CN109384811A - A kind of preparation method of L-glufosinate-ammonium - Google Patents

A kind of preparation method of L-glufosinate-ammonium Download PDF

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Publication number
CN109384811A
CN109384811A CN201710651257.7A CN201710651257A CN109384811A CN 109384811 A CN109384811 A CN 109384811A CN 201710651257 A CN201710651257 A CN 201710651257A CN 109384811 A CN109384811 A CN 109384811A
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ammonium
glufosinate
preparation
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acl
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CN109384811B (en
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谢新开
黄晓飞
徐伟
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Hunan lier Biotechnology Co.,Ltd.
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Sichuan Lier Biotechnology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02Phosphorus compounds
    • C07F9/28Phosphorus compounds with one or more P—C bonds
    • C07F9/30Phosphinic acids [R2P(=O)(OH)]; Thiophosphinic acids ; [R2P(=X1)(X2H) (X1, X2 are each independently O, S or Se)]
    • C07F9/301Acyclic saturated acids which can have further substituents on alkyl
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P13/00Preparation of nitrogen-containing organic compounds
    • C12P13/04Alpha- or beta- amino acids
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/55Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

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Abstract

Glufosinate-ammonium nitrile amine intermediate cheap and easy to get is hydrolyzed with biological enzyme the invention discloses a kind of, one pot is changed the method for obtaining the L-glufosinate-ammonium of single configuration.Specific step is as follows for above-mentioned hydrolytic process: step 1: the glufosinate-ammonium nitrile amine intermediate of racemization obtains the raceme of glufosinate-ammonium amide under the effect of non-selective nitrile hydratase;Step 2: L- hydroamidase selective hydrolysis L-type glufosinate-ammonium amide intermediate, obtain L-type glufosinate-ammonium phosphonate ester, at the same time, unhydrolysed D- type glufosinate-ammonium amide intermediate racemization under the action of ACL racemase is constantly converted to L-type glufosinate-ammonium amide intermediate.Single L-type glufosinate-ammonium phosphonate ester is finally obtained by this DKR process;Step 3: L-type glufosinate-ammonium phosphonate ester hydrolyzes under the action of dilute hydrochloric acid and obtains L-glufosinate-ammonium.

Description

A kind of preparation method of L-glufosinate-ammonium
Technical field
The invention belongs to bio-pharmaceuticals and technical field of biochemical industry, and in particular to a kind of preparation method of L- phosphine oxamate.
Background technique
Glufosinate-ammonium is succeeded in developing by Hirst company the eighties, and phosphonic acid herbicide is belonged to, and is that glutamine synthesis inhibits Agent, natural disposition of going out contact killing type herbicide are that a kind of wide spectrum, low toxicity, non-selective herbicide and world's second largest transgenosis are made Object herbicide-tolerant, application prospect are very wide.
Currently, glufosinate-ammonium available on the market is typically all racemic mixture.If glufosinate-ammonium product can be with L- configuration Pure optical isomer use (structural formula), the usage amount of glufosinate-ammonium can be made to reduce by 50%, this is right It is all had a very important significance in improving Atom economy, reduction use cost, mitigating environmental pressure.
Method is mainly the following about the synthesis of L-glufosinate-ammonium at present.
(1) fractionation of raceme
1. chemical resolution
Hirst company (US5767309) uses quinine to be split as glufosinate-ammonium of the chiral resolving agent to racemization. This process is needed using expensive chiral resolving agent quinine, and the theoretical yield split only has 50%, this leads to this road The industrial value of line is relatively low;In addition, the step of fractionation is very cumbersome, needs to undergo into salt, induction crystallization, solution salt, Big inconvenience is brought to industrial production;
2. bioanalysis is split
Chinese patent (CN104558033A) reports the glufosinate-ammonium-using thermophilic nicotine arthrobacterium ester hydrolase to racemization N- carboxylic acid anhydrides carries out selective hydrolysis, prepares optically pure L-glufosinate-ammonium.Although the method can obtain optically pure L- grass ammonium Phosphine, but its total recovery is lower to cause its industrialized value relatively low.Its reaction equation is as follows:
(2) asymmetric syntheses
1. Japanese Scientists reported (J.Org.Chem, 1991,56,1783-1788) in 1991, asymmetry is utilized Hydrogenation has synthesized L-glufosinate-ammonium, and total reaction equation is as follows:
There are following disadvantages for the method: moiety intermediate water solubility is very strong, and separating-purifying is difficult;The asymmetry of double bond Reduction needs to use expensive noble metal and ligand, uneconomical;The enantioselectivity of product is low (only 84%ee), total receipts of reaction Rate is lower (only 26.7%).Therefore this method industrial applications is relatively difficult.
2. Chinese patent (CN105603015A) is reported with the transaminase-catalyzed preparation L- glufosinate-ammonium of biology, total is anti- Answer equation as follows:
There are following disadvantages for the method: substrate synthesis is difficult, and reaction needs the donor with transaminase, coenzyme and amine Etc. multiple co-factors, there is no advantage in cost.
3. Chinese patent (CN104558033A) is reported, with chiral phase-transfer catalyst, (cinchonine fourth chiral quaternary ammonium salt spreads out Biology), it is catalyzed the addition of methyl second dilute base phosphonate ester and benzylidene glycine.The hydrolysis that addition product passes through hydrochloric acid again obtains L- Glufosinate-ammonium, total reaction equation are as follows:
The method is needed using a large amount of expensive chiral phase-transfer catalyst, and the total recovery reacted is relatively low, Resulting cost is higher, without industrialized application prospect.
(3) it is set out with chiral amino acid, is synthetically prepared L-glufosinate-ammonium by multistep.
(Chinese Chemical Letters, 2006,17,177-179) is reported within 1996, logical from methionine The chemical synthesis for crossing multistep prepares L-glufosinate-ammonium, and total reaction equation is as follows:
The method needs using expensive methionine to be starting material, and reacts that synthetic route is longer, total receipts Rate is relatively low, higher cost, without industrialized application prospect.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of new method of simple and easy synthesis L-glufosinate-ammonium, institutes It is as follows to state chiral L-glufosinate-ammonium structural formula:
Glufosinate-ammonium nitrile amine intermediate cheap and easy to get is hydrolyzed with biological enzyme the invention discloses a kind of, one pot of change obtains The method of the L-glufosinate-ammonium of single configuration, reaction equation are as follows:
In particular:
By intermediateIn water phase, enzymic catalytic reaction is obtainedSelectively water again It solves (when R is not H), one pot of change obtains L-glufosinate-ammoniumWherein, R is selected from H or phosphonic acid base protecting group.
Above-mentioned hydrolytic process is related to fractionation (DKR) process of Dynamic Kinetic, and reaction equation is as follows:In particular:
Step 1: the glufosinate-ammonium nitrile amine intermediate of racemization obtains glufosinate-ammonium amide under the effect of non-selective nitrile hydratase Raceme;
Step 2: L- hydroamidase selective hydrolysis L-type glufosinate-ammonium amide intermediate obtains L-type glufosinate-ammonium phosphine Acid esters, at the same time, racemization under the action of ACL racemase of unhydrolysed D- type glufosinate-ammonium amide intermediate is constantly converted For L-type glufosinate-ammonium amide intermediate.Single L-type glufosinate-ammonium phosphonate ester is finally obtained by this DKR process;
Step 3: L-type glufosinate-ammonium phosphonate ester hydrolyzes under the action of dilute hydrochloric acid and obtains L-glufosinate-ammonium.
Method of the invention finally can be up to 87% total recovery, 98% enantioselectivity (Ee) obtains L- grass ammonium Phosphine.
Wherein, Ee=L- glufosinate-ammonium/[L-glufosinate-ammonium+D- glufosinate-ammonium].
In above-mentioned reaction, the phosphonic acid base protecting group is selected from C1-C6 alkyl, aryl, preferably ethyl, normal-butyl, phenyl.
Preferably, coenzyme of the phosphopyridoxal pyridoxal phosphate as ACL racemase is added in reaction process;
Preferably, the order of addition of enzyme is followed successively by nitrile hydratase, L- hydroamidase and ACL racemase or phosphoric acid pyrrole is trembled Aldehyde, nitrile hydratase, L- hydroamidase and ACL racemase;
Preferably, the nitrile hydratase is purchased from Suzhou pilotage Biotechnology Co., Ltd, goods number YH1603;
Preferably, the ACL racemase is purchased from Suzhou pilotage Biotechnology Co., Ltd, goods number YH1507;
Preferably, the L- hydroamidase is purchased from Suzhou pilotage Biotechnology Co., Ltd, goods number YH1411;
Preparation method of the invention is easy to operate, is continuous one pot of change reaction, without separating any intermediate;It should Method carries out in water phase, does not need using any organic solvent, very green, environmental protection.In addition, the method considerably reduces The cost of production, it is easy to accomplish industrialization.
Specific embodiment
With reference to embodiments, the present invention is further described in detail, but not limited to this.
It should be noted that chirality L-glufosinate-ammonium structural formula described in embodiment 1-3 is as follows:
Response path are as follows:
Embodiment 1:(R=Et)
Glufosinate-ammonium nitrile amine intermediate 760mg (4mmol) is taken to be dissolved in 40mlPBS buffer (0.2M, pH=8.0) solution. Phosphopyridoxal pyridoxal phosphate 20mg is sequentially added into reaction solution, the nitrile hydratase 50mg being dissolved in 1ml water is (raw purchased from Suzhou pilotage Object Science and Technology Ltd., goods number YH1603, only provide herein one of model product illustrated it is of the invention Effect), the L- hydroamidase 38mg being dissolved in 1ml water (is purchased from Suzhou pilotage Biotechnology Co., Ltd, goods number is YH1411, the product for only providing one of model herein are illustrated effect of the invention), the ACL being dissolved in 1ml water disappears It revolves enzyme 76mg and (is purchased from Suzhou pilotage Biotechnology Co., Ltd, goods number YH1507 only provides one of model herein Product illustrated effect of the invention).Charging finishes, and system is reacted after being warming up to 30 DEG C, 8 hours to be completed.Toward reactant 20ml concentrated hydrochloric acid is added in system, is heated to reflux 1 hour.Reaction terminates, and aqueous hydrochloric acid solution is concentrated and is done, ion exchange resin is passed through Purifying obtains L-glufosinate-ammonium 629mg, yield 87%, Ee98%.
Embodiment 2:(R=n-Bu)
Glufosinate-ammonium nitrile amine intermediate 872mg (4mmol) is taken to be dissolved in 40mlPBS buffer (0.2M, pH=8.0) solution. Phosphopyridoxal pyridoxal phosphate 20mg is sequentially added into reaction solution, the nitrile hydratase 50mg being dissolved in 1ml water is (raw purchased from Suzhou pilotage Object Science and Technology Ltd., goods number YH1603, only provide herein one of model product illustrated it is of the invention Effect), the L- hydroamidase 38mg being dissolved in 1ml water (is purchased from Suzhou pilotage Biotechnology Co., Ltd, goods number is YH1411, the product for only providing one of model herein are illustrated effect of the invention), the ACL being dissolved in 1ml water disappears It revolves enzyme 87mg and (is purchased from Suzhou pilotage Biotechnology Co., Ltd, goods number YH1507 only provides one of model herein Product illustrated effect of the invention).Charging finishes, and system is reacted after being warming up to 30 DEG C, 8 hours to be completed.Toward reactant 20ml concentrated hydrochloric acid is added in system, is heated to reflux 1 hour.Reaction terminates, and aqueous hydrochloric acid solution is concentrated and is done, ion exchange resin is passed through Purifying obtains L-glufosinate-ammonium 593mg, yield 82%, Ee97%.
Embodiment 3:(R=H)
Glufosinate-ammonium nitrile amine intermediate 648mg (4mmol) is taken to be dissolved in 40mlPBS buffer (0.2M, pH=8.0) solution. Phosphopyridoxal pyridoxal phosphate 20mg is sequentially added into reaction solution, the nitrile hydratase 50mg being dissolved in 1ml water is (raw purchased from Suzhou pilotage Object Science and Technology Ltd., goods number YH1603, only provide herein one of model product illustrated it is of the invention Effect), the L- hydroamidase 38mg being dissolved in 1ml water (is purchased from Suzhou pilotage Biotechnology Co., Ltd, goods number is YH1411, the product for only providing one of model herein are illustrated effect of the invention), the ACL being dissolved in 1ml water disappears It revolves enzyme 65mg and (is purchased from Suzhou pilotage Biotechnology Co., Ltd, goods number YH1507 only provides one of model herein Product illustrated effect of the invention).Charging finishes, and system is reacted after being warming up to 30 DEG C, 8 hours to be completed.Reaction knot Beam is concentrated aqueous solution and does, obtains L-glufosinate-ammonium 513mg, yield 71%, Ee95% by ion-exchange resin purification.
Obviously, the above embodiments are merely examples for clarifying the description, rather than the restriction to embodiment.For For those of ordinary skill in the art, other various forms of variations or change can also be made on the basis of the above description It is dynamic.There is no necessity and possibility to exhaust all the enbodiments, and obvious variation extended from this or change It moves still within the protection scope of the invention.

Claims (9)

1. a kind of preparation method of L-glufosinate-ammonium, which is characterized in that by intermediateIn water phase, enzymatic is anti- It should obtainIt selectively hydrolyzes again, one pot of change obtains L-glufosinate-ammoniumWherein, R is selected from H or phosphonic acid base protecting group.
2. preparation method as described in claim 1, which is characterized in that the phosphonic acid base protecting group is selected from C1-C6 alkyl, virtue Base.
3. phosphonic acid base protecting group as claimed in claim 2, it is characterised in that the phosphonic acid base protecting group is selected from ethyl, positive fourth Base, phenyl.
4. such as the described in any item preparation methods of claim 1-2, which is characterized in that the enzyme includes nitrile hydratase, L- amide Hydrolase and ACL racemase.
5. preparation method as claimed in claim 3, which is characterized in that the enzyme further includes the coenzyme phosphoric acid pyrrole of ACL racemase It trembles aldehyde.
6. preparation method as claimed in claim 3, which is characterized in that the nitrile hydratase has purchased from Suzhou pilotage biotechnology Limit company, goods number YH1603.
7. preparation method as claimed in claim 3, which is characterized in that L- hydroamidase has purchased from Suzhou pilotage biotechnology Limit company, goods number YH1411.
8. preparation method as claimed in claim 3, which is characterized in that the ACL racemase is purchased from Suzhou pilotage biotechnology Co., Ltd, goods number YH1507.
9. preparation method as claimed in claim 3, which is characterized in that hydrolysis carries out in dilute hydrochloric acid solution.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112391438A (en) * 2019-08-13 2021-02-23 四川利尔生物科技有限公司 Production method of L-glufosinate-ammonium or salt thereof
CN112940031A (en) * 2021-02-01 2021-06-11 河北威远生物化工有限公司 N-naphthyl-acetyl-glufosinate-ammonium, synthesis method thereof and synthesis method for synthesizing L-glufosinate-ammonium by using N-naphthyl-acetyl-glufosinate-ammonium
CN113462730A (en) * 2020-03-31 2021-10-01 江苏扬农化工股份有限公司 Method for preparing L-glufosinate-ammonium by double-enzyme combination
WO2022077989A1 (en) * 2020-10-14 2022-04-21 利尔化学股份有限公司 Method for preparing l-glufosinate
WO2023109757A1 (en) * 2021-12-13 2023-06-22 利尔化学股份有限公司 L-glufosinate derivative, composition comprising same, preparation method therefor and use thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5618728A (en) * 1994-06-26 1997-04-08 Hoechst Schering Agrevo Gmbh Process for the enzymatic cleavage of 2-amino-4-methyl-phosphinobutyramide derivatives
CN103275896A (en) * 2013-05-27 2013-09-04 浙江工业大学 Bacillus cereus and application for Bacillus cereus in preparation for L-glufosinate via microbial transformation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5618728A (en) * 1994-06-26 1997-04-08 Hoechst Schering Agrevo Gmbh Process for the enzymatic cleavage of 2-amino-4-methyl-phosphinobutyramide derivatives
CN103275896A (en) * 2013-05-27 2013-09-04 浙江工业大学 Bacillus cereus and application for Bacillus cereus in preparation for L-glufosinate via microbial transformation

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
ANIRBAN BANERJEE等: ""A rapid and sensitive fluorometric assay method for the determination of nitrilase activity"", 《BIOTECHNOL.APPL.BIOCHEM.》 *
王运吉等著: "《酶化工 第1版》", 31 July 1997, 大连海事大学出版社 *
苏州引航生物科技有限公司: "腈水合酶", 《HTTP://WWW.LEADBIOTECHNOLOGY.COM/PRODUCT_DETAIL.ASP?ID=1217》 *
苏州引航生物科技有限公司: "酰胺水解酶", 《HTTP://WWW.LEADBIOTECHNOLOGY.COM/PRODUCT_DETAIL.ASP?ID=1222》 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112391438A (en) * 2019-08-13 2021-02-23 四川利尔生物科技有限公司 Production method of L-glufosinate-ammonium or salt thereof
CN112391438B (en) * 2019-08-13 2023-01-13 四川利尔生物科技有限公司 Production method of L-glufosinate-ammonium or salt thereof
CN113462730A (en) * 2020-03-31 2021-10-01 江苏扬农化工股份有限公司 Method for preparing L-glufosinate-ammonium by double-enzyme combination
CN113462730B (en) * 2020-03-31 2023-08-25 江苏扬农化工股份有限公司 Method for preparing L-glufosinate-ammonium by double enzyme-linked method
WO2022077989A1 (en) * 2020-10-14 2022-04-21 利尔化学股份有限公司 Method for preparing l-glufosinate
CN114650997A (en) * 2020-10-14 2022-06-21 利尔化学股份有限公司 Preparation method of L-glufosinate-ammonium
KR20220098244A (en) * 2020-10-14 2022-07-11 라이어 케이컬 씨오., 엘티디. Method for preparing L-glufosinate
US11655265B2 (en) 2020-10-14 2023-05-23 Lier Chemical Co., Ltd. Method for preparing L-glufosinate
CN114650997B (en) * 2020-10-14 2024-04-26 利尔化学股份有限公司 Preparation method of L-glufosinate
KR102693943B1 (en) 2020-10-14 2024-08-08 라이어 케이컬 씨오., 엘티디. Method for producing L-glufosinate
CN112940031A (en) * 2021-02-01 2021-06-11 河北威远生物化工有限公司 N-naphthyl-acetyl-glufosinate-ammonium, synthesis method thereof and synthesis method for synthesizing L-glufosinate-ammonium by using N-naphthyl-acetyl-glufosinate-ammonium
WO2023109757A1 (en) * 2021-12-13 2023-06-22 利尔化学股份有限公司 L-glufosinate derivative, composition comprising same, preparation method therefor and use thereof

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