used, such as liquid chromatography, simulated moving bed chromatography, supercritical fluid chromatography, etc.
- a method for separating one optical isomer from a mixture of optical isomers such as a racemate is known.
- a polymer having an optically active site can be used as the separating agent for optical isomers.
- Such a separating agent for optical isomers is usually composed of a carrier such as silica gel and the polymer supported on the surface thereof, accommodated in a column tube and used for optical resolution.
- a polymer having an optically active site a polysaccharide and a polysaccharide derivative in which a hydroxyl group of the polysaccharide is substituted with an alkyl-substituted phenyl carbamate have been known (Patent Document 1).
- the polysaccharide those using chitosan in addition to cellulose and amylose are also known.
- Non-Patent Document 1 a derivative obtained by using xylan as a polysaccharide and substituting its hydroxyl group with 3,5-dimethylphenylcarbamate or a derivative obtained by substituting 3,5-dichlorophenylcarbamate is used as a separating agent for optical isomers. This is also known (Non-Patent Document 1).
- the types of phenyl carbamates used are only 3,5-dimethylphenyl carbamate and 3,5-dichlorophenyl carbamate, and phenyl carbamate that substitutes the hydroxyl group of xylan.
- the present invention comprises a novel xylan-phenylcarbamate derivative obtained by substituting the hydroxyl group of xylan with a phenylcarbamate group having another substituent different from the above-mentioned phenylcarbamate group having a substituent, and a carrier. It is an object of the present invention to provide a separating agent for optical isomers.
- the inventors of the present invention differed from the previously known hydroxyl group of xylan from 3,5-dimethylphenylcarbamate and 3,5-dichlorophenylcarbamate.
- a xylan derivative obtained by substitution with a phenyl carbamate group having another substituent is more specific racemic than a conventional xylan-3,5-dimethylphenyl carbamate derivative or xylan-3,5-dichlorophenyl carbamate derivative.
- a separating agent for optical isomers comprising a xylan-phenylcarbamate derivative in which a hydroxyl group of xylan is substituted with a group represented by the following (I) or (II) and a carrier:
- R 1 is halogen or an alkyl group having 1 to 5 carbon atoms, and the substitution position of R 1 is the meta position or the para position.
- R 2 and R 3 are each Independently, it is a halogen or an alkyl group having 1 to 5 carbon atoms, and R 2 and R 3 are different groups.
- the group substituting the hydroxyl group of xylan is a group represented by the formula (II), R 2 in the formula (II) is a halogen, and R 3 is an alkyl group having 1 to 5 carbon atoms.
- the separating agent for optical isomers according to [1].
- FIG. 3 is a diagram showing a 1 H-NMR spectrum of a xylan-3-methylphenylcarbamate derivative at 80 ° C. in DMSO-d 6 .
- 1 is a diagram showing a chromatogram obtained by separating a specific racemate using the optical isomer separating agent prepared in Example 1.
- FIG. It is a figure which shows the chromatogram obtained by isolate
- the separating agent for optical isomers of the present invention comprises a xylan-phenylcarbamate derivative in which the hydroxyl group of xylan is substituted with a group represented by the following (I) or (II) and a carrier.
- R 1 is halogen or an alkyl group having 1 to 5 carbon atoms, and the substitution position of R 1 is the meta position or the para position.
- R 2 and R 3 are each independently halogen or an alkyl group having 1 to 5 carbon atoms, and R 2 and R 3 are different groups.
- the xylan used in the present invention may be either ⁇ -1,4-xylan, ⁇ -1,3-xylan, or a mixture thereof.
- the number average degree of polymerization of xylan (average number of pyranose rings contained in one molecule) is preferably 5 or more, more preferably 10 or more, and there is no particular upper limit, but 1000 or less is easy to handle. In this respect, it is preferably 5 to 1000, more preferably 10 to 1000, and particularly preferably 10 to 500.
- the hydroxyl group of xylan may be unreacted and may be substituted with other substituents as long as the effects of the present invention are not impaired.
- the ratio the aspect which is about 20% or less in all the hydroxyl groups can be mentioned.
- Examples of the method for substituting the hydrogen atom of the hydroxyl group of xylan with the phenyl carbamate group having a substituent represented by the formula (I) or (II) include the following methods.
- the compound is dissolved in an amide solvent exemplified by N, N-dimethylacetamide, N-methyl-2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone in which lithium chloride is dissolved.
- examples of the halogen include chlorine, bromine and fluorine, with chlorine being preferred.
- the alkyl group having 1 to 5 carbon atoms is preferably methyl or ethyl.
- R 1 is located at the meta position or the para position, but the meta position is superior in the optical resolution of a specific optical isomer.
- R 1 is preferably an alkyl group having 1 to 5 carbon atoms from the viewpoint of excellent optical resolution of a specific optical isomer.
- examples of the halogen include chlorine, bromine and fluorine, with chlorine being preferred.
- the alkyl group having 1 to 5 carbon atoms is preferably methyl or ethyl.
- R 2 and R 3 are not the same group, and when either R 2 or R 3 is a halogen, the remaining group is an alkyl group having 1 to 5 carbon atoms. From the viewpoint of excellent optical resolution.
- chlorine is substituted as a halogen and a methyl group or an ethyl group is substituted as a non-halogen group.
- R 2 is preferably halogen, and more preferably chlorine.
- R 3 is preferably an alkyl group having 1 to 5 carbon atoms, and more preferably a methyl group.
- Examples of the carrier used for supporting the xylan derivative include a porous organic carrier and a porous inorganic carrier, and a porous inorganic carrier is preferable.
- Suitable as the porous organic carrier is a polymer material selected from polystyrene, poly (meth) acrylamide, poly (meth) acrylate, etc.
- suitable as the porous inorganic carrier is silica gel, alumina, zirconia, Examples include titania, magnesia, glass, kaolin, titanium oxide, silicate, and hydroxyapatite.
- Preferred carriers are silica gel, alumina, or glass.
- the average particle size of the carrier that can be used in the present invention is usually 0.1 to 1000 ⁇ m, preferably 1 to 50 ⁇ m.
- the average pore diameter of the carrier is usually 10 to 10000 mm, preferably 50 to 1000 mm.
- the specific surface area of the carrier is usually 5 to 1000 m 2 / g, preferably 10 to 500 m 2 / g.
- the average particle diameter of the separating agent for optical isomers of the present invention can be measured by an apparatus that uses a microscope image, for example, Mastersizer 2000E manufactured by Malvern.
- the amount of the xylan-phenylcarbamate derivative supported on the carrier may be 1 to 100% by weight relative to the carrier, and may be 5 to 50% by weight. Is preferred. This loading can be determined by thermogravimetric analysis.
- the method for supporting the xylan-phenylcarbamate derivative on a carrier may be a chemical method or a physical method. Physical methods include dissolving the xylan-phenylcarbamate derivative in a soluble solvent, mixing well with the carrier, and distilling off the solvent with a stream of air under reduced pressure or warming. Alternatively, the xylan-phenylcarbamate derivative is soluble in the solvent.
- a soluble solvent is diffused by dissolving in a solvent and mixing well with a carrier and then dispersing in a solvent insoluble in a xylan-phenylcarbamate derivative.
- the separation agent thus obtained can be improved in its separation ability by performing an appropriate treatment such as heating, addition of a solvent, and washing.
- the separation agent for optical isomers of the present invention can be packed in a column having a known size by a known method and used as a column for HPLC.
- the flow rate of HPLC can be appropriately adjusted and used in an aspect of about 0.1 to 5 ml / min. Can be mentioned.
- the separation agent for optical isomers of the present invention can be used for gas chromatography, electrophoresis, particularly for capillary electrochromatography (for CEC), CZE (capillary zone electrophoresis), MEKC (micellar electrokinetic chromatography). ) Method can also be used as a filler for capillary columns.
- Example 1 A xylan derived from beech wood (Sigma-Aldrich) was dispersed in water at 60 ° C., and xylan was recovered as an acetone-insoluble fraction for pretreatment. As shown in the following reaction formula, the pretreated xylan is reacted with an excess of phenyl isocyanate substituted with methyl at the meta position in a solution at 80 ° C. (dimethylacetamide, lithium chloride, dry pyridine). Then, the hydroxyl group of xylan was carbamoylated to obtain a xylan-phenylcarbamate derivative (a) into which a meta-methylphenylcarbamate group represented by the following (1) was introduced. The 1 H-NMR spectrum of the resulting xylan-phenylcarbamate derivative is shown in FIG. 1 H-NMR spectrum (500 MHz) was obtained using a Brucker-500 Spectrometer (Brucker, USA).
- Table 1 shows the results of thermogravimetric analysis of the xylan-phenylcarbamate derivative substituted with the phenylcarbamate group having the substituent represented by (1).
- Examples 2 to 7 A xylan-phenylcarbamate into which a phenylcarbamate group having a substituent represented by the following formulas (2) to (7) was introduced in the same procedure as in Example 1 except that phenylisocyanate having different types of substituents was used. Derivatives (b) to (g) were obtained.
- the number of theoretical plates in column-1 is benzene, using a hexane / 2-propanol (90/10, v / v) mixture as an eluent, and a flow rate of 0.1 ml / min. When measured with setting to 1, it was 1500-3000. The dead time (t 0 ) was measured using 1,3,5-tri-tert-butylbenzene as a non-retaining substance.
- As the HPLC apparatus UV / Vis (Jasco UV-2070) and JASCO PU-2089 chromatograph with circular dichroism detector (JASCO CD-2095) were used.
- the sample (racemic solution (2 mg / mL) solution) was injected into the chromatographic system using an Intelligent sampler (JASCO AS-2055).
- FIG. 2 shows a chromatogram obtained by separating a racemate having the following structure.
- optical isomer separating agent-1 using the xylan-phenylcarbamate derivatives (b) to (k) obtained in Examples 2 to 7 and Comparative Examples 1 to 4, the optical isomer separating agent-2 ⁇ 11 were obtained.
- Each optical isomer separating agent was packed in a stainless steel column in the same manner as in Example 1. Racemates 1 and 2 having the following structures were separated using columns -1 to 11 packed with optical isomer separating agents -1 to 11, respectively. In the analysis using each column, hexane / 2-propanol (90/10, v / v) was used as the eluent, the flow rate was 0.1 mL / min, and the detection wavelength was 254 nm.
- Example 2 when phenyl is substituted with chlorine, Example 2 in which one chlorine is substituted at the meta position> Chlorine at the para position In the order of Example 4> chlorine substituted at the meta position and methyl group substituted at the para position> Comparative Example 3 substituted with two chlorines at the meta position. And the separation factor of 2 was high.
- Example 2 and Example 1 in Table 2 the comparison between Comparative Example 3 and Comparative Example 4 in Table 3, the one having a methyl group which is an electron donating substituent is more electron withdrawing. It was found that the separation ability of racemates 1 and 2 was superior to those having chlorine as a substituent.
- the hydroxyl group of xylan is superior to a xylan-phenylcarbamate derivative in which the phenyl group is substituted with a phenyl carbamate group in which the 3,5 position of the phenyl group is substituted with a chlorine or methyl group. It is possible to provide a separating agent for optical isomers using a xylan-phenylcarbamate derivative, which has an excellent separating ability.
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Abstract
Description
光学活性な部位を有する高分子としては、従来から多糖やその多糖の水酸基がアルキル置換フェニルカルバメートで置換された多糖誘導体が知られている(特許文献1)。
その多糖としては、セルロース、アミロースに加え、キトサンを用いたものも知られている。
一方、多糖としてキシランを用い、その水酸基を3,5-ジメチルフェニルカルバメートで置換して得た誘導体や、3,5-ジクロロフェニルカルバメートで置換して得た誘導体を光学異性体用分離剤として利用することも知られている(非特許文献1)。
そこで本発明では、キシランの水酸基を、上記の置換基を有するフェニルカルバメート基とは異なる他の置換基を有するフェニルカルバメート基で置換して得られる新規なキシラン-フェニルカルバメート誘導体と、担体から構成される光学異性体用分離剤を提供することを課題とする。
[1] キシランの水酸基が、以下の(I)または(II)で示される基で置換されたキシラン-フェニルカルバメート誘導体と担体から構成される、光学異性体用分離剤。
[2] キシランの水酸基を置換している基が、式(I)で示される基であり、R1が、炭素数1~5のアルキル基である、[1]に記載の光学異性体用分離剤。
[3] R1の置換位置がメタ位であり、R1がメチル基またはエチル基である、[2]に記載の光学異性体用分離剤。
[4] キシランの水酸基を置換している基が式(II)で示される基であり、式(II)におけるR2がハロゲンであり、R3が炭素数1~5のアルキル基である、[1]に記載の光学異性体用分離剤。
[5] R2が塩素であり、R3がメチル基またはエチル基である、[4]に記載の光学異性体用分離剤。
[6] 担体がシリカゲルである、[1]~[5]のいずれかに記載の光学異性体用分離剤。
キシランの数平均重合度(1分子中に含まれるピラノース環の平均数)は、好ましくは5以上、より好ましくは10以上であり、特に上限はないが、1000以下であることが取り扱いの容易さの点で好ましく、より好ましくは5~1000、更に好ましくは10~1000、特に好ましくは10~500である。
上記のキシラン-フェニルカルバメート誘導体において、キシランの水酸基について、未反応のものがあってもよく、また、本発明の効果を損なわない限り、他の置換基で置換されてもよい。その割合としては全水酸基の中で概ね20%以下である態様を挙げることができる。
芳香族環上の水素が上記式(I)に記載のようにR1で置換されたフェニルイソシアネート化合物、または上記式(II)に記載のように、R2及びR3で置換されたフェニルイソシアネート化合物を、塩化リチウムを溶解させたN,N-ジメチルアセトアミド、N-メチル-2-ピロリドン及び1,3-ジメチル-2-イミダゾリジノンで例示されるアミド系溶媒に溶解させ、この溶液にキシランを加え、適当な温度及び時間(20~100℃、1~24時間)で反応を起こさせることで、フェニルイソシアネート化合物のイソシアネート基とキシランの水酸基とを反応させる。
上記アミド系溶媒の他にも、例えばピリジンを同時に用いることもできる。
また、R1は、メタ位またはパラ位に位置するが、メタ位である方が、特定の光学異性体の光学分割能に優れる。
また、R1は、炭素数1~5のアルキル基であることが、特定の光学異性体の光学分割能に優れるという観点から好ましい。
R2とR3は同一の基ではなく、R2またはR3のどちらかの基がハロゲンである場合、残りの基は炭素数1~5のアルキル基であることが、特定の光学異性体の光学分割能に優れるという観点から好ましい。
具体的には、R2またはR3のいずれかにおいて、ハロゲンとして塩素が置換し、ハロゲンではない基としてメチル基またはエチル基が置換していることが好ましい。例えば、R2がハロゲンであることが好ましく、塩素であることがより好ましい。また、R3が炭素数1~5のアルキル基であることが好ましく、メチル基であることがより好ましい。
上記担体について、その表面処理を行うことにより、担体自体への分離対象物質の過剰な吸着を抑制できる。表面処理剤としては、アミノプロピルシランのようなシランカップリング剤や、チタネート系・アルミネート系カップリング剤を挙げることができる。
また、担体の比表面積は、通常5~1000m2/g、好ましくは10~500m2/gである。
本発明の光学異性体用分離剤の平均粒径は、顕微鏡画像を用いて測定する装置、例えばMalvern社製Mastersizer 2000Eにより測定することができる。
この担持量は、熱重量分析によって求めることができる。
上記のキシラン-フェニルカルバメート誘導体を担体に担持させる方法は化学的方法でも物理的方法でもよい。物理的方法としては、キシラン-フェニルカルバメート誘導体を可溶性の溶剤に溶解させ、担体と良く混合し、減圧または加温下、気流により溶剤を留去させる方法や、キシラン-フェニルカルバメート誘導体を可溶性の溶剤に溶解させ、担体と良く混合した後、キシラン-フェニルカルバメート誘導体に対し不溶性の溶剤に分散させることによって可溶性溶剤を拡散させてしまう方法もある。この様にして得られた分離剤は、加熱、溶媒の添加、洗浄などの適当な処理を行うことによって、その分離能を改善することも可能である。
本発明の光学異性体用分離剤を充填したカラムを用いてHPLCで光学異性体を分離する際の、HPLCの流速は適宜調整して用いることができ、0.1~5ml/min程度の態様を挙げることできる。
ブナ材由来のキシラン(Sigma-Aldrich)を60℃の水に分散し、アセトン不溶性画分としてキシランを回収することで予備処理を行った。
以下の反応式で示すように、予備処理を行ったキシランと、メタ位にメチルが置換したフェニルイソシアネートの超過量とを、80℃の溶液(ジメチルアセトアミド、塩化リチウム、乾燥ピリジン)中で反応させ、キシランの水酸基をカルバモイル化し、以下の(1)で示されるメタ-メチルフェニルカルバメート基が導入された、キシラン-フェニルカルバメート誘導体(a)を得た。
置換基の種類が異なるフェニルイソシアネートを用いること以外は実施例1と同様の手順により、以下の式(2)~(7)で示される置換基を有するフェニルカルバメート基が導入されたキシラン-フェニルカルバメート誘導体(b)~(g)を得た。
置換基の種類が異なるフェニルイソシアネートを用いること以外は実施例1と同様の手順により、以下の式(8)~(12)で示さる置換基を有するフェニルカルバメート基が導入された比較例1~4のキシラン-フェニルカルバメート誘導体(h)~(k)を得た。
(b): 1H NMR (DMSO‐d6):δ3.1-5.7 (glucose protons,6H), 6.6‐7.9 (aromatic,8H), 9.2‐10.1 (NH,2H).
(c): 1H NMR (DMSO‐d6):δ3.2‐5.3 (glucose protons, 6H), 6.6-7.7(aromatic,8H), 9.0-9.8 (NH,2H).
(d): 1H NMR (DMSO‐d6):δ3.1‐5.2 (glucose protons, 6H), 6,9-7.8(aromatic,8H), 9.1-9.9 (NH,2H).
(e): 1H NMR (DMSO‐d6):δl.8‐2.5 (CH3,6H), 3.1‐5.3 (glucose protons,6H), 6.6‐7.6 (aromatic,8H), 8.7-9.6 (NH, 2H).
(f): 1H NMR (DMSO‐d6): δ0.7‐1.4(CH3,6H), 2.1-2.7(CH2,4H), 3.1-5,4(glucose protons, 6H), 6.6-7.8 (aromatic, 8H), 8.7‐9.8(NH,2H).
(g): 1H NMR (DMSO‐d6):δl.9-2.4(CH3,6H), 3.1-5,3 (glucose protons, 6H), 6.8-7,9 (aromatic,6H) 9.1-10.0(NH,2H).
(h): 1H NMR (DMSO‐d6):δ3.1-5.6 (glucose protons, 6H), 7.2‐8.5(aromatic,8H), 9.7‐10.5 (NH,2H).
(i): 1H NMR (DMSO‐d6):δ3.4-4.0 (CH3,6H),3.1-5.2(glucose protons, 6H), 6.3-7.5(aromatic, 8H), 8.6-9.4 (NH,2H).
実施例1で作製したキシラン-フェニルカルバメート誘導体(a)(0.35g)を、テトラヒドロフラン(8mL)に完全に溶解した後、予めアミノプロピルトリエトキシシランで表面処理を行ったシリカゲル(平均粒径7μm、平均孔径100nm)(1.40g)の表面にコーティングして、光学異性用分離剤-1を得た。
光学異性体用分離剤-1を、ステンレススチール製のカラム(25 cm×0.20cm i.d.)に、スラリー法によって充填してカラム-1を得た。
カラム-1の理論段数は、ベンゼンを対象として、hexane/2-propanol (90/10, v/v)混合物を溶離液として用い、流速を0.1ml/min.に設定して測定したとき、1500-3000であった。
デッド時間(t0)は、非保持物質として1,3,5-tri-tert-butylbenzeneを用いて測定を行った。
HPLC装置として、UV/Vis (Jasco UV-2070)及び円二色性検出器(JASCO CD-2095)付のJASCO PU-2089クロマトグラフを用いた。
サンプル(ラセミ体(2mg/mL)の溶液)のクロマトグラフシステムへの注入は、Intelligent sampler (JASCO AS-2055)を用いて行った。
以下の構造を有するラセミ体を分離して得られたクロマトグラムを図2に示す。
光学異性体用分離剤-1~11が充填されたカラム-1~11を用い、以下の構造を有するラセミ体1及び2を分離した。各カラムを用いた分析では、溶離液としてhexane/2-propanol (90/10, v/v)を用い、流速を0.1mL/min.とし、検出波長は254nmとした。
表中に示す化合物の不斉識別能力(分離係数α値)は以下で示すように、保持係数(k1')から算出した。
また、実施例2、4及び比較例3の光学異性体用分離剤を用いたカラムによりラセミ体1を分離して得られたクロマトグラムを図3に示す。
k1’=[(対掌体の保持時間)-(デッドタイム)]/デッドタイム)
分離係数(α)
α=(より強く保持される対掌体の保持係数)/(より弱く保持される対掌体の保持係数)
またラセミ体1及び2のいずれについても、エチル基がパラ位に置換している実施例6は、実施例1及び5とほぼ同等の分離能力を有していた。
Claims (6)
- キシランの水酸基を置換している基が、式(I)で示される基であり、R1が、炭素数1~5のアルキル基である、請求項1に記載の光学異性体用分離剤。
- R1の置換位置がメタ位であり、R1が、メチル基またはエチル基である、請求項2に記載の光学異性体用分離剤。
- キシランの水酸基を置換している基が、式(II)で示される基であり、式(II)におけるR2がハロゲンであり、R3が炭素数1~5のアルキル基である、請求項1に記載の光学異性体用分離剤。
- R2が塩素であり、R3がメチル基またはエチル基である、請求項4に記載の光学異性体用分離剤。
- 担体がシリカゲルである、請求項1~5のいずれか一項に記載の光学異性体用分離剤。
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| CN201680024453.5A CN107615060A (zh) | 2015-05-14 | 2016-05-16 | 光学异构体用分离剂 |
| JP2017518015A JP6791565B2 (ja) | 2015-05-14 | 2016-05-16 | 光学異性体用分離剤 |
| EP16792807.6A EP3296735B1 (en) | 2015-05-14 | 2016-05-16 | Separating agent for optical isomers |
| US15/571,670 US20180148392A1 (en) | 2015-05-14 | 2016-05-16 | Separating agent for optical isomers |
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| JPH0381262A (ja) * | 1989-08-23 | 1991-04-05 | Yamanouchi Pharmaceut Co Ltd | ジヒドロピリジン系カルシウム拮抗薬の光学活性体の製造法 |
| WO2008102920A1 (ja) * | 2007-02-23 | 2008-08-28 | Daicel Chemical Industries, Ltd. | 光学異性体分離用充填剤 |
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| JPH0813844B2 (ja) * | 1986-03-20 | 1996-02-14 | ダイセル化学工業株式会社 | 多糖のアルキル置換フエニルカルバメ−ト誘導体 |
| JPH03181433A (ja) * | 1989-12-11 | 1991-08-07 | Daicel Chem Ind Ltd | 1―パラ置換フェニルエタノールの直接分割方法 |
| JP3148032B2 (ja) * | 1993-01-18 | 2001-03-19 | ダイセル化学工業株式会社 | 多糖の置換芳香族カルバメート誘導体および分離剤 |
| US5948904A (en) * | 1995-03-07 | 1999-09-07 | Novartis Ag | Process for the preparation of aromatic carbamoyl-substituted polysaccharide derivatives |
| US5965026A (en) * | 1995-12-21 | 1999-10-12 | Daicel Chemical Industries, Ltd. | Packing material for high-performance liquid chromatography |
| ES2211080T3 (es) * | 1998-05-01 | 2004-07-01 | Pfizer Products Inc. | Procedimiento para la produccion de sertralina tetralona enantiomericamente pura u opticamente enriquecida usando cromatografia continua. |
| EP1331214A4 (en) * | 2000-10-13 | 2006-08-02 | Daicel Chem | PACKAGING MATERIAL FOR SEPARATING OPTICAL ISOMERS AND METHOD FOR SEPARATING OPTICAL ISOMERS USING THIS MATERIAL |
| DE602004032335D1 (de) * | 2003-04-24 | 2011-06-01 | Daicel Chem | Trennbares mittel für optischen isomer |
| CN100400510C (zh) * | 2003-04-24 | 2008-07-09 | 大赛璐化学工业株式会社 | 旋光性二羟基-庚烯酸酯的分离方法 |
| JP4646582B2 (ja) * | 2004-09-15 | 2011-03-09 | ダイセル化学工業株式会社 | フォトレジスト用共重合体の製造法 |
| TWI436991B (zh) * | 2004-11-22 | 2014-05-11 | Euro Celtique Sa | 用於純化反-(-)-△9-四氫大麻酚與反-(+)-△9-四氫大麻酚之方法 |
| WO2015004686A2 (en) * | 2013-07-11 | 2015-01-15 | Laurus Labs Private Limited | A process for purification of efavirenz and intermediates thereof using chromatographic methods |
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| JPH0381262A (ja) * | 1989-08-23 | 1991-04-05 | Yamanouchi Pharmaceut Co Ltd | ジヒドロピリジン系カルシウム拮抗薬の光学活性体の製造法 |
| WO2008102920A1 (ja) * | 2007-02-23 | 2008-08-28 | Daicel Chemical Industries, Ltd. | 光学異性体分離用充填剤 |
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| Publication number | Publication date |
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| EP3296735A1 (en) | 2018-03-21 |
| JP6791565B2 (ja) | 2020-11-25 |
| CN106268657A (zh) | 2017-01-04 |
| US20180148392A1 (en) | 2018-05-31 |
| CN107615060A (zh) | 2018-01-19 |
| EP3296735B1 (en) | 2022-02-16 |
| EP3296735A4 (en) | 2018-05-30 |
| JPWO2016182083A1 (ja) | 2018-03-01 |
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