WO2010032919A1 - 은 이온 용액 추출을 이용한 불포화 알킬기를 가진 락톤 화합물 정제방법 - Google Patents
은 이온 용액 추출을 이용한 불포화 알킬기를 가진 락톤 화합물 정제방법 Download PDFInfo
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- WO2010032919A1 WO2010032919A1 PCT/KR2009/004325 KR2009004325W WO2010032919A1 WO 2010032919 A1 WO2010032919 A1 WO 2010032919A1 KR 2009004325 W KR2009004325 W KR 2009004325W WO 2010032919 A1 WO2010032919 A1 WO 2010032919A1
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- lactone compound
- alkyl group
- group
- unsaturated alkyl
- silver
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/04—Breaking emulsions
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D498/12—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains three hetero rings
- C07D498/18—Bridged systems
Definitions
- the present invention relates to a process for separating lactone compounds having unsaturated alkyl groups, in particular FK506, from their structural analogues but lactone compounds having saturated alkyl groups, especially FK520, dihydroFK506, using silver ionic solutions without column chromatography.
- FK506 is a three-membered macrolide produced by fermentation of Streptomyces spp.
- FK506 is a macrolide lactone compound having immunosuppressive activity, and is used for organ transplantation, neonatal erythropoietic disease prevention, autoimmune disease, and infectious disease.
- FK506 was first reported in 1987 (J. Antibiotics, 16, No. 9, 1249-1255,1987) and is a compound sold by Astellas Pharmaceuticals. Since the development, various papers and patents have suggested various methods of separation and purification of FK506.
- FK506 fermentation products include structural analogues such as FK520 and dihydroFK506. These substances are known to be produced mainly by microorganisms, especially actinomycetes. FK506 was reported to be produced by strains such as Streptomyces, Tsukuba-N-Sys (Streptomyces tsukubaensis) 9993, genus Streptomyces ATCC55098, ATCC53770 genus Streptomyces, genus Streptomyces BICC7522 (Muramatsu, H., SI Mokhtar , M. Katsuoka and M. Ezaki. 2005. US Pat.
- Fermentation products of the FK506 production strain contains a large number of FK520 and similar structures, it is very important to remove similar substances such as FK520 to produce a high-quality medical FK506.
- US Patent No. 6,492,513 describes a method for separating the high-molecular compounds such as FK506, FK520, etc. using a sulfonic acid group-containing strong cation exchange resin pretreated with silver nitrate, etc. have.
- US Patent Publication US08 / 0000834 discloses aluminum oxide, zirconium oxide, styrene divinylbenzene copolymer, adsorption resin, cation exchange resin, anion exchange resin, reversed phase silica gel.
- a method for separating FK506 by chromatographic method using an adsorptive resin modified with silver ions on a cyanosilica gel is described.
- US Patent No. 6,576,135 discloses a separation method for a mixture of at least one alkenyl group and a lactone-containing polymer compound having an alkoxy group side chain, wherein the compound is adsorbed onto a nonionic adsorbent resin and contains silver ions.
- a method of eluting with a solvent to dissolve and eluting with activated alumina and eluting to remove a flexible material similar to FK506 from a lactone-containing polymer compound is disclosed.
- the invention has a great advantage of the separation degree of FK520 and dihydro FK506, but the production cost is very high by using a large amount of organic solvent containing expensive resin and silver ions, and also removes silver ions and nitric acid present in the used resin It is costly and time consuming and uneconomical.
- An object of the present invention is to provide a lactone compound having an unsaturated alkyl group capable of bonding with silver ions and a lactone compound having a saturated alkyl group having the same skeleton structure but not having silver ions in the intermetallic properties, in particular, solubility in solvents. And it is assumed that there is a difference in crystallization, to provide an efficient separation method without using column chromatography using expensive resin for the separation between the two kinds of compounds.
- FK506 is a useful drug for medical treatments such as autoimmune diseases, organ transplants and neonatal erythropoiesis, it is not desirable to contain impurities, and governments have guidelines on the acceptable levels of impurities in drugs. Thus, the need for a method of reducing the level of impurities in any medicament and its commercial utility is evident.
- the present inventors have a mutual interaction between a silver ion solution and a solvent between a lactone compound having an unsaturated alkyl group capable of bonding silver ions and a lactone compound having a saturated alkyl group having the same skeleton structure but not having a silver ion thereof.
- the inventors invented a simple and efficient method using silver ion solutions instead of column chromatography using expensive resins for the separation of the two types of compounds.
- the present inventors invented a method of selectively extracting two compounds from each other by using a solvent containing silver ions from a mixture of a lactone compound having an unsaturated alkyl group and a lactone compound having a saturated alkyl group.
- lactone compounds with unsaturated alkyl groups such as FK506, which have a high affinity for silver ions, are present in silver ion solutions, and analogs that have no affinity for silver ions, such as FK520, dihydroFK506, Ebermus, pimecrolimus, and rapamycin. Etc. will be present in another more soluble solvent layer that does not contain silver ions.
- the present invention includes a method for recovering high purity FK506 present in the silver ion solution obtained through the above method.
- the method of the present invention does not use column chromatography, it is easy to apply industrially, and can be purified using a small amount of solvent.
- the cost reduction effect is large due to the reuse of silver ion solution, and the process is simple.
- the purification time and manufacturing cost can be greatly reduced, while the production yield of FK506 or the like can be remarkably increased.
- Figure 2 is an HPLC analysis of the sample purified by the method of the present invention.
- the present invention relates to a method for separating and purifying a lactone compound having an unsaturated alkyl group, especially FK506, from FK520, dihydro FK506, etc. having similar molecular weight, structure, and physical properties in a simple manner without structural modification of the lactone compound.
- the present invention comprises the steps of preparing a lactone compound solution by melting the lactone compound in an organic solvent that can be mixed with water;
- It provides a method for purifying a lactone compound having an unsaturated alkyl group, comprising; 6 steps of removing the silver ions present in the extracted lactone compound having an unsaturated alkyl group and collecting the lactone compound having an unsaturated alkyl group as a crystal.
- the present invention is characterized in that the lactone compound having an unsaturated alkyl group is FK506.
- the lactone compound having a saturated alkyl group is characterized in that at least one member selected from the group consisting of FK520, dihydroFK506, everimus, pimecrolimus and rapamycin.
- the present invention is characterized in that the organic solvent that can be mixed with the water of the first step is at least one selected from the group consisting of alcohols, ketones and polar aprotic organic solvents.
- the present invention is characterized in that the organic solvent that can be mixed with the water of the first step is one or more selected from the group consisting of methanol, ethanol, isopropyl alcohol, acetone and acetonitrile.
- the present invention is characterized in that the silver ions used in the three step is at least one selected from the group consisting of silver nitrate (AgNO 3 ), silver acetate (AgCH 3 COO) and silver sulfate (AgSO 4 ).
- the silver ions used in the three step is at least one selected from the group consisting of silver nitrate (AgNO 3 ), silver acetate (AgCH 3 COO) and silver sulfate (AgSO 4 ).
- the present invention is at least one solvent selected from the group consisting of hydrocarbon, heterocyclic compounds, ethers and esters of the two-stage lactone compound poorly soluble and incompatibility with water, preferably benzene, toluene, hexane It is characterized in that at least one member selected from the group consisting of heptane, butanol and chloroform.
- the present invention may dissolve the lactone compound of the aqueous solution of silver ion of the five steps, and an organic solvent that is difficult to be mixed with water may be selected from hydrocarbons, heterocyclic compounds, ethers or esters, preferably dichloromethane, It is characterized by at least one member selected from the group consisting of ethyl acetate, isobutyl acetate, n-butyl acetate and t-butyl acetate.
- the present invention is characterized in that the NaCl aqueous solution is used to remove the silver ions in step 6.
- the present invention provides a method for reusing the silver ion solution remaining in the purification process.
- a lactone compound is dissolved in an organic solvent that can be mixed with water, and then a solvent that is difficult to be mixed with an appropriate amount of water is added.
- an aqueous solution containing silver ions is added to selectively extract the lactone compound having an unsaturated alkyl group having affinity for silver ions.
- an aqueous silver ion solution containing a lactone compound having an unsaturated alkyl group is recovered, and then a lactone compound having an unsaturated alkyl group is extracted with a lactone compound soluble organic solvent.
- silver ion removal and crystallization steps yield high purity products.
- the lactone compounds used in the present invention may have a monocyclic, bicyclic or tricyclic ring, and the compounds of the monocyclic lactone are erythromycin, leucomycin, and methimycin.
- the tricyclic ring may be a substance having the structure mentioned in US Pat. No. 5,624842 and US Pat. No. 4,894366 (see Formula 1), and rapamycin and its derivatives.
- the lactone compounds classified roughly by Chemical Formula 2 may be FK506 and dihydroFK506, FK520, or FK523 in which the R group is represented by an allyl group, a propyl group, an ethyl group, and a methyl group, respectively.
- R1 is a hydroxy group or 1- (lower alkylthio) (-lower) alkyloxy group, tri (lower) alkylsilyloxy group, lower alkyl-diphenylsilyloxy, pharmaceutically acceptable organic carboxylic acyloxy group And a pharmaceutically acceptable protected hydroxy group selected from pharmaceutically acceptable organic sulfonic acyloxy groups
- R 2 is hydrogen, a hydroxy group or a lower alkanoyloxy group
- R 3 is a methyl group, an ethyl group, a propyl group or an allyl group and n is 1 or 2
- the solid and dashed lines are single bonds or double bonds
- R3 is methyl, propyl or allyl when R1 and R2 are hydroxy groups
- n is 2 and solid and dashed lines are single bonds, respectively Groups and their pharmaceutically acceptable basic salts.
- R1 is a hydroxy group; lower alkylthioalkoxy; tri (lower) alkylsilyloxy group; lower alkyldiphenylsilyloxy group; lower alkanoyloxy group optionally substituted by carboxy group; optionally on lower cycloalkyl group moiety
- Unsaturated alkyl groups of the lactone compounds are particularly lower alkenyl groups, such as vinyl groups, propenyl groups (allyl or 1-propenyl groups), butenyl groups, isobutenyl groups, pentenyl groups, hexenyl groups, and the like. Preferably they are a vinyl group and a propenyl group.
- the saturated alkyl group of the lactone compound is a methyl group, an ethyl group, a propyl group, a butyl group, an isobutyl group, a pentyl group, a hexyl group, and the like, and more preferably an ethyl group and a propyl group.
- the solvent which can dissolve the lactone compound and be mixed with water can be alcohol, ketone or polar aprotic solvent, preferably methanol, ethanol, isopropyl alcohol, acetone, acetonitrile are selected. Can be, or a mixture thereof.
- the lactone compound poorly soluble and poorly miscible with water may be at least one selected from carbohydrates, heterocyclic compounds, ethers or esters, preferably selected from the group consisting of benzene, toluene, hexane, heptane, butanol and chloroform. It is one or more kinds.
- the concentration of the lactone compound that can be dissolved in the solvent in this step may be adjusted in various ranges, for example, in the case of FK506 and its structural analogs, it is in the range of 1 to 200 g / water-soluble organic solvent (L), preferably 25 to 150 g / L.
- L water-soluble organic solvent
- acetone is preferable. Low concentrations of lactone compound solutions are uneconomical because of the increased use of silver ions in the FK506 tablets.
- the amount of the solvent which is difficult to be mixed with water in the above step and the poorly soluble solvent of the target lactone compound is appropriately adjusted in the range of 1 to 100 times by volume ratio of the amount of the water-soluble organic solvent depending on the type of the water-soluble organic solvent and the presence or absence of the precipitation of the lactone compound.
- the hexane is preferably 5 to 20 times the amount of acetone.
- the aqueous silver ion solution used in the above step uses an aqueous solution in which a silver salt such as silver nitrate capable of supplying silver ions is dissolved in a range of 0.5 to 10 M, preferably 1 to 5 M.
- the treatment time of the silver ion solution is a time that can be sufficiently mixed, and can be from 0.5 to 24 hours, and the temperature is in the range of -10 to 50 ° C. As a preferred example, working at FK506 and its analogs at 1 to 12 hours at 10 to 40 ° C is appropriate.
- after recovering the silver ion aqueous solution layer may be repeatedly performed by adding an appropriate amount of a lactone soluble and water-soluble solvent. The degree of repetition and the amount of solvent used may vary depending on the impurity content of the final target.
- the silver ion solution used in the present invention can be reused.
- a suitable organic solvent, ie, a lactone compound may be dissolved for reuse, and the lactone compound may be separated using an organic solvent which is not mixed with water.
- FK506 FK506 as an example, FK506 present in the silver ion aqueous solution layer is extracted using ethyl acetate, and the silver ion aqueous solution separated from the ethyl acetate layer is recovered. The recovered silver ion aqueous solution can be reused.
- Lactone compounds having an alkyl group of the present invention can be obtained by microbial fermentation and can also be provided by artificial synthesis.
- a mixture of a lactone compound having an unsaturated alkyl group and a lactone compound having a saturated alkyl group in particular, a compound in which FK506 and its structural analogs FK520, dihydroFK506 and the like are partially mixed are used. .
- the concentration of silver ions, the amount and number of extraction of the silver ion aqueous solution, the miscibility with water, the purity of FK506 increases as the throughput and the number of times of the FK506 poorly soluble solvent increases Relatively, the ratio of FK520 and dihydroFK506 is reduced.
- the recovery rate of FK506 increases as the silver ion concentration increases, or when the amount of FK506 poorly soluble solvent that is non-mixable with water is smaller.
- Lactone compounds with alkyl side chains especially FK506, FK520, dihydroFK5006 mixtures for the preparation of preculture medium (0.3 g of starch oxide, 0.21 g of glycerin, 0.09 g of mifepetone, 0.09 g of yeast extract, soy peptone 0.15g, AZ-20R 0.015ml) was prepared in a 500ml flat Erlenmeyer flask and sterilized, and then inoculated with 1ml of Streptomyces GT1005 strain and incubated at 27-30 ° C and 240rpm for 36 hours.
- preculture medium 0.3 g of starch oxide, 0.21 g of glycerin, 0.09 g of mifepetone, 0.09 g of yeast extract, soy peptone 0.15g, AZ-20R 0.015ml
- 2 l of primary seed culture medium (20 g of starch oxide, 20 g of glycerin, 10 g of raw soy flour, 4 g of calcium carbonate, 10 ml of CSL (45%), 1 ml of AZ-20R, pH 6.5) was sterilized in a 5 L flat Erlenmeyer flask. 10 ml of the whole culture was inoculated and incubated for 36 hours at 27-30 ° C. 300 l secondary seed culture medium containing 6 kg of starch oxide, 3 kg of glycerin, 1.5 kg of raw soy flour, 0.6 kg of yeast extract, 0.6 kg of calcium carbonate, 1.5 L of CSL (45%), and 0.3 kg of AZ-20R.
- HP20 resin (150 L) in the culture was recovered with a nutche filter and washed with water. Acetone 500 L was used to obtain an extract containing FK506, FK520, dihydroFK506 and the like from the resin. After the same volume of water was added to the extract, 200 R of HP20 resin was adsorbed at 2 RV (Resin volume) / hr flow rate, and 75% acetone was eluted at 3 RV at 1 RV (Resin volume) / hr flow rate. HPLC analysis of the eluate showed a purity of 62% and 873.6 g of FK506 was obtained.
- the concentrated solution was dissolved in 4 L acetone, and then 12 L of water was added to form crystals at 4 ° C. for 12 hours.
- the crystals formed were filtered through a filter cloth and then dried in a 45 ° C. vacuum dryer for 6 hours. Through this process, a raw sample was obtained.
- Samples used in the following examples of the present invention was C18 column HPLC analysis, 93.3% FK506, 2.56% FK520, 0.6% dihydroFK506, the diol HPLC analysis of the same sample was the same as in Figure 1a, 92.7% FK506, Purity of 4.3% FK520, 2.1% dihydroFK506.
- the lactone mixture was dissolved in acetone, a solvent in which the sample could be completely dissolved. Hexane was added while the sample was sufficiently dissolved, and acetone and hexane were sufficiently mixed. Silver nitrate solution was added to this solution while stirring slowly. After stirring for a while, the mixture was allowed to stand and the layers were separated. The layer was separated into a lower layer containing an aqueous solution of silver ions and an upper layer containing hexane.
- the content ratio of the three major three-membered ring compounds did not change significantly in the treatment group over 3 hours.
- the yields were increased by increasing the silver ion concentration, the sample concentration, the amount of hexane used, and the amount of the silver ion aqueous solution. 4, 5, 6, 7, 10, 11), the higher the concentration of the sample used (Table 1; Test 4, 8, 9), the higher the amount of hexane used (Table 1; Test 4, 5, 6).
- the optimal silver ion solution extraction conditions inferred from this were FK506 sample concentration of 28.9 ⁇ 144.8M, hexane consumption of 5 ⁇ 10 times the volume of acetone, and silver ion concentration of 0.9 ⁇ 3.6M in silver ion solution.
- the amount used was about twice the volume of acetone.
- the lactone compound was collected from the silver ion aqueous solution extracted in the test sphere 12 of Example 2. The solution was mixed vigorously for at least 1 hour after adding two volumes of ethyl acetate to the aqueous silver ion solution. The ethyl acetate layer containing FK506 was recovered and concentrated under reduced pressure. The same volume of acetone used in the test sphere was added to the concentrated solution under reduced pressure to completely dissolve it, and then a saturated NaCl aqueous solution was added to precipitate silver ions in the form of AgCl. It was mixed with an equal volume of ethyl acetate for 1 hour or more, and then left to separate layers.
- the present invention provides a useful method for purifying lactone compounds having unsaturated alkyl groups, including FK506, and thus can be used in the medical arts.
Abstract
Description
Claims (9)
- 물과 혼합될 수 있는 유기용매에 락톤 화합물을 녹여 락톤 화합물 용액을 제조하는 1단계;상기 락톤 화합물 용액에 락톤 화합물 난용해성이며 물과 난혼합성인 유기용매를 첨가하여 혼합 용액을 제조하는 2단계;상기 2단계에서 생성된 혼합 용액에 은 이온(Ag+) 수용액을 가하여 불포화 알킬기를 가진 락톤 화합물이 은 이온 수용액으로 이동되도록 하는 3단계;상기 불포화 알킬기를 가진 락톤 화합물을 포함하는 은 이온 수용액을 유기용매층과 분리하여 회수하는 4단계;상기 회수된 은 이온 수용액 내의 불포화 알킬기를 가진 락톤 화합물을 녹일 수 있으며 물과 혼합될 수 없는 유기용매를 가하여 불포화 알킬기를 가진 락톤 화합물을 추출하는 5단계;상기 추출된 불포화 알킬기를 가진 락톤 화합물에 존재하는 은 이온을 제거하고 결정으로 불포화 알킬기를 가진 락톤 화합물을 수거하는 6단계;를 포함하는 불포화 알킬기를 가진 락톤 화합물을 정제하는 방법.
- 제1항에 있어서,상기 불포화 알킬기를 가진 락톤 화합물은 FK506인 방법.
- 제1항에 있어서,상기 1단계의 물과 혼합될 수 있는 유기용매는 알콜, 케톤 및 극성 비양자성 유기용매로 이루어진 군으로부터 선택되는 1종 이상인 방법.
- 제1항에 있어서,상기 1단계의 물과 혼합될 수 있는 유기용매는 메탄올, 에탄올, 이소프로필 알콜, 아세톤 및 아세토니트릴로 이루어진 군으로부터 선택되는 1종 이상인 방법.
- 제1항에 있어서,상기 3단계에서 사용하는 은 이온은 질산은(AgNO3), 초산은(AgCH3COOH) 및 황산은(AgSO4)으로 이루어진 군으로부터 선택되는 1종 이상인 방법.
- 제1항에 있어서,상기 2단계의 락톤 화합물 난용해성이며 물과 난혼합성인 유기용매는 벤젠, 톨루엔, 헥산, 헵탄, 부탄올 및 클로로포름으로 이루어진 군으로부터 선택되는 1종 이상인 방법.
- 제1항에 있어서,상기 5단계의 은 이온 수용액 내의 불포화 알킬기를 가진 락톤 화합물을 녹일 수 있으며 물과 혼합되기 어려운 유기용매는 다이클로로메탄, 에틸아세테이트, 이소부틸 아세테이트, n-부틸 아세테이트 및 t-부틸 아세테이트로 이루어진 군으로부터 선택되는 1종 이상인 방법.
- 제1항에 있어서,상기 6단계에서 은 이온 제거는 NaCl 수용액을 사용하는 방법.
- 제1항에 있어서,상기 정제과정에서 남은 은 이온 용액을 재사용하는 방법.
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EP09814735.8A EP2353686B1 (en) | 2008-09-18 | 2009-08-03 | Method for purifying fk506 by extraction with silver ion solution |
JP2011526801A JP5483127B2 (ja) | 2008-09-18 | 2009-08-03 | 銀イオン溶液抽出を利用した不飽和アルキル基を有するラクトン化合物の精製方法 |
US13/051,948 US8193345B2 (en) | 2008-09-18 | 2011-03-18 | Purification method of lactone compounds containing unsaturated alkyl group by extraction with silver ion solution |
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See also references of EP2353686A4 |
Also Published As
Publication number | Publication date |
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KR100910165B1 (ko) | 2009-07-30 |
EP2353686B1 (en) | 2016-11-09 |
EP2353686A1 (en) | 2011-08-10 |
JP2012502095A (ja) | 2012-01-26 |
EP2353686A4 (en) | 2012-05-09 |
US8193345B2 (en) | 2012-06-05 |
JP5483127B2 (ja) | 2014-05-07 |
US20110172413A1 (en) | 2011-07-14 |
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