CN104030966B - 2-(3-amino-2-oxindole alkane-3-base)-3-hydroxyl-1,4-naphthoquinone derivative and preparation method thereof - Google Patents
2-(3-amino-2-oxindole alkane-3-base)-3-hydroxyl-1,4-naphthoquinone derivative and preparation method thereof Download PDFInfo
- Publication number
- CN104030966B CN104030966B CN201410278062.9A CN201410278062A CN104030966B CN 104030966 B CN104030966 B CN 104030966B CN 201410278062 A CN201410278062 A CN 201410278062A CN 104030966 B CN104030966 B CN 104030966B
- Authority
- CN
- China
- Prior art keywords
- hydroxyl
- amino
- alkane
- oxindole
- base
- 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.)
- Expired - Fee Related
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 44
- JXDYKVIHCLTXOP-UHFFFAOYSA-N isatin Chemical class C1=CC=C2C(=O)C(=O)NC2=C1 JXDYKVIHCLTXOP-UHFFFAOYSA-N 0.000 claims abstract description 36
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- FRASJONUBLZVQX-UHFFFAOYSA-N 1,4-naphthoquinone Chemical class C1=CC=C2C(=O)C=CC(=O)C2=C1 FRASJONUBLZVQX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 8
- -1 shown in formula I Chemical class 0.000 claims abstract description 5
- 238000000967 suction filtration Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000010992 reflux Methods 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 239000002585 base Substances 0.000 claims description 61
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 16
- CSFWPUWCSPOLJW-UHFFFAOYSA-N lawsone Chemical compound C1=CC=C2C(=O)C(O)=CC(=O)C2=C1 CSFWPUWCSPOLJW-UHFFFAOYSA-N 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- KOURBIFKJIEMRK-UHFFFAOYSA-N 3-amino-1,3-dihydroindol-2-one Chemical compound C1=CC=C2C(N)C(=O)NC2=C1 KOURBIFKJIEMRK-UHFFFAOYSA-N 0.000 claims description 12
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 11
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical group N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 claims description 9
- 239000005695 Ammonium acetate Substances 0.000 claims description 9
- 229940043376 ammonium acetate Drugs 0.000 claims description 9
- 235000019257 ammonium acetate Nutrition 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 8
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 8
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 6
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 6
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 6
- 230000002378 acidificating effect Effects 0.000 claims description 4
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical group [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 claims description 4
- 229910000024 caesium carbonate Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical group CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052794 bromium Inorganic materials 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 2
- 150000002431 hydrogen Chemical class 0.000 claims 1
- 238000002330 electrospray ionisation mass spectrometry Methods 0.000 abstract description 14
- 150000001875 compounds Chemical group 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 239000012265 solid product Substances 0.000 description 18
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 13
- 238000005160 1H NMR spectroscopy Methods 0.000 description 13
- 238000006452 multicomponent reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 229960000583 acetic acid Drugs 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- IAZDPXIOMUYVGZ-WFGJKAKNSA-N Dimethyl sulfoxide Chemical compound [2H]C([2H])([2H])S(=O)C([2H])([2H])[2H] IAZDPXIOMUYVGZ-WFGJKAKNSA-N 0.000 description 2
- 230000000975 bioactive effect Effects 0.000 description 2
- 150000002475 indoles Chemical class 0.000 description 2
- 229930014626 natural product Natural products 0.000 description 2
- 201000008827 tuberculosis Diseases 0.000 description 2
- 125000000182 1,4-naphthoquinonyl group Chemical group C1(C(=CC(C2=CC=CC=C12)=O)*)=O 0.000 description 1
- ITRAKBJPMLKWIW-UHFFFAOYSA-N 4-Bromoisatin Chemical compound BrC1=CC=CC2=C1C(=O)C(=O)N2 ITRAKBJPMLKWIW-UHFFFAOYSA-N 0.000 description 1
- HFZSCCJTJGWTDZ-UHFFFAOYSA-N 5,7-dimethyl-1h-indole-2,3-dione Chemical compound CC1=CC(C)=CC2=C1NC(=O)C2=O HFZSCCJTJGWTDZ-UHFFFAOYSA-N 0.000 description 1
- MBVCESWADCIXJN-UHFFFAOYSA-N 5-Bromoisatin Chemical compound BrC1=CC=C2NC(=O)C(=O)C2=C1 MBVCESWADCIXJN-UHFFFAOYSA-N 0.000 description 1
- VAJCSPZKMVQIAP-UHFFFAOYSA-N 5-methyl-1h-indole-2,3-dione Chemical compound CC1=CC=C2NC(=O)C(=O)C2=C1 VAJCSPZKMVQIAP-UHFFFAOYSA-N 0.000 description 1
- MXLDJTXXAYVWDF-UHFFFAOYSA-N 7-(trifluoromethyl)-1h-indole-2,3-dione Chemical compound FC(F)(F)C1=CC=CC2=C1NC(=O)C2=O MXLDJTXXAYVWDF-UHFFFAOYSA-N 0.000 description 1
- CRDNMYFJWFXOCH-BUHFOSPRSA-N Couroupitine B Natural products N\1C2=CC=CC=C2C(=O)C/1=C1/C2=CC=CC=C2NC1=O CRDNMYFJWFXOCH-BUHFOSPRSA-N 0.000 description 1
- 101100391174 Dictyostelium discoideum forC gene Proteins 0.000 description 1
- 102000003979 Mineralocorticoid Receptors Human genes 0.000 description 1
- 108090000375 Mineralocorticoid Receptors Proteins 0.000 description 1
- 208000002474 Tinea Diseases 0.000 description 1
- 230000001093 anti-cancer Effects 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 230000000078 anti-malarial effect Effects 0.000 description 1
- 230000001355 anti-mycobacterial effect Effects 0.000 description 1
- 230000001857 anti-mycotic effect Effects 0.000 description 1
- 230000000702 anti-platelet effect Effects 0.000 description 1
- 230000000259 anti-tumor effect Effects 0.000 description 1
- 230000000840 anti-viral effect Effects 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 239000003430 antimalarial agent Substances 0.000 description 1
- 239000002543 antimycotic Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 229940094952 green tea extract Drugs 0.000 description 1
- 235000020688 green tea extract Nutrition 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 239000002547 new drug Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012450 pharmaceutical intermediate Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 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
- C07D209/40—Nitrogen atoms, not forming part of a nitro radical, e.g. isatin semicarbazone
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/54—Organic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Indole Compounds (AREA)
Abstract
Description
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410278062.9A CN104030966B (en) | 2014-06-20 | 2014-06-20 | 2-(3-amino-2-oxindole alkane-3-base)-3-hydroxyl-1,4-naphthoquinone derivative and preparation method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410278062.9A CN104030966B (en) | 2014-06-20 | 2014-06-20 | 2-(3-amino-2-oxindole alkane-3-base)-3-hydroxyl-1,4-naphthoquinone derivative and preparation method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104030966A CN104030966A (en) | 2014-09-10 |
CN104030966B true CN104030966B (en) | 2016-03-02 |
Family
ID=51461990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410278062.9A Expired - Fee Related CN104030966B (en) | 2014-06-20 | 2014-06-20 | 2-(3-amino-2-oxindole alkane-3-base)-3-hydroxyl-1,4-naphthoquinone derivative and preparation method thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN104030966B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105566347B (en) * | 2014-10-16 | 2017-09-15 | 中国科学院化学研究所 | A kind of method for preparing the nitrine indoline of loop coil 2 two |
CN114057624B (en) * | 2021-12-10 | 2023-09-12 | 贵州大学 | Tea-fragrant ketone spliced oxindole compound and preparation method and application thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011113060A2 (en) * | 2010-03-12 | 2011-09-15 | Trana Discovery, Inc. | Antiviral compounds and methods of use thereof |
-
2014
- 2014-06-20 CN CN201410278062.9A patent/CN104030966B/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011113060A2 (en) * | 2010-03-12 | 2011-09-15 | Trana Discovery, Inc. | Antiviral compounds and methods of use thereof |
Non-Patent Citations (5)
Title |
---|
A facile synthesis, anti-inflammatory and analgesic activity of isoxazolyl-2,3-dihydrospiro[benzo[f]isoindole-1,3"-indoline]-2",4,9-triones;Rajanarendar, E.等;《Bioorganic & Medicinal Chemistry Letters》;20130430;第23卷(第13期);第3954-3958页 * |
Arylation of lawsone through BF3-mediated coupling of its phenyliodonium ylide with activated arenes and aromatic aldehydes;Elias Glinis等;《Tetrahedron》;20100523;第66卷;第5786-5792页 * |
Chiral N-heterocyclic carbene ligands for asymmetric catalytic oxindole synthesis;Yi-Xia Jia等;《Chem.Commun.》;20080801;第4040–4042页 * |
Organocatalytic asymmetric Michael addition of unprotected 3-substituted oxindoles to 1,4-naphthoquinone;Jin-Sheng Yu等;《Beilstein Journal of Organic Chemistry》;20120823;第8卷(第157期);第1360-1365页,第1363页表2,第1360页左栏第1段 * |
Synthesis of N-Alkoxycarbonyl Ketimines Derived from Isatins and Their Application in Enantioselective Synthesis of 3-Aminooxindoles;Wenjin Yan等;《ORGANIE LETTERS》;20120427;第14卷(第10期);第2512-2515页 * |
Also Published As
Publication number | Publication date |
---|---|
CN104030966A (en) | 2014-09-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108033922B (en) | Preparation method of 3-acyl quinoxalinone derivative | |
Augustine et al. | An efficient catalytic method for the Friedländer annulation mediated by peptide coupling agent propylphosphonic anhydride (T3P®) | |
CN105732619B (en) | A kind of synthetic method of 5,6,7,8 tetrahydropyridines simultaneously [2,3 d] pyrimidines | |
Darehkordi et al. | Synthesis of new trifluoromethylated indole derivatives | |
CN104030966B (en) | 2-(3-amino-2-oxindole alkane-3-base)-3-hydroxyl-1,4-naphthoquinone derivative and preparation method thereof | |
CN106117216B (en) | A kind of method of atmospheric synthesis 6H- iso-indoles [2,1-a] indoles -6- ketone compounds | |
CN104744379A (en) | Quinazolinone compound and synthetic method thereof | |
CN106946972A (en) | A kind of ursolic acid derivative with antitumor activity and preparation method thereof | |
CN102702143B (en) | Method for preparing 2-acetylfuran | |
CN105949118A (en) | Preparation method of 2-aryl quinoline derivatives | |
CN114573512B (en) | Method for synthesizing C2-difluoro alkyl benzimidazole derivative | |
CN105693632A (en) | Preparation method of polysubstitution quinoxalin derivatives | |
CN106957237B (en) | A method of synthesis bromfenac sodium | |
CN114014805B (en) | Preparation method of trifluoromethyl 2, 4-quinoline diketone compound | |
CN113896732B (en) | Preparation method and application of anticancer drug carbamatinib | |
CN113214273B (en) | Synthesis method of tetrahydrofuran indole compound | |
CN104045592A (en) | 5-fluoroindole-2-one preparation method | |
CN113912609A (en) | Preparation method of natural alkaloid tryptanthrin and derivative thereof | |
CN104370796B (en) | A kind of preparation method of bazedoxifene acetate polymorph b | |
CN107011288A (en) | A kind of preparation method of aripiprazole intermediate 1 (2,3 dichlorophenyl) piperazine hydrochloride | |
CN106083690A (en) | A kind of preparation method of polysubstituted 3 methylene indolones | |
CN105949196A (en) | Preparation method of MER/FLT3 dual-inhibitor intermediate | |
CN107151226A (en) | A kind of preparation method of polysubstituted isoindolinone | |
CN104926723B (en) | Synthetic method of phenanthridine ketone compounds | |
CN109734667A (en) | A kind of polysubstituted imidazolium compounds and its synthetic method and application |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20200810 Address after: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 310014, Zhejiang City, No. 18 Chao Wang Road, Zhejiang University of Technology Patentee before: ZHEJIANG University OF TECHNOLOGY Effective date of registration: 20200810 Address after: Yushan Town (Xinglong) Donghuan village, Changshu City, Suzhou City, Jiangsu Province Patentee after: CHANGSHU JIANKUANG MACHINERY Co.,Ltd. Address before: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. |
|
TR01 | Transfer of patent right |
Effective date of registration: 20221227 Address after: 253600 middle section of Chuangye Road, Leling City, De Zhou City, Shandong Province Patentee after: Leling Boao foam products Co.,Ltd. Address before: 215500 Yushan Town (Xinglong) Donghuan village, Changshu City, Suzhou City, Jiangsu Province Patentee before: CHANGSHU JIANKUANG MACHINERY CO.,LTD. |
|
TR01 | Transfer of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: 2- (3-Amino-2-oxoindolane-3-yl) -3-hydroxy-1,4-naphthoquinone derivatives and their preparation method Effective date of registration: 20230601 Granted publication date: 20160302 Pledgee: China Postal Savings Bank Corporation Leling sub branch Pledgor: Leling Boao foam products Co.,Ltd. Registration number: Y2023980042497 |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 |
|
CF01 | Termination of patent right due to non-payment of annual fee |