WO2017182853A1 - Procédé perfectionné pour la préparation de linézolide - Google Patents
Procédé perfectionné pour la préparation de linézolide Download PDFInfo
- Publication number
- WO2017182853A1 WO2017182853A1 PCT/IB2016/053003 IB2016053003W WO2017182853A1 WO 2017182853 A1 WO2017182853 A1 WO 2017182853A1 IB 2016053003 W IB2016053003 W IB 2016053003W WO 2017182853 A1 WO2017182853 A1 WO 2017182853A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- formula
- compound
- preparation
- isoindole
- dione
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- DOBCCCCDMABCIV-UHFFFAOYSA-N CC(CN1C)OC1=O Chemical compound CC(CN1C)OC1=O DOBCCCCDMABCIV-UHFFFAOYSA-N 0.000 description 1
- HRUIKJXDWWBRMM-UHFFFAOYSA-N C[BrH]CC1OC1 Chemical compound C[BrH]CC1OC1 HRUIKJXDWWBRMM-UHFFFAOYSA-N 0.000 description 1
- IQPFJJUUCHRVML-ALCCZGGFSA-N O=C(c1c2cccc1)N(/C=C1\OC1)C2=O Chemical compound O=C(c1c2cccc1)N(/C=C1\OC1)C2=O IQPFJJUUCHRVML-ALCCZGGFSA-N 0.000 description 1
- DUILGEYLVHGSEE-UHFFFAOYSA-N O=C(c1c2cccc1)N(CC1OC1)C2=O Chemical compound O=C(c1c2cccc1)N(CC1OC1)C2=O DUILGEYLVHGSEE-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
- C07D263/02—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings
- C07D263/08—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D263/16—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D263/18—Oxygen atoms
- C07D263/20—Oxygen atoms attached in position 2
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/06—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
- C07D413/06—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
Definitions
- the present invention relates to an improved process for the preparation of Linezolid. More specifically, the present invention relates to an improved process for preparing(S)-N-[[3-[3-fluoro-4-[4-morpholinyl]phenyl]-2-oxo-5-oxazolidinyl]methyl] phthalimide and ( ⁇ -glycidylphthalimide intermediates, which are used in the preparation of Linezolid .
- Linezolid is a synthetic antibiotic, the first of the oxazolidinone class, used for the treatment of infections caused by multi -resistant bacteria including streptococcus and methicillin-resistant Staphylococcus aureus (MRSA).
- MRSA methicillin-resistant Staphylococcus aureus
- the antibacterial effect of oxazolidinones is by working as protein synthesis inhibitors, targeting an early step involving the binding of N-formylmethionyl-t-RNA to the ribosome.
- Linezolid is marketed by Pfizer under the trade names "Zyvox”and it is chemically known as (S)-N-[[3-(3-fluoro-4-morpholinylphenyl)-2-oxo-5-oxazolidinyl] methyl] acetamide having the formula (I).
- Linezolid is first disclosed in U.S. Pat. No. 5,688,792 and its process describes by using of R -glycidylbutyrate which results in the formation of (R) - N-[[3-[3-fluoro-4- morpholinyl] phenyl]-2-oxo-5-oxazolidinyl] methanol which in the subsequent stages has to be converted to various intermediary compounds to finally form Linezolid.
- the said process also encompasses intermediary azide compound, which is difficult to handle at an industrial level, which is depicted in the scheme-I given below:
- WO 1999/24393 Al discloses a process for the preparation of oxazolidinone derivatives, which is depicted in the scheme-II given below: Roxa- NH-CO-O-X!
- R OXA is phenyl substituted with one fluoro and one substituted amino group, wherein the substituted amino groups include 4-(benzyloxycarbonyl)- 1-piperazinyl, 4- morpholinyl and 4-hydroxyacetylpiperazinyl
- X l is C1-C20 alkyl
- X 2 is CI
- Br RN is C1-C5 alkyl
- WO' 393 does not disclose any specific examples or suitable conditions for the preparation of Linezolid.
- WO 2005/099353 A2 discloses a process for the preparation of Linezolid, which is depicted in the scheme-Ill given below:
- WO 2006/008754 Al discloses a process for the preparation of Linezolid, which is depicted in scheme-IV given below
- Scheme-IV discloses a process for preparing Linezolid by reacting a compound of structure (1) with a compound of structure (2) at a temperature range from ambient temperature to about 65 °C to provide a compound of structure (3), which is hydrolyzed and subsequently acylated to give Linezolid, which is depicted in the scheme-V below:
- US 5,608,110 discloses process for the preparation of 2-[(2,S)-oxiran-2-ylmethyl]-lH- isoindole-l,3(2H)-dione (I) comprising, reaction of phthalimide with (S)-(+)- epichlorohydrin under reflux in nitrogen atmosphere, ethyl acetate/hexane to get (S)-l- chloro-3-phthalimido-2-propanol which is cyclized in presence of NaH/THF.
- US 6,875,875 discloses a process for the preparation of 2-[(2,S)-oxiran-2-ylmethyl]-lH- isoindole-l,3(2H)-dione (I) comprising reaction of phthalimide with (S)- epichlorohydrin in presence of alkali metal carbonate, alkali metal hydrogen carbonate or a quaternary ammonium salt to get (,S)-l-chloro-3-phthalimido-2-propanol which is cyclized in presence of metal alkoxides.
- the main objective of the present invention is to provide cost-effective and commercially feasible process for the preparation of Linezolid.
- Another objective of the present invention is to provide a process for the preparation of (S)-N-[[3-[3-fluoro-4-[4-morpholinyl] phenyl]-2-oxo-5-oxazolidinyl] methyl] phthalimide and (3 ⁇ 4)-glycidyl phthalimide intermediates, which employs less expensive, easily available and eco-friendly reagents.
- R represents hydrogen, C1-C5 alkyl, aryl, aralkyl; with (S)-glycidyl phthalimide of formula (IX)
- R alkyl or aryl
- the organic base is primary or secondary alkyl amines having C1-C5 carbon atoms.
- R represents hydrogen, C1-C5 alkyl, aryl, aralkyl; with (S)-glycidyl phthalimide of formula (IX)
- the reaction is carried using an alkali metal iodides and in the presence or absence of a solvent at a temperature in the range of 60 to 120°C.
- the reaction is carried out for a period of 10 to 14 hours.
- the reaction is carried using a lithium tertiary butoxide used in the range 0.2-0.4 mole equivalents in presence of a suitable solvent at a temperature in the range of 40 to 100°C.
- the reaction is carried out for a period of 4 to 12 hours.
- suitable alkali metal iodides used is selected from lithium iodide, sodium iodide, potassium iodide and the like ;
- Suitable solvent used is selected from alcohols such as methanol, ethanol, isopropyl alcohol, and the like or mixture thereof; ketones, such as methyl isobutyl ketone, methyl ethyl ketone, n-butanone, and the like; halogenated solvents, such as dichloromethane, ethylene dichloride, chloroform, and the like; esters, such as ethyl acetate, n-propyl acetate, isopropyl acetate, and the like; hydrocarbon solvents, such as toluene, xylene, cyclohexane, and the like; ethers, such as 1,4-dioxane, tetrahydrofuran, and the like; and amides such as N,N-
- step b) subjecting the compound of formula(VI) with aqueous methyl amine or hydrazine hydrate, c) acylating the product of step b), and
- the reaction between formula (III) with (S)-Glycidyl phthalimide of formula(IX) is carried out in presence of suitable alkali metal iodides (or) metal hydrides and solvent at suitable temperature to give a compound of formula(VI); further it is subjected to deprotection with hydrazine hydrae (or) aqueous methyl amine to give (S)-5-Aminomethyl-3-(3-fluoro-4-morpholin-4-yl-phenyl)- oxazolidin-2-one, which is subsequently acylated with acetic anhydride or acetyl chloride to give (S)-N-[[3-(3-fluoro-4-morpholinylphenyl)-2-oxo-5- oxazolidinyljmethyl] acetamide (Linezolid) of formula I.
- the reaction between formulas (III) with (S)-Glycidyl phthalimide of formula (IX) is carried out in presence of suitable metal hydrides and solvent at suitable temperature to give a compound of formula (VI); the reaction is completed within a less span of time and provides good quantity of yield with high purity
- the alkali metal iodides is selected from lithium iodide, sodium iodide, potassium iodide and the like; metal hydrides is selected from sodium hydride, lithium hydride or magnesium hydride.
- the suitable solvent used is selected from alcohols such as methanol, ethanol, isopropyl alcohol, and the like or mixture thereof; ketones, such as methyl isobutyl ketone, methyl ethyl ketone, n-butanone, and the like; halogenated solvents, such as dichloromethane, ethylene dichloride, chloroform, and the like; esters, such as ethyl acetate, n-propyl acetate, isopropyl acetate, and the like; hydrocarbon solvents, such as toluene, xylene, cyclohexane, and the like; ethers, such as 1,4-dioxane, tetrahydrofuran, and the like; and amides such as N,N- dimethylformamide, N,N- dimethyl acetamide and the like or dimethyl sulfoxide or mixture of solvents thereof
- the present invention further involves conversion of compound of
- the acylation is carried out in presence of acetic anhydride or acetyl chloride.
- the reaction is performed at or below boiling temperature of the solvent used, more preferably between 10°C and boiling temperature of the solvent used and even more preferably at boiling temperature of the solvent used. Time required for completion of the reaction depends on factors such as solvent used and temperature at which the reaction is carried.
- the present invention relates to an improved process for the preparation of2-[(2,S)-oxiran-2-ylmethyl]-lH-isoindole-l,3(2H)-dione of formula IX comprising the steps of: a) Phthalimide reacted with (,S)-(+)-Epichlorohydrin in presence of organic base in an organic solvent at the temperature of 60° C to obtain (,S)-l-chloro-3- phthalimido-2-propanol.
- the organic base is primary or secondary alkyl amines having C1-C5 carbon atoms.
- the organic base is selected from primary or secondary alkyl amines having Ci- C5 carbon atoms such as methylamine, ethylamine, ethyl methylamine, diethylamine, dipropylamine, dibutylamine, preferably diethylamine.
- the organic solvent is selected from the group comprising of alcohols, ethers, esters, nitriles having C1-C4 carbon atoms. Preferably alcohols.
- the alcohol is selected from methanol, ethanol, propanol, isopropanol, butanol;
- the ether solvents are selected from diethyl ether, tetrahydrofuran etc.;
- the ester solvents are selected from ethyl acetate, methyl acetate, etc.;
- nitriles are selected from acetonitrile, propionitrile, butyronitrile etc.
- (,S)-l-chloro-3-phthalimido-2-propanol is cyclized in presence of alkali metal alkoxides to obtain 2-[(2,S)-oxiran-2-ylmethyl]-lH-isoindole-l,3(2H)-dione
- Cyclization is carried out in presence of alkali metal alkoxides as the procedure described in US 6,875,875.
- Linezolid produced according to the present invention may be in the form of amorphous or crystalline form I and form II.
- the compound of formula (I) or Linezolid having HPLC purity is not less than 99%.
- the present invention is simple, operation friendly and industrial applicable process. 2. The process is commercially viable and results the compounds in high yield, which makes the process cost effective
- the present invention provides high purity compound of formulas (I), (VI) and (IX) with very less impurities profile.
- reaction mixture was cooled to ambient temperature, ethyl acetate (50 ml) was added, and resultant slurry was stir for 30 min at 25-30 ° C & filtered the solid.
- the resultant crude solid was added to ethyl acetate ( 250 ml) at 25-30°C and heated to 70-75°C, stirred for 15-20 min, cooled the slurry to 25-30°C & Stir for 30 min.
- reaction mass was cooled to below 20°C, quenched with 25 ml of methanol to decompose the excess sodium hydride, distilled out solvent and added methanol (125 ml). The resulting slurry was stir for 30 min at 25-30° C and filtered.
- reaction mass was cooled to below 20°C, quenched with 25 ml of methanol to decompose the excess sodium hydride, further added methanol (125 ml) and the resulting slurry was stir for 30 min at 25-30° C and filtered.
- Methyl amine solution (50 g) was added to a mixture of methanol (100 ml), DM water (400 ml) and (5S) 2-[3-(3-Fluoro-4-mo holin-4-yl-phenyl)-2-oxo-oxazolidin-5- ylmethyl]-isoindole-l,3-dione (100 g 0.235 moles ) at 25-30°C.
- the reaction mixture was stirred, slowly raised to 80-85°C and stirred for 2-3 hours at 80-85°C.
- the reaction mixture was allowed to cool at 25-30°C; followed by addition of dichloromethane (500 ml) and stirred for 15 min to separate the layers.
- Purified water 500 ml was added to the MDC layer and mixture was acidified to pH 2.0-3.0 with dilute hydrochloric acid and stirred for 10-15 min and two layers were separated and again basified with aqueous ammonia pH 10.0-11.0. to separate the MDC layer, and it was distilled out by atmospheric pressure completely to get the residual product of (5S)-5-(amino methyl)- 3-[3-fluoro-4-(morpholin-4-yl) phenyl]-l,3-oxazolidin-2-one.
- Dichloromethane 400 ml was added to the residue and acetic anhydride (25 g) was slowly added at 25-30°C over a period of 60 min.
- reaction mixture was stirred for 60 min at 25-30°C.After completion of reaction, 5% aqueous sodium bicarbonate solution was slowly added to reaction mixture, stirred for 15 min and the two layers were separated. The dichloromethane layer was washed with D M Water (200 ml). The dichloromethane layer was filtered through hi-flow and dichl orom ethane was distilled out completely under vacuum below 40°C. Cyclohexane (500 ml) was added to the residue and heated to 45-50°C.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Plural Heterocyclic Compounds (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020177029421A KR101832115B1 (ko) | 2016-04-21 | 2016-05-23 | 리네졸리드를 제조하는 개선된 방법 |
| NZ741891A NZ741891A (en) | 2016-04-21 | 2016-05-23 | An improved process for the preparation of linezolid |
| EP16876979.2A EP3250568A4 (fr) | 2016-04-21 | 2016-05-23 | Procédé perfectionné pour la préparation de linézolide |
| AU2016403208A AU2016403208B2 (en) | 2016-04-21 | 2016-05-23 | An improved process for the preparation of Linezolid |
| RU2018109135A RU2766082C9 (ru) | 2016-04-21 | 2016-05-23 | Улучшенный процесс получения линезолида |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN201641013830 | 2016-04-21 | ||
| IN201641013830 | 2016-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017182853A1 true WO2017182853A1 (fr) | 2017-10-26 |
Family
ID=60115753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2016/053003 Ceased WO2017182853A1 (fr) | 2016-04-21 | 2016-05-23 | Procédé perfectionné pour la préparation de linézolide |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3250568A4 (fr) |
| KR (1) | KR101832115B1 (fr) |
| AU (1) | AU2016403208B2 (fr) |
| NZ (1) | NZ741891A (fr) |
| RU (1) | RU2766082C9 (fr) |
| WO (1) | WO2017182853A1 (fr) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006008754A1 (fr) * | 2004-07-20 | 2006-01-26 | Symed Labs Limited | Nouveaux intermediaires pour linezolide et composes correspondants |
| WO2011114210A2 (fr) * | 2010-03-15 | 2011-09-22 | Jubilant Life Sciences Limited | Procédés de préparation de linézolide |
| WO2012114355A1 (fr) * | 2011-02-24 | 2012-08-30 | Lee Pharma Limited | Nouveau procédé de préparation de linézolide et ses nouveaux intermédiaires |
| WO2014141067A2 (fr) * | 2013-03-14 | 2014-09-18 | Benova Labs Pvt Limited | Procédé pour la préparation de dérivés d'oxazolidinone |
| IN2013CH05865A (fr) | 2013-12-16 | 2015-06-19 | Optimus Drugs P Ltd |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2205822C2 (ru) | 1997-11-07 | 2003-06-10 | Фармация Энд Апджон Компани | Способы получения (s)-оксазолидинонов, (s)-вторичный спирт, соединение, способ получения спирта |
| WO2011137222A1 (fr) * | 2010-04-30 | 2011-11-03 | Indiana University Research And Technology Corporation | Procédés de préparation de linézolide |
| CN103420933B (zh) * | 2012-05-26 | 2016-03-02 | 鲁南制药集团股份有限公司 | 一种利奈唑胺的制备方法 |
| IN2014CH00444A (fr) | 2014-01-31 | 2015-08-07 | Optimus Drugs P Ltd |
-
2016
- 2016-05-23 EP EP16876979.2A patent/EP3250568A4/fr not_active Withdrawn
- 2016-05-23 WO PCT/IB2016/053003 patent/WO2017182853A1/fr not_active Ceased
- 2016-05-23 KR KR1020177029421A patent/KR101832115B1/ko active Active
- 2016-05-23 AU AU2016403208A patent/AU2016403208B2/en active Active
- 2016-05-23 RU RU2018109135A patent/RU2766082C9/ru active
- 2016-05-23 NZ NZ741891A patent/NZ741891A/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006008754A1 (fr) * | 2004-07-20 | 2006-01-26 | Symed Labs Limited | Nouveaux intermediaires pour linezolide et composes correspondants |
| WO2011114210A2 (fr) * | 2010-03-15 | 2011-09-22 | Jubilant Life Sciences Limited | Procédés de préparation de linézolide |
| WO2012114355A1 (fr) * | 2011-02-24 | 2012-08-30 | Lee Pharma Limited | Nouveau procédé de préparation de linézolide et ses nouveaux intermédiaires |
| WO2014141067A2 (fr) * | 2013-03-14 | 2014-09-18 | Benova Labs Pvt Limited | Procédé pour la préparation de dérivés d'oxazolidinone |
| IN2013CH05865A (fr) | 2013-12-16 | 2015-06-19 | Optimus Drugs P Ltd |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3250568A1 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2016403208B2 (en) | 2018-10-25 |
| NZ741891A (en) | 2020-05-29 |
| RU2766082C1 (ru) | 2022-02-07 |
| KR101832115B1 (ko) | 2018-02-23 |
| RU2766082C9 (ru) | 2022-02-22 |
| EP3250568A4 (fr) | 2018-08-01 |
| KR20170128485A (ko) | 2017-11-22 |
| EP3250568A1 (fr) | 2017-12-06 |
| AU2016403208A1 (en) | 2018-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7351824B2 (en) | Process for the preparation of linezolid and related compounds | |
| EP1768967B1 (fr) | Nouveaux intermediaires pour linezolide et composes correspondants | |
| US6998420B2 (en) | Oxazolidinone compounds | |
| US20080091011A1 (en) | Novel crystalline form of linezolid | |
| US9376407B2 (en) | Process for preparation of Linezolid and its novel intermediates | |
| WO2013046211A1 (fr) | Procédés de préparation du 5-chloro-n-({(5s)-2-oxo-3-[4-(3-oxo-4- morpholinyl) phényl]-1,3-oxazolidin-5-yl}méthyl)-2-thiophène-carbomaxide et de ses intermédiaires | |
| USRE47606E1 (en) | Process for the preparation of linezolid | |
| US9643939B1 (en) | Process for the preparation of linezolid | |
| AU2016403208B2 (en) | An improved process for the preparation of Linezolid | |
| WO2003093247A2 (fr) | Nouveaux agents antibacteriens | |
| US9593104B2 (en) | Process for the preparation of oxazolidinone derivatives | |
| US12312320B2 (en) | Method for synthesizing n-substituted phenyl-5-hydroxymethyl-2-oxazolidinone | |
| WO2014045292A1 (fr) | Procédé amélioré pour la préparation d'un intermédiaire de linézolide | |
| US9586913B2 (en) | Processes for the preparation of linezolid using novel intermediates | |
| WO2014170908A1 (fr) | Procédé de préparation de dérivés oxazolidinone | |
| CN102803256A (zh) | (r)-3-(3-氟-4-(1-甲基-5,6-二氢-1,2,4-三嗪-4(1h)-基)苯基)-5-(取代甲基)恶唑烷-2-酮衍生物的制备方法 | |
| WO2018055499A1 (fr) | Synthèse monotope pour la préparation d'antibactériens de phtalimido oxazolidinone substitués et de composés d'oxazolidinone anti-harombotiques à l'aide d'un catalyseur hétérogène recyclable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| REEP | Request for entry into the european phase |
Ref document number: 2016876979 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 20177029421 Country of ref document: KR Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2018109135 Country of ref document: RU |
|
| ENP | Entry into the national phase |
Ref document number: 2016403208 Country of ref document: AU Date of ref document: 20160523 Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |