CN108314613B - 一种达格列净异构体杂质ⅰ的制备方法 - Google Patents
一种达格列净异构体杂质ⅰ的制备方法 Download PDFInfo
- Publication number
- CN108314613B CN108314613B CN201810335379.XA CN201810335379A CN108314613B CN 108314613 B CN108314613 B CN 108314613B CN 201810335379 A CN201810335379 A CN 201810335379A CN 108314613 B CN108314613 B CN 108314613B
- Authority
- CN
- China
- Prior art keywords
- compound
- solvent
- dapagliflozin
- impurity
- follows
- 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.)
- Active
Links
- JVHXJTBJCFBINQ-ADAARDCZSA-N Dapagliflozin Chemical class C1=CC(OCC)=CC=C1CC1=CC([C@H]2[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)O)=CC=C1Cl JVHXJTBJCFBINQ-ADAARDCZSA-N 0.000 title claims abstract description 26
- 239000012535 impurity Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000002904 solvent Substances 0.000 claims abstract description 23
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 150000001875 compounds Chemical class 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 229940126062 Compound A Drugs 0.000 claims abstract description 12
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 9
- FGERXQWKKIVFQG-UHFFFAOYSA-N 5-bromo-2-chlorobenzoic acid Chemical compound OC(=O)C1=CC(Br)=CC=C1Cl FGERXQWKKIVFQG-UHFFFAOYSA-N 0.000 claims abstract description 8
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 claims abstract description 8
- RHVNHKWMQOUSLJ-UHFFFAOYSA-N methoxymethanamine;hydrochloride Chemical compound Cl.COCN RHVNHKWMQOUSLJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 6
- LVTJOONKWUXEFR-FZRMHRINSA-N protoneodioscin Natural products O(C[C@@H](CC[C@]1(O)[C@H](C)[C@@H]2[C@]3(C)[C@H]([C@H]4[C@@H]([C@]5(C)C(=CC4)C[C@@H](O[C@@H]4[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@@H](O)[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@H](CO)O4)CC5)CC3)C[C@@H]2O1)C)[C@H]1[C@H](O)[C@H](O)[C@H](O)[C@@H](CO)O1 LVTJOONKWUXEFR-FZRMHRINSA-N 0.000 claims abstract description 6
- 230000010933 acylation Effects 0.000 claims abstract description 3
- 238000005917 acylation reaction Methods 0.000 claims abstract description 3
- 239000003513 alkali Substances 0.000 claims abstract description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 29
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 15
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 15
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 claims description 10
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 8
- 229960003834 dapagliflozin Drugs 0.000 claims description 7
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 239000002585 base Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- CTSLXHKWHWQRSH-UHFFFAOYSA-N oxalyl chloride Chemical compound ClC(=O)C(Cl)=O CTSLXHKWHWQRSH-UHFFFAOYSA-N 0.000 claims description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 4
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 3
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-diisopropylethylamine Substances CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 claims description 3
- 229960001701 chloroform Drugs 0.000 claims description 3
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 claims description 2
- 229910000024 caesium carbonate Inorganic materials 0.000 claims description 2
- UHZYTMXLRWXGPK-UHFFFAOYSA-N phosphorus pentachloride Chemical compound ClP(Cl)(Cl)(Cl)Cl UHZYTMXLRWXGPK-UHFFFAOYSA-N 0.000 claims description 2
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 claims description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 6
- 239000006227 byproduct Substances 0.000 abstract description 4
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000006467 substitution reaction Methods 0.000 abstract description 2
- 238000005160 1H NMR spectroscopy Methods 0.000 description 5
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 4
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 238000005863 Friedel-Crafts acylation reaction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000004128 high performance liquid chromatography Methods 0.000 description 3
- 239000012074 organic phase Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- HBYJBBCGIIGJKX-UHFFFAOYSA-N BrC=1C=CC(=C(C(=O)C2=C(C=CC=C2)OCC)C=1)Cl Chemical compound BrC=1C=CC(=C(C(=O)C2=C(C=CC=C2)OCC)C=1)Cl HBYJBBCGIIGJKX-UHFFFAOYSA-N 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 239000007832 Na2SO4 Substances 0.000 description 2
- 108091006269 SLC5A2 Proteins 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 102000058081 Sodium-Glucose Transporter 2 Human genes 0.000 description 2
- 150000001263 acyl chlorides Chemical class 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- QAEDZJGFFMLHHQ-UHFFFAOYSA-N trifluoroacetic anhydride Chemical compound FC(F)(F)C(=O)OC(=O)C(F)(F)F QAEDZJGFFMLHHQ-UHFFFAOYSA-N 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- OEURLNJEQCLGPS-UHFFFAOYSA-N (5-bromo-2-chlorophenyl)-(4-ethoxyphenyl)methanone Chemical compound C1=CC(OCC)=CC=C1C(=O)C1=CC(Br)=CC=C1Cl OEURLNJEQCLGPS-UHFFFAOYSA-N 0.000 description 1
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 1
- 239000005695 Ammonium acetate Substances 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 102000000070 Sodium-Glucose Transport Proteins Human genes 0.000 description 1
- 108010080361 Sodium-Glucose Transport Proteins Proteins 0.000 description 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 1
- 229940043376 ammonium acetate Drugs 0.000 description 1
- 235000019257 ammonium acetate Nutrition 0.000 description 1
- 239000003472 antidiabetic agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- 229940125782 compound 2 Drugs 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 206010012601 diabetes mellitus Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002641 glycemic effect Effects 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- DLRJIFUOBPOJNS-UHFFFAOYSA-N phenetole Chemical compound CCOC1=CC=CC=C1 DLRJIFUOBPOJNS-UHFFFAOYSA-N 0.000 description 1
- 230000009103 reabsorption Effects 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/45—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by condensation
- C07C45/455—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by condensation with carboxylic acids or their derivatives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C259/00—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups
- C07C259/04—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups without replacement of the other oxygen atom of the carboxyl group, e.g. hydroxamic acids
- C07C259/10—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups without replacement of the other oxygen atom of the carboxyl group, e.g. hydroxamic acids having carbon atoms of hydroxamic groups bound to carbon atoms of six-membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/58—Preparation of carboxylic acid halides
- C07C51/60—Preparation of carboxylic acid halides by conversion of carboxylic acids or their anhydrides or esters, lactones, salts into halides with the same carboxylic acid part
Abstract
Description
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810335379.XA CN108314613B (zh) | 2018-04-16 | 2018-04-16 | 一种达格列净异构体杂质ⅰ的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810335379.XA CN108314613B (zh) | 2018-04-16 | 2018-04-16 | 一种达格列净异构体杂质ⅰ的制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108314613A CN108314613A (zh) | 2018-07-24 |
CN108314613B true CN108314613B (zh) | 2021-06-18 |
Family
ID=62897809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201810335379.XA Active CN108314613B (zh) | 2018-04-16 | 2018-04-16 | 一种达格列净异构体杂质ⅰ的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108314613B (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116041152A (zh) * | 2023-02-08 | 2023-05-02 | 河南立诺制药有限公司 | 一种达格列净溴代侧链异构体杂质的制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011053697A1 (en) * | 2009-10-30 | 2011-05-05 | Genzyme Corporation | 2-aminoindole compounds and methods for the treatment of malaria |
WO2014095672A1 (en) * | 2012-12-19 | 2014-06-26 | Basf Se | Substituted [1,2,4]triazole compounds and their use as fungicides |
CN105061373A (zh) * | 2015-09-06 | 2015-11-18 | 合肥华方医药科技有限公司 | 一种达格列净异构体杂质的合成方法 |
-
2018
- 2018-04-16 CN CN201810335379.XA patent/CN108314613B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011053697A1 (en) * | 2009-10-30 | 2011-05-05 | Genzyme Corporation | 2-aminoindole compounds and methods for the treatment of malaria |
WO2014095672A1 (en) * | 2012-12-19 | 2014-06-26 | Basf Se | Substituted [1,2,4]triazole compounds and their use as fungicides |
CN105061373A (zh) * | 2015-09-06 | 2015-11-18 | 合肥华方医药科技有限公司 | 一种达格列净异构体杂质的合成方法 |
Also Published As
Publication number | Publication date |
---|---|
CN108314613A (zh) | 2018-07-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107556302B (zh) | 一种制备依帕列净的方法 | |
CN109879826A (zh) | 一种异噁唑啉类杀虫剂的制备方法 | |
CN108314613B (zh) | 一种达格列净异构体杂质ⅰ的制备方法 | |
CN115521337A (zh) | 一种瑞德西韦中间体的合成方法 | |
CN106188190A (zh) | 一种托格列净一水合物的制备方法 | |
CN108503610B (zh) | 一种光学纯的(r)-4-正丙基-二氢呋喃-2(3h)-酮的制备方法 | |
CN111233931B (zh) | 一种瑞德西韦的合成方法 | |
CN112645833A (zh) | 一种(s)-2,6-二氨基-5-氧己酸的合成方法 | |
CN115651022A (zh) | 一种高纯度瑞德西韦中间体的合成方法 | |
CN110981851A (zh) | 一种卡格列净杂质的制备方法 | |
CN102286036A (zh) | 红景天苷的合成方法 | |
CN107056730B (zh) | 一种盐酸安非他酮缓释片杂质异构体的合成方法及其应用 | |
Banik et al. | Stereospecific novel glycosylation of hydroxy β-lactams via iodine-catalyzed reaction: a new method for optical resolution | |
CN106554333B (zh) | 一种药物中间体的合成方法 | |
EP1908747B1 (en) | Process for producing optically active 2-hydroxybutyric ester | |
CN114436824A (zh) | 一种洛索洛芬钠降解杂质的制备方法 | |
CN103848874B (zh) | 合成1,3,4,6-四乙酰基-l-古罗糖的方法 | |
CN106699701B (zh) | 1-o-甲基-2,3-二脱氧-l-阿拉伯呋喃糖的制备方法 | |
CN106432059A (zh) | 一种3-羟基哌啶和其衍生物的制备方法及其中间体 | |
CN112979736B (zh) | 一种瑞德西韦的制备方法 | |
CN116903468B (zh) | 一种米洛巴林中间体的制备方法 | |
WO2001072698A1 (en) | Optically active cyanobutantriol derivatives and process for preparing same | |
CN106748884A (zh) | 一种比卡鲁胺中间体的制备方法 | |
CN112047959A (zh) | 一种普拉格雷开环氯代杂质的制备方法 | |
CN117756611A (zh) | 一种达格列净中间体的制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20210531 Address after: 518000 room 412, No.1 Park, Shenzhen Overseas Students (Longgang) Pioneer Park, Qinglin West Road, central city, Longcheng street, Longgang District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Xianggen biomedical Co.,Ltd. Address before: 518000 room 412, No.1 Park, Shenzhen Overseas Students (Longgang) Pioneer Park, Qinglin West Road, central city, Longcheng street, Longgang District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN SUNGENING BIOTECHNOLOGY Co.,Ltd. |
|
TA01 | Transfer of patent application right | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A preparation method of daglitazin isomer impurity I Effective date of registration: 20210914 Granted publication date: 20210618 Pledgee: Shenzhen Rural Commercial Bank Co.,Ltd. Longcheng sub branch Pledgor: Shenzhen Xianggen biomedical Co.,Ltd. Registration number: Y2021980009281 |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231215 Granted publication date: 20210618 Pledgee: Shenzhen Rural Commercial Bank Co.,Ltd. Longcheng sub branch Pledgor: Shenzhen Xianggen biomedical Co.,Ltd.|SHENZHEN SUNGENING BIOTECHNOLOGY CO.,LTD. Registration number: Y2021980009281 |
|
PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A preparation method for Dapagliflozin isomer impurity I Effective date of registration: 20231219 Granted publication date: 20210618 Pledgee: Shenzhen Rural Commercial Bank Co.,Ltd. Longcheng sub branch Pledgor: Shenzhen Xianggen biomedical Co.,Ltd. Registration number: Y2023980072562 |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right |