WO2012086762A1 - アミノ基含有ホスホリルコリン化合物及びその製造方法 - Google Patents
アミノ基含有ホスホリルコリン化合物及びその製造方法 Download PDFInfo
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- WO2012086762A1 WO2012086762A1 PCT/JP2011/079825 JP2011079825W WO2012086762A1 WO 2012086762 A1 WO2012086762 A1 WO 2012086762A1 JP 2011079825 W JP2011079825 W JP 2011079825W WO 2012086762 A1 WO2012086762 A1 WO 2012086762A1
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- phosphorylcholine
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/06—Phosphorus compounds without P—C bonds
- C07F9/08—Esters of oxyacids of phosphorus
- C07F9/09—Esters of phosphoric acids
- C07F9/10—Phosphatides, e.g. lecithin
- C07F9/106—Adducts, complexes, salts of phosphatides
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/06—Phosphorus compounds without P—C bonds
- C07F9/08—Esters of oxyacids of phosphorus
- C07F9/09—Esters of phosphoric acids
- C07F9/091—Esters of phosphoric acids with hydroxyalkyl compounds with further substituents on alkyl
Definitions
- the present invention introduces a phosphorylcholine-like group into various substrates such as medical devices, cosmetic raw materials, drugs, etc.
- the present invention relates to an amino group-containing phosphorylcholine compound that can be reacted efficiently and a method for producing the same.
- Non-patent Document 1 Non-patent Document 1
- a phosphorylcholine-like group-containing compound as a modifier in which a reactive group capable of reacting with various substrate surfaces is introduced Is being actively developed.
- a phosphorylcholine analog group compound introduced with a silanol group Patent Document 1
- a phosphorylcholine analog group-containing compound introduced with a carboxyl group Patent Document 2
- a phosphorylcholine analog group-containing compound introduced with an aldehyde group Patent Document 3
- a ketal A phosphorylcholine-like group-containing compound into which a group is introduced Patent Document 4
- the base material surface has functional groups complementary thereto.
- Some, for example, amino groups need to be present. When such an amino group does not exist, the reaction rate becomes very low, and thus a long and high temperature reaction condition is required.
- the base surface is subjected to, for example, plasma treatment or hydrolysis treatment to introduce industrially easy-to-use carboxyl groups, such a base surface is similar to the phosphorylcholine disclosed in Patent Documents 1 to 4 above. There is a problem that the reactivity with the group-containing compound is low.
- Patent Document 5 proposes a method using 2-chloro-2-oxa-1,3,2-dioxaphosphorane and trimethylamine.
- a phosphorylcholine-like group-containing compound into which an amino group has been introduced by this method it is necessary to perform a step of protecting the amino group, the reaction becomes complicated, and a large amount of by-products are generated. Until now, the method has not been sufficiently studied.
- An object of the present invention is to have a highly active amino group that can be efficiently reacted with a wide variety of functional groups and the like under mild conditions. It is an object of the present invention to provide an amino group-containing phosphorylcholine compound useful as a starting material or a compound capable of imparting the functionality of Another object of the present invention is to provide an amino group-containing phosphorylcholine compound of the present invention that can be obtained easily and in high yield without the need for long-time and high-temperature reaction conditions. It is to provide a manufacturing method.
- the present inventors have established 2-methacryloyloxyethyl phosphorylcholine, which is an industrially available process and has been established as a starting material.
- the inventors have found that the amino group-containing phosphorylcholine compound can be obtained by adding aminoethanethiol hydrochloride at a specific ratio and preferentially Michael addition reaction of thiol groups, thereby completing the present invention.
- At least one amino group-containing phosphorylcholine compound represented by the formula (1) and the formula (1 ′).
- AmPC amino group-containing phosphorylcholine compound
- MPC 2-methacryloyloxyethyl phosphorylcholine
- MPC 2-aminoethanethiol
- MPC 2-aminoethanethiol hydrochloride
- (above (b) + (c)) / (a)) is 1.0 to 3.0 molar equivalent
- (b) / (c) is 0.05 to 1.00 molar equivalent.
- the above AmPC production method is characterized in that the reaction is carried out in the presence of alcohol at a ratio.
- (a) MPC and (b) 2-aminoethanethiol or (c) 2-aminoethanethiol hydrochloride are (((b) + ((c)) / ( There is provided a method for producing AmPC, characterized in that the reaction is carried out in the presence of alcohol at a ratio of a)) of 1.0 to 3.0 molar equivalents.
- AmPC of the present invention has a structure represented by the above formula (1) and / or formula (1 ′) having a phosphorylcholine-like group and a highly active amino group, a carboxyl group, an aldehyde group, an isocyanate group, It can be combined with various functional groups such as halogen under mild conditions and at a high reaction rate. Therefore, AmPC is useful as a compound that introduces a phosphorylcholine-like group on the surface of various base materials such as medical devices, cosmetic raw materials, and drugs, or a raw material thereof. Further, by using it as a component of the surface treatment agent, it is possible to easily impart its functionality to the substrate.
- the selectivity of the material of the medical device is expanded and the phosphorylcholine-like group is easily added. It becomes possible to introduce.
- MPC and 2-aminoethanethiol and / or 2-aminoethanethiol hydrochloride are reacted at a specific ratio, so that the AmPC of the present invention can be easily and in high yield under mild conditions. Can be manufactured.
- AmPC represented by the formula (1) can be obtained in a higher yield.
- FIG. 2 is a chart showing 1 H-NMR measurement results of the compound synthesized in Example 1.
- FIG. 3 is a chart showing 13 C-NMR measurement results of the compound synthesized in Example 1.
- FIG. 2 is a chart showing IR measurement results of the compound synthesized in Example 1.
- FIG. 2 is a chart showing a MASS spectrum of the compound synthesized in Example 1.
- the amino group-containing phosphorylcholine compound (AmPC) of the present invention is represented by 2 ′-[3- (2-aminoethylsulfanyl) -2-methylpropionyloxy] ethyl- [2- (trimethyl) represented by the above formula (1).
- the AmPC of the present invention for example, reacts (a) MPC with (b) 2-aminoethanethiol and / or (c) 2-aminoethanethiol hydrochloride in the presence of alcohol at a specific ratio. It can obtain by the manufacturing method.
- MPC is a compound represented by formula (2)
- 2-aminoethanethiol is a compound represented by formula (3)
- 2-aminoethanethiol hydrochloride is represented by formula (2). It is a compound represented by 4).
- the ratio of the charged amount when all of the raw material monomers (a) to (c) are used is preferably (((b) + (c)) / (a )) Is 1.0 to 3.0 molar equivalent and (b) / (c) is 0.05 to 1.00 molar equivalent (hereinafter referred to as ratio (X)).
- the ratio of the charged amount when using the above-mentioned raw material monomer (a) and the above-mentioned (b) or (c) is (((b) + (( c)) / (a)) is a ratio (hereinafter referred to as a ratio (Y)) of 1.0 to 3.0 molar equivalents.
- a ratio (Y) of 1.0 to 3.0 molar equivalents.
- the alcohol used in the method for producing AmPC of the present invention acts as a solvent for dissolving each of the above raw material monomers during the reaction.
- the alcohol include methanol and ethanol, and ethanol is particularly preferable from the viewpoint of low toxicity and reactivity.
- the amount of alcohol used is not particularly limited as long as the raw material monomer can be dissolved, but it is preferable to adjust the amount so that the solution concentration during the reaction is 10 to 50% by mass.
- the reaction is preferably carried out in an inert gas atmosphere such as nitrogen or argon in order to prevent the thiol group from disulfiding and maintain the nucleophilicity of the thiol group.
- an inert gas atmosphere such as nitrogen or argon
- the reaction temperature exceeds 50 ° C.
- the yield of the target AmPC may decrease due to Michael addition of the amino group to the double bond as a side reaction, or the thiol group forming a disulfide.
- the reaction temperature is preferably 10 to 50 ° C.
- the reaction time may be any time, but since a long-time reaction is accompanied by oxidative degradation, it is preferably within 96 hours.
- the product can be reacted in the presence of a catalyst in order to increase the conversion rate and suppress the production of by-products.
- a catalyst in order to increase the conversion rate and suppress the production of by-products.
- Y the reaction is performed at the above ratio (Y).
- a tertiary amine or a secondary amine can be used, for example.
- the tertiary amine includes triethylamine, and the secondary amine includes diisopropylamine.
- the catalyst can be used by adding an amount of usually 5 to 100 mol% with respect to 2-aminoethanethiol and / or 2-aminoethanethiol hydrochloride.
- the product obtained by the production method of the present invention is preferably purified according to the use, for example, highly purified for high safety uses such as medical devices and cosmetics. Purification can be achieved by, for example, crystallization in an aprotic polar solvent such as acetonitrile and drying and recovering it, or by recovering and precipitating a precipitate precipitated in a solvent such as acetone and acetonitrile. And a method of collecting them.
- AmPC of the present invention has an amino group, it can be chemically bonded to other substances by condensation reaction, nucleophilic substitution reaction, addition reaction, conjugate substitution reaction, reductive amination reaction, and the like. Examples of the combination and reaction include those shown in Table 1.
- AmPC of the present invention is, for example, surface modification treatment of various medical devices such as soft contact lenses and catheters, surface modification treatment of cosmetic raw materials such as foundation, surface modification of proteins and biological materials, or drug binding Can be used to improve delivery.
- a carboxyl group is predominantly present on the surface of the contact lens, and this is converted to 1-ethyl-3- (3-dimethylaminopropyl).
- the phosphorylcholine-like group can be introduced onto the surface of the contact lens by activating with AmPC of the present invention after activation with carbodiimide hydrochloride (EDC) or dicyclohexylcarbodiimide (DCC).
- EDC carbodiimide hydrochloride
- DCC dicyclohexylcarbodiimide
- Example 1-1 Synthesis of 2 ′-[3- (2-aminoethylsulfanyl) -2-methylpropionyloxy] ethyl- [2- (trimethylammonio) ethyl] phosphate hydrochloride (AmPC) MPC 2.00 g (6.77 mmol) was added to a three-necked flask, and 11.33 g of ethanol was added thereto and stirred uniformly. Nitrogen gas was bubbled into the flask to create a nitrogen atmosphere, and then 0.80 g (7.08 mmol) of 2-aminoethanethiol hydrochloride was added and uniformly dissolved.
- AmPC AmPC
- Examples 1-2 to 1-4 A reaction was carried out in the same manner as in Example 1-1 except that the raw material charge ratio and conditions shown in Table 2 were changed, and a product was obtained and analyzed and measured. The results are shown in Table 2.
- Examples 1-5 to 1-8 A reaction was carried out in the same manner as in Example 1-1 except that the raw material charge ratio and conditions shown in Table 3 were changed, and a product was obtained and analyzed and measured.
- Example 1-5 diisopropylamine was used as the catalyst, and in Example 1-6, triethylamine was used. The results are shown in Table 3.
- the main product obtained in Example 1-7 and Example 1-8 was analyzed, and 2 ′-[3- (2-aminoethylsulfanyl) -2-2 represented by the formula (1 ′) was found.
- the target AmPC was obtained in high yield by the production method of the present invention.
- a mixture of 2-aminoethanethiol hydrochloride and 2-aminoethanethiol as a raw material at a specific ratio (Examples 1-1 to 1-4)
- by-products are generated under mild conditions. It has been found that the reaction can proceed extremely efficiently without causing the reaction to occur.
- Example 2-1 Using the amino group-containing phosphorylcholine compound obtained by the synthesis method of Example 1-1, an attempt was made to introduce a phosphorylcholine group into a substrate having a carboxylic acid group on the surface.
- a PE film having acrylic acid introduced on the surface by graft polymerization is selected as a substrate having carboxylic acid, and an amino group is obtained by using a condensing agent 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride (WSC). Reaction with the containing phosphorylcholine compound.
- the film after the reaction treatment was examined by X-ray photoelectron spectroscopy (XPS) to confirm the introduction of phosphorylcholine groups. The method is shown below.
- XPS X-ray photoelectron spectroscopy
- AA Acrylic Acid
- PE Grafted Polyethylene
- a polyethylene film cut to 1 ⁇ 4 cm was placed between electrodes of a corona discharge treatment apparatus having an interelectrode distance of 3 cm and an interelectrode voltage of 15 kilovolts, and was subjected to a discharge treatment. . Subsequently, it was immersed in a 10% by mass acrylic acid aqueous solution, and after deaeration treatment, graft polymerization was performed at 60 ° C. for 60 minutes under vacuum conditions. After the polymerization, the film was sufficiently washed with water to obtain an AA grafted PE film.
- the film was dried to obtain a phosphorylcholine group-introduced film.
- the resulting film was subjected to surface analysis using XPS, and the AmPC introduction rate was measured.
- surface wettability was evaluated to confirm surface hydrophilization by introduction of phosphorylcholine groups.
- the element concentration on the surface of the produced 0.5 cm ⁇ 0.5 cm film sample was evaluated using an X-ray photoelectron spectroscopy analyzer (XPS, JPS-9200 manufactured by JEOL) (analysis diameter 1 mm). For each sample, analysis was performed with a binding energy of 304 eV to 274 eV (carbon 1s orbital), 419 eV to 389 eV (phosphorus 2p3 / 2 orbital), 155 eV to 125 eV (nitrogen 1s orbital), 184 eV to 154 eV (sulfur 2p3 / 2 orbital), The introduction rate of AmPC was calculated. The AmPC introduction rate was calculated by the following formula (A) from the ratio of the phosphorus atom surface concentration (C P ) and the carbon atom surface concentration (C C ).
- the amino group-containing phosphorylcholine compound obtained in the present invention is considered to be used for treatment of medical devices such as contact lenses and catheters. Since it has a group on the surface, it can be expected to have excellent biocompatibility, including improved surface wettability.
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Abstract
Description
このように各種基材表面に、ホスホリルコリン類似基含有化合物を反応させるための修飾剤を得るために、各種基材表面と反応させうる反応性基を導入した、修飾剤としてのホスホリルコリン類似基含有化合物の開発が盛んになされている。例えば、シラノール基を導入したホスホリルコリン類似基化合物(特許文献1)、カルボキシル基を導入したホスホリルコリン類似基含有化合物(特許文献2)、アルデヒド基を導入したホスホリルコリン類似基含有化合物(特許文献3)、ケタール基を導入したホスホリルコリン類似基含有化合物(特許文献4)が知られている。
一方、基材表面を、例えば、プラズマ処理や加水分解処理して、工業的に利用しやすいカルボキシル基を導入した場合、このような基剤表面と、上記特許文献1~4に示されるホスホリルコリン類似基含有化合物とは反応性が低いという問題が生じる。
そこで、基材表面に存在する官能基等の種類の選択性が広い、高活性(高求核性)であるアミノ基やチオール基等を導入したホスホリルコリン類似基含有化合物を得ることは工業上非常に有用である。
そこで、特許文献5には、2-クロロ-2-オキサ-1,3,2-ジオキサホスホランとトリメチルアミンとを用いる方法が提案されている。
しかし、この方法によりアミノ基を導入したホスホリルコリン類似基含有化合物を製造する場合、アミノ基を保護する工程を行う必要があり、反応が複雑化し、しかも、副生成物も多量に発生するために、これまで該方法については十分な検討がなされていないのが実状である。
本発明の別の課題は、上記本発明のアミノ基含有ホスホリルコリン化合物を、長時間かつ高温の反応条件を必要とせずに、容易にかつ高収率で得ることが可能なアミノ基含有ホスホリルコリン化合物の製造方法を提供することにある。
更に本発明によれば、(a)MPCと、(b)2-アミノエタンチオール又は(c)2-アミノエタンチオール塩酸塩とを、((上記(b)+上記(c))/上記(a))が1.0~3.0モル当量となる割合でアルコール存在下、反応させることを特徴とするAmPCの製造方法が提供される。
本発明の製造方法は、MPCと、2-アミノエタンチオール及び/又は2-アミノエタンチオール塩酸塩とを、特定割合で反応させるので、温和な条件で容易にかつ高収率で本発明のAmPCを製造することができる。特に、MPCと、2-アミノエタンチオール及び2-アミノエタンチオール塩酸塩とを、特定割合で反応させることにより、式(1)で示されるAmPCを、より高収率で得ることができる。
本発明のアミノ基含有ホスホリルコリン化合物(AmPC)は、上記式(1)で表される、2'-[3-(2-アミノエチルスルファニル)-2-メチルプロピオニルオキシ]エチル-[2-(トリメチルアンモニオ)エチル]ホスファートヒドロクロライド及び/又は上記式(1')で表される、2'-[3-(2-アミノエチルスルファニル)-2-メチルプロピオニルオキシ]エチル-[2-(トリメチルアンモニオ)エチル]ホスファートである。
(a)MPCは式(2)で示される化合物であり、(b)2-アミノエタンチオールは式(3)で表される化合物であり、(c)2-アミノエタンチオール塩酸塩は式(4)で表される化合物である。
また、本発明のAmPCの製造方法において、原料モノマーである上記(a)と、上記(b)又は上記(c)とを用いる場合の仕込み量の割合は、((上記(b)+上記(c))/上記(a))が1.0~3.0モル当量となる割合(以下、割合(Y)という)である。
上記割合(X)及び(Y)において、((上記(b)+上記(c))/上記(a))が3.0モル当量を超える場合には、アミノ基がマイケル付加する可能性やMPCの分解が生じるおそれがある。
上記触媒としては、例えば、第三級アミンまたは第二級アミンが使用できる。第三級アミンとしては、トリエチルアミンが挙げられ、第二級アミンとしてはジイソプロピルアミンが挙げられる。
触媒は、2-アミノエタンチオール及び/又は2-アミノエタンチオール塩酸塩に対して、通常5~100モル%の量を添加して使用できる。
以下に実施例に使用した装置と条件を示す。
<NMR分析>
測定装置:日本電子社製JNM-AL400
溶媒:D2O(3-(トリメチルシリル)プロピオン酸ナトリウム塩基準 0.0005%)
試料濃度:10mg/g、積算回数:32回(1H-NMR)、1024回(13C-NMR)。
<IR分析>
測定装置:日本分光社製FT/IR-6100
測定法:薄膜法、積算回数:16回。
<質量分析(ESI-MS)>
測定装置:Waters社製、商品名Q-micro2695
試料濃度:100ppm、検出モード:ESI+、キャピラリー電圧:3.54V、コーン電圧;30V、イオン源ヒーター:120℃、脱溶媒ガス:350℃。
2'-[3-(2-アミノエチルスルファニル)-2-メチルプロピオニルオキシ]エチル-[2-(トリメチルアンモニオ)エチル]ホスファートヒドロクロライド(AmPC)の合成
MPC 2.00g(6.77mmol)を3つ口フラスコに仕込み、これにエタノール11.33gを加えて、均一に攪拌した。これに窒素ガスをバブリングしてフラスコ内を窒素雰囲気とした後、2-アミノエタンチオール塩酸塩0.80g(7.08mmol)を加えて均一溶解した。さらに、2-アミノエタンチオール0.03g(0.37mmol)を加えて、室温で3時間攪拌反応させた。得られた反応液にアセトニトリルを11.33g加え、共沸により溶媒を減圧留去し、白色固体の生成物を得た。
得られた白色固体について、1H-NMR分析、13C-NMR分析、IR分析及び質量分析を行った。その結果を図1~4並びに以下に示す。これらの結果から、得られた白色固体は、上記式(1)に示される目的化合物のAmPCであることがわかった。
1H-NMR(D2O):δ=1.2(-CH(CH3)C(=O), 3H),2.8-2.9(-(CH3)CHCH2SCH2CH2-,5H),3.2((-CH2NH2,2H)(-N(CH3),9H)),3.7(N(CH3)CH2-,2H),4.1(-CH2OP-,2H),4.3-4.4(-POCH2CH2O-,4H)。
13C-NMR(D2O):δ=16.6(-CH(CH3)C(=O)),29.6(-CH2SCH2CH2NH2),34.6(-CH2SCH2CH2NH2),39.1(-CH(CH3)C(=O)),40.6(-SCH2CH2NH2),54.6(-N(CH3)),60.0(CH2N(CH3)),64.4(NCH2CH2OP),65.1(-OCH2CH2O-),66.2(-OCH2CH2O-),178.1(C=O)。
IR測定により得られたピークの帰属は、Langmuir,2010,26(16),p13028-13032を参考に行った。
FT-IR(cm-1):3393(-NH3 +),2924(C-H),1727(C=O),1226(C=O),1082(-OPOCH2-),967(-N+(CH3)3-)。
AmPC純度(%)=4.1ppmの積分値/[(1.9ppmの積分値+1.2ppmの積分値)×2/3]×転化率
転化率(%)=100-(MPC含有率)
MPC含有率(%)=[1-1.9ppmの積分値/(1.9ppmの積分値+1.2ppmの積分値)]×100
副生物率(%)=転化率-(AmPC純度)
表2に示す原料仕込み比及び条件に変更した以外は、実施例1-1と同様に反応を行って、生成物を得、分析及び測定を行った。結果を表2に示す。
表3に示す原料仕込み比及び条件に変更した以外は、実施例1-1と同様に反応を行って、生成物を得、分析及び測定を行った。尚、触媒として実施例1-5ではジイソプロピルアミンを、実施例1-6ではトリエチルアミンを用いた。結果を表3に示す。また、実施例1-7及び実施例1-8で得られた主生成物は、分析の結果、式(1')で示される2'-[3-(2-アミノエチルスルファニル)-2-メチルプロピオニルオキシ]エチル-[2-(トリメチルアンモニオ)エチル]ホスファートであった。
実施例1-1の合成法により得たアミノ基含有ホスホリルコリン化合物を用いて、カルボン酸基を表面に持つ基材へのホスホリルコリン基導入を試みた。カルボン酸を持つ基材として、グラフト重合によって表面にアクリル酸を導入したPEフィルムを選択し、縮合剤1-エチル-3-(3-ジメチルアミノプロピル)カルボジイミド塩酸塩(WSC)を用いてアミノ基含有ホスホリルコリン化合物と反応させた。反応処理後のフィルムをX線光電子分光法(X-ray Photoelectron Spectroscopy;XPS)で調べ、ホスホリルコリン基の導入について確認した。以下にその方法を示す。
1×4cmにカットしたポリエチレンフィルムを電極間距離3cm、電極間電圧15キロボルトのコロナ放電処理装置の電極間に設置し、放電処理を行った。次いで、10質量%アクリル酸水溶液中に浸漬し、脱気処理後、真空条件下、60℃で60分間グラフト重合を行った。重合後、十分に水洗することでAAグラフト化PEフィルムを得た。
15ccのポリプロピレンチューブに、0.1464mmolのWSCと、実施例1-1で合成したAmPCを0.1464mmol秤量し、イオン交換水を添加して均一に溶解させた。ここへ0.5cm×0.5cmの大きさに切断したAAグラフト化フィルムを入れた。これを攪拌が可能な恒温槽内へ投入し、30℃で24時間攪拌反応させた。反応させたフィルムを取り出し、イオン交換水5mLで3回洗浄を施し、過剰量のWSCおよび未反応のAmPCを除去した。乾燥し、ホスホリルコリン基導入フィルムを得た。
得られたフィルムについてXPSを用いて表面分析を行い、AmPCの導入率を測定した。また、ホスホリルコリン基の導入による表面親水化を確認するため、表面濡れ性の評価を実施した。
作製した0.5cm×0.5cmのフィルムサンプル表面の元素濃度をX線光電子分光法分析装置(XPS、JEOL社製JPS-9200)を用いて評価した(分析径1mm)。各サンプルについて結合エネルギーが304eV~274eV(炭素1s軌道)、419eV~389eV(リン2p3/2軌道)、155eV~125eV(窒素1s軌道)、184eV~154eV(硫黄2p3/2軌道)の分析を行い、AmPCの導入率を算出した。
AmPC導入率は、リン原子表面濃度(CP)と炭素原子表面濃度(CC)との比から以下の式(A)により算出した。
作製したフィルム(0.5cm×0.5cm)を純水100mLに30秒間浸漬したのち、ピンセットを用いて垂直に空気中へ引きあげた。このときフィルムを目視観察し、水膜層が途切れて表面が露出するまでの時間(Water break-up time;WBUT)を測定した。WBUTの値により次のようにスコアを与え、表面濡れ性を評価した。
表面濡れ性評価スコア
3点:WBUT>20秒、2点:WBUT=10~19秒、1点:WBUT=5~9秒、0点:WBUT=0~4秒。
WBUTは、その秒数が多いほど親水性の傾向が高くなる。
表4に示す、使用フィルムおよび溶媒量を変更した以外は、実施例2-1と同様に反応を行ってフィルムを得、分析及び評価を行った。結果を表4に示す。
Claims (4)
- (a)2-メタクリロイルオキシエチルホスホリルコリンと、(b)2-アミノエタンチオールと、(c)2-アミノエタンチオール塩酸塩とを、((上記(b)+上記(c))/上記(a))が1.0~3.0モル当量、かつ(上記(b)/上記(c))が0.05~1.00モル当量となる割合でアルコール存在下、反応させることを特徴とする請求項1記載のアミノ基含有ホスホリルコリン化合物の製造方法。
- (a)2-メタクリロイルオキシエチルホスホリルコリンと、(b)2-アミノエタンチオール又は(c)2-アミノエタンチオール塩酸塩とを、((上記(b)+上記(c))/上記(a))が1.0~3.0モル当量となる割合でアルコール存在下、反応させることを特徴とする請求項1記載のアミノ基含有ホスホリルコリン化合物の製造方法。
- 前記反応を触媒存在下に行うことを特徴とする請求項3記載の製造方法。
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| EP11851111.2A EP2669287B1 (en) | 2010-12-24 | 2011-12-22 | Amino group-containing phosphorylcholine, and method for producing same |
| JP2012549874A JP5846125B2 (ja) | 2010-12-24 | 2011-12-22 | アミノ基含有ホスホリルコリン化合物及びその製造方法 |
| US13/997,304 US8680314B2 (en) | 2010-12-24 | 2011-12-22 | Amino group-containing phosphorylcholine, and method for producing same |
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| JP5846125B2 (ja) | 2016-01-20 |
| US20130310591A1 (en) | 2013-11-21 |
| CN103282368B (zh) | 2015-04-08 |
| JPWO2012086762A1 (ja) | 2014-06-05 |
| US8680314B2 (en) | 2014-03-25 |
| EP2669287B1 (en) | 2015-08-05 |
| EP2669287A4 (en) | 2014-06-25 |
| EP2669287A1 (en) | 2013-12-04 |
| CN103282368A (zh) | 2013-09-04 |
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