CN110621660A - 盐酸罗匹尼罗的纯化方法 - Google Patents
盐酸罗匹尼罗的纯化方法 Download PDFInfo
- Publication number
- CN110621660A CN110621660A CN201780090511.9A CN201780090511A CN110621660A CN 110621660 A CN110621660 A CN 110621660A CN 201780090511 A CN201780090511 A CN 201780090511A CN 110621660 A CN110621660 A CN 110621660A
- Authority
- CN
- China
- Prior art keywords
- ropinirole hydrochloride
- hydrochloride
- ropinirole
- stirring
- organic solvent
- 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.)
- Granted
Links
- XDXHAEQXIBQUEZ-UHFFFAOYSA-N Ropinirole hydrochloride Chemical compound Cl.CCCN(CCC)CCC1=CC=CC2=C1CC(=O)N2 XDXHAEQXIBQUEZ-UHFFFAOYSA-N 0.000 title claims abstract description 80
- UHSKFQJFRQCDBE-UHFFFAOYSA-N Ropinirole hydrochloride Natural products CCCN(CCC)CCC1=CC=CC2=C1CC(=O)N2 UHSKFQJFRQCDBE-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 229960002349 ropinirole hydrochloride Drugs 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000000746 purification Methods 0.000 title claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 35
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000003756 stirring Methods 0.000 claims abstract description 34
- 239000012044 organic layer Substances 0.000 claims abstract description 22
- 239000003960 organic solvent Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 11
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims abstract description 9
- VKDWFHAQOZYATG-UHFFFAOYSA-N N-despropyl ropinirole Chemical compound CCCNCCC1=CC=CC2=C1CC(=O)N2 VKDWFHAQOZYATG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 150000008065 acid anhydrides Chemical class 0.000 claims abstract description 6
- 239000003513 alkali Substances 0.000 claims abstract description 5
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 15
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 15
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 10
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- PASDCCFISLVPSO-UHFFFAOYSA-N benzoyl chloride Chemical compound ClC(=O)C1=CC=CC=C1 PASDCCFISLVPSO-UHFFFAOYSA-N 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 6
- 150000001266 acyl halides Chemical class 0.000 claims description 6
- 239000002585 base Substances 0.000 claims description 6
- UAOMVDZJSHZZME-UHFFFAOYSA-N diisopropylamine Chemical compound CC(C)NC(C)C UAOMVDZJSHZZME-UHFFFAOYSA-N 0.000 claims description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 6
- WETWJCDKMRHUPV-UHFFFAOYSA-N acetyl chloride Chemical compound CC(Cl)=O WETWJCDKMRHUPV-UHFFFAOYSA-N 0.000 claims description 5
- 239000012346 acetyl chloride Substances 0.000 claims description 5
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 5
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- 150000008064 anhydrides Chemical class 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- RZWZRACFZGVKFM-UHFFFAOYSA-N propanoyl chloride Chemical compound CCC(Cl)=O RZWZRACFZGVKFM-UHFFFAOYSA-N 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- NOGFHTGYPKWWRX-UHFFFAOYSA-N 2,2,6,6-tetramethyloxan-4-one Chemical compound CC1(C)CC(=O)CC(C)(C)O1 NOGFHTGYPKWWRX-UHFFFAOYSA-N 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 2
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 claims description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 125000003158 alcohol group Chemical group 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 239000000010 aprotic solvent Substances 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229940043279 diisopropylamine Drugs 0.000 claims description 2
- 150000004820 halides Chemical class 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 2
- JMMWKPVZQRWMSS-UHFFFAOYSA-N isopropanol acetate Natural products CC(C)OC(C)=O JMMWKPVZQRWMSS-UHFFFAOYSA-N 0.000 claims description 2
- 229940011051 isopropyl acetate Drugs 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- 125000004423 acyloxy group Chemical group 0.000 claims 1
- GWYFCOCPABKNJV-UHFFFAOYSA-N isovaleric acid Chemical compound CC(C)CC(O)=O GWYFCOCPABKNJV-UHFFFAOYSA-N 0.000 claims 1
- 150000001263 acyl chlorides Chemical class 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 10
- 239000002994 raw material Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 238000004128 high performance liquid chromatography Methods 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 238000006722 reduction reaction Methods 0.000 description 7
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 239000008213 purified water Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000005984 hydrogenation reaction Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 208000018737 Parkinson disease Diseases 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 208000005793 Restless legs syndrome Diseases 0.000 description 3
- -1 nitrostyrene compound Chemical class 0.000 description 3
- 238000007363 ring formation reaction Methods 0.000 description 3
- YPQAFWHSMWWPLX-UHFFFAOYSA-N 1975-50-4 Chemical compound CC1=C(C(O)=O)C=CC=C1[N+]([O-])=O YPQAFWHSMWWPLX-UHFFFAOYSA-N 0.000 description 2
- PHDOYZATHWYOJK-UHFFFAOYSA-N 2-(2-bromoethyl)benzaldehyde Chemical compound BrCCC1=CC=CC=C1C=O PHDOYZATHWYOJK-UHFFFAOYSA-N 0.000 description 2
- VDVJKASXRBDEQM-UHFFFAOYSA-N 3-(2-bromoethyl)aniline Chemical compound NC1=CC=CC(CCBr)=C1 VDVJKASXRBDEQM-UHFFFAOYSA-N 0.000 description 2
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- HEBMCVBCEDMUOF-UHFFFAOYSA-N isochromane Chemical compound C1=CC=C2COCCC2=C1 HEBMCVBCEDMUOF-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- MWDNYZPRNANTLQ-UHFFFAOYSA-N 1-ethyl-3H-indol-2-one hydrochloride Chemical compound Cl.C(C)N1C(CC2=CC=CC=C12)=O MWDNYZPRNANTLQ-UHFFFAOYSA-N 0.000 description 1
- LWIOFILTAJJDLA-UHFFFAOYSA-N 2-methyl-3-nitrophenylacetic acid Chemical compound CC1=C(CC(O)=O)C=CC=C1[N+]([O-])=O LWIOFILTAJJDLA-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 229910000085 borane Inorganic materials 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 150000001913 cyanates Chemical class 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 229910000397 disodium phosphate Inorganic materials 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- GWYFCOCPABKNJV-UHFFFAOYSA-M isovalerate Chemical compound CC(C)CC([O-])=O GWYFCOCPABKNJV-UHFFFAOYSA-M 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
- C07D209/04—Indoles; Hydrogenated indoles
- C07D209/30—Indoles; Hydrogenated indoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to carbon atoms of the hetero ring
- C07D209/32—Oxygen atoms
- C07D209/34—Oxygen atoms in position 2
Abstract
提供一种盐酸罗匹尼罗4‑2‑二正丙基胺乙基‑1,3‑二氢‑2H‑吲哚‑2‑酮盐酸盐的纯化方法。该方法包括：将含有杂质A单丙基罗匹尼罗的盐酸罗匹尼罗加入水中，并加入有机溶剂，室温下搅拌溶清加入碱，搅拌后静置分层，除去水层，任选地用无水硫酸镁干燥有机层并过滤，向有机层加入酰氯或酸酐，搅拌后，浓缩有机层至干，向得到的油状物中加入有机溶剂，加入浓盐酸搅拌后得到盐酸罗匹尼罗。所述方法能够有效地除去盐酸罗匹尼罗中的杂质A，能够以较好的收率和纯度获得盐酸罗匹尼罗，从而控制杂质A使产品纯度达到药用标准。
Description
PCT国内申请，说明书已公开。
Claims (10)
- PCT国内申请，权利要求书已公开。
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/088651 WO2018227553A1 (zh) | 2017-06-16 | 2017-06-16 | 盐酸罗匹尼罗的纯化方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110621660A true CN110621660A (zh) | 2019-12-27 |
| CN110621660B CN110621660B (zh) | 2022-06-28 |
Family
ID=64659375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780090511.9A Active CN110621660B (zh) | 2017-06-16 | 2017-06-16 | 盐酸罗匹尼罗的纯化方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US10961194B2 (zh) |
| EP (1) | EP3640240B1 (zh) |
| CN (1) | CN110621660B (zh) |
| WO (1) | WO2018227553A1 (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115466209A (zh) * | 2022-09-29 | 2022-12-13 | 南通大学 | 一种罗匹尼罗环戊烷并吲哚酮杂质的合成方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005080333A1 (en) * | 2004-02-19 | 2005-09-01 | Torrent Pharmaceuticals Ltd | Process for purification of ropinirole |
| CN1909901A (zh) * | 2004-01-20 | 2007-02-07 | Usv有限公司 | 4－(2－(二丙基氨基乙基)－1,3－二氢－2h－吲哚－2－酮盐酸盐的制备方法 |
| WO2011072704A1 (en) * | 2009-12-16 | 2011-06-23 | Pharmathen S.A. | Process for the preparation of ropinirole and salts thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US156505A (en) | 1874-11-03 | Improvement in writing-desk and book-rest attachments for chairs | ||
| US4452808A (en) | 1982-12-07 | 1984-06-05 | Smithkline Beckman Corporation | 4-Aminoalkyl-2(3H)-indolones |
| GB8714371D0 (en) | 1987-06-19 | 1987-07-22 | Smith Kline French Lab | Process |
| GB9300309D0 (en) | 1993-01-08 | 1993-03-03 | Smithkline Beecham Plc | Process |
| ES2237307B1 (es) | 2003-10-14 | 2006-11-01 | Urquima, S.A. | Procedimiento para la preparacion de ropinirol. |
| US20070254941A1 (en) | 2006-04-21 | 2007-11-01 | Glenmark Pharmaceuticals Limited | Subtantially pure ropinirole hydrochloride, polymorphic form of ropinirole and process for their preparation |
-
2017
- 2017-06-16 EP EP17913313.7A patent/EP3640240B1/en active Active
- 2017-06-16 WO PCT/CN2017/088651 patent/WO2018227553A1/zh active Application Filing
- 2017-06-16 US US16/623,085 patent/US10961194B2/en active Active
- 2017-06-16 CN CN201780090511.9A patent/CN110621660B/zh active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1909901A (zh) * | 2004-01-20 | 2007-02-07 | Usv有限公司 | 4－(2－(二丙基氨基乙基)－1,3－二氢－2h－吲哚－2－酮盐酸盐的制备方法 |
| WO2005080333A1 (en) * | 2004-02-19 | 2005-09-01 | Torrent Pharmaceuticals Ltd | Process for purification of ropinirole |
| WO2011072704A1 (en) * | 2009-12-16 | 2011-06-23 | Pharmathen S.A. | Process for the preparation of ropinirole and salts thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115466209A (zh) * | 2022-09-29 | 2022-12-13 | 南通大学 | 一种罗匹尼罗环戊烷并吲哚酮杂质的合成方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3640240B1 (en) | 2020-12-09 |
| EP3640240A1 (en) | 2020-04-22 |
| CN110621660B (zh) | 2022-06-28 |
| US20200172482A1 (en) | 2020-06-04 |
| US10961194B2 (en) | 2021-03-30 |
| WO2018227553A1 (zh) | 2018-12-20 |
| EP3640240A4 (en) | 2020-04-22 |
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