GB1456828A - Chromane derivatives - Google Patents
Chromane derivativesInfo
- Publication number
- GB1456828A GB1456828A GB5929873A GB5929873A GB1456828A GB 1456828 A GB1456828 A GB 1456828A GB 5929873 A GB5929873 A GB 5929873A GB 5929873 A GB5929873 A GB 5929873A GB 1456828 A GB1456828 A GB 1456828A
- Authority
- GB
- United Kingdom
- Prior art keywords
- formula
- hydroxy group
- halide
- compound
- chromane
- 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
Links
- 125000003016 chromanyl group Chemical class O1C(CCC2=CC=CC=C12)* 0.000 title 1
- 150000001843 chromanes Chemical class 0.000 abstract 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 6
- 150000004820 halides Chemical class 0.000 abstract 5
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 abstract 4
- 150000001875 compounds Chemical class 0.000 abstract 3
- 238000009833 condensation Methods 0.000 abstract 3
- 230000005494 condensation Effects 0.000 abstract 3
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 abstract 3
- 125000005843 halogen group Chemical group 0.000 abstract 3
- 230000007062 hydrolysis Effects 0.000 abstract 3
- 238000006460 hydrolysis reaction Methods 0.000 abstract 3
- GVJHHUAWPYXKBD-IEOSBIPESA-N (R)-alpha-Tocopherol Natural products OC1=C(C)C(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-IEOSBIPESA-N 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 2
- 125000003545 alkoxy group Chemical group 0.000 abstract 2
- 229940087168 alpha tocopherol Drugs 0.000 abstract 2
- 125000003118 aryl group Chemical group 0.000 abstract 2
- 125000004104 aryloxy group Chemical group 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 125000004185 ester group Chemical group 0.000 abstract 2
- 125000001033 ether group Chemical group 0.000 abstract 2
- 238000007327 hydrogenolysis reaction Methods 0.000 abstract 2
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 abstract 2
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 abstract 2
- AOBORMOPSGHCAX-DGHZZKTQSA-N tocofersolan Chemical compound OCCOC(=O)CCC(=O)OC1=C(C)C(C)=C2O[C@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C AOBORMOPSGHCAX-DGHZZKTQSA-N 0.000 abstract 2
- 229960000984 tocofersolan Drugs 0.000 abstract 2
- 235000004835 α-tocopherol Nutrition 0.000 abstract 2
- 239000002076 α-tocopherol Substances 0.000 abstract 2
- 125000006701 (C1-C7) alkyl group Chemical group 0.000 abstract 1
- 239000001707 (E,7R,11R)-3,7,11,15-tetramethylhexadec-2-en-1-ol Substances 0.000 abstract 1
- 101000653791 Bos taurus Protein S100-A12 Proteins 0.000 abstract 1
- 239000002841 Lewis acid Substances 0.000 abstract 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 abstract 1
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- -1 alkali metal cyanide Chemical class 0.000 abstract 1
- 239000002585 base Substances 0.000 abstract 1
- 230000032050 esterification Effects 0.000 abstract 1
- 238000005886 esterification reaction Methods 0.000 abstract 1
- 238000004508 fractional distillation Methods 0.000 abstract 1
- 230000026030 halogenation Effects 0.000 abstract 1
- 238000005658 halogenation reaction Methods 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 150000007517 lewis acids Chemical class 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052987 metal hydride Inorganic materials 0.000 abstract 1
- 150000004681 metal hydrides Chemical class 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 abstract 1
- 150000004714 phosphonium salts Chemical class 0.000 abstract 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 abstract 1
- 239000002243 precursor Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B5/00—Preserving by using additives, e.g. anti-oxidants
- C11B5/0021—Preserving by using additives, e.g. anti-oxidants containing oxygen
- C11B5/0035—Phenols; Their halogenated and aminated derivates, their salts, their esters with carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/16—Preparation of halogenated hydrocarbons by replacement by halogens of hydroxyl groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
- C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
- C07C29/14—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of a —CHO group
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C59/40—Unsaturated compounds
- C07C59/42—Unsaturated compounds containing hydroxy or O-metal groups
- C07C59/52—Unsaturated compounds containing hydroxy or O-metal groups a hydroxy or O-metal group being bound to a carbon atom of a six-membered aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
- C07D311/58—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4
- C07D311/70—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4 with two hydrocarbon radicals attached in position 2 and elements other than carbon and hydrogen in position 6
- C07D311/72—3,4-Dihydro derivatives having in position 2 at least one methyl radical and in position 6 one oxygen atom, e.g. tocopherols
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K15/00—Anti-oxidant compositions; Compositions inhibiting chemical change
- C09K15/04—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds
- C09K15/06—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K15/00—Anti-oxidant compositions; Compositions inhibiting chemical change
- C09K15/04—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds
- C09K15/06—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing oxygen
- C09K15/08—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing oxygen containing a phenol or quinone moiety
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M1/00—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
- C10M1/08—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants with additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Emergency Medicine (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Pyrane Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Plural Heterocyclic Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Edible Oils And Fats (AREA)
- Anti-Oxidant Or Stabilizer Compositions (AREA)
- Fats And Perfumes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US31756672A | 1972-12-22 | 1972-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1456828A true GB1456828A (en) | 1976-11-24 |
Family
ID=23234257
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5929873A Expired GB1456828A (en) | 1972-12-22 | 1973-12-21 | Chromane derivatives |
| GB5929673A Expired GB1456827A (en) | 1972-12-22 | 1973-12-21 | Chromane derivatives |
| GB2227275A Expired GB1456830A (en) | 1972-12-22 | 1973-12-21 | Substituted undecanes |
| GB2227175A Expired GB1456829A (en) | 1972-12-22 | 1973-12-21 | Chromane derivatives |
Family Applications After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5929673A Expired GB1456827A (en) | 1972-12-22 | 1973-12-21 | Chromane derivatives |
| GB2227275A Expired GB1456830A (en) | 1972-12-22 | 1973-12-21 | Substituted undecanes |
| GB2227175A Expired GB1456829A (en) | 1972-12-22 | 1973-12-21 | Chromane derivatives |
Country Status (21)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0411813A1 (en) * | 1989-08-04 | 1991-02-06 | Pfizer Inc. | Optical resolution method for 3S-(3-carboxybenzyl)-6-(5-fluoro-2-benzothiazolyl)methoxy-4S-chromanol |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH618695A5 (en) * | 1975-01-27 | 1980-08-15 | Hoffmann La Roche | Process for the preparation of chromane derivatives |
| DE2820861A1 (de) * | 1977-05-16 | 1978-11-23 | Hoffmann La Roche | Chromanderivate |
| EP0003484B1 (de) * | 1978-01-30 | 1981-10-14 | F. HOFFMANN-LA ROCHE & CO. Aktiengesellschaft | Verfahren zur Herstellung von Chromanderivaten |
| US4150050A (en) * | 1978-01-30 | 1979-04-17 | Hoffmann-La Roche Inc. | 3,6-Dioxo-1,4-cyclohexadien-1-yl-butandate esters |
| DE2909601A1 (de) * | 1979-03-12 | 1980-09-25 | Basf Ag | Verfahren zur herstellung von chromanderivaten |
| DE3010504A1 (de) * | 1980-03-19 | 1981-10-01 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von 2-hydroxyalkylchromanen |
| DE3010505A1 (de) * | 1980-03-19 | 1981-10-01 | Basf Ag, 6700 Ludwigshafen | Chromanderivate, verfahren zu ihrer herstellung, ihre verwendung als stabilisatoren von organischen materialien sowie diese stabilisatoren enthaltende organische materialien |
| DE3103707A1 (de) * | 1981-02-04 | 1982-08-19 | Basf Ag, 6700 Ludwigshafen | Chromanderivate |
| DE3103740A1 (de) * | 1981-02-04 | 1982-08-19 | Basf Ag, 6700 Ludwigshafen | Chromanderivate |
| JPS57136582A (en) * | 1981-02-19 | 1982-08-23 | Eisai Co Ltd | Preparation of optically active alpha-tocopherol |
| JPS57145871A (en) * | 1981-03-05 | 1982-09-09 | Eisai Co Ltd | Chromanolcarboxylic derivative |
| DE3139238A1 (de) * | 1981-10-02 | 1983-04-21 | Basf Ag, 6700 Ludwigshafen | Optisch aktive bausteine fuer die synthese der seitenkette von (r,r,r)-(alpha)-tocopherol sowie verfahren zu deren herstellung |
| EP0115142B1 (en) * | 1982-12-23 | 1986-11-05 | Ici Americas Inc. | Chroman compounds |
| ZA844519B (en) * | 1983-06-24 | 1985-02-27 | Hoffmann La Roche | Dihydrobenzopyran derivatives |
| DE3760058D1 (en) * | 1986-01-23 | 1989-04-13 | Hoffmann La Roche | 3,4-dihydro-2,5,7,8-tetramethyl-2h-1-benzopyran derivatives and processes for their preparation |
| CA2082004A1 (en) * | 1991-11-20 | 1993-05-21 | David Laffan | Substituted pentaalkylchromans |
| DE19859251A1 (de) * | 1998-12-22 | 2000-06-29 | Basf Ag | Verfahren zur Herstellung von substituierten Chromanderivaten |
| WO2002012221A1 (fr) * | 2000-08-03 | 2002-02-14 | Kuraray Co., Ltd. | Procede de resolution optique de l'acide (±)-6-hydroxy-2,5,7,8,-tetramethyle de coumarone-2-carboxylique |
| EP1710239A4 (en) * | 2004-01-30 | 2009-03-18 | Mitsubishi Gas Chemical Co | PROCESS FOR PRODUCING A CHROMIUM COMPOUND |
| KR101233223B1 (ko) * | 2004-12-21 | 2013-02-14 | 제이엔씨 석유 화학 주식회사 | 크로만환을 가지는 액정 화합물, 액정 조성물 및 이 액정조성물을 함유하는 액정 표시소자 |
| EP2522647B1 (en) * | 2011-05-10 | 2014-04-30 | DSM IP Assets B.V. | Process of separating chiral isomers of chroman compounds and their derivatives and precursors |
| NL2010010C2 (en) | 2012-12-19 | 2014-06-23 | Sulfateq B V | Compounds for protection of cells. |
| WO2021167095A1 (ja) * | 2020-02-21 | 2021-08-26 | 大日本住友製薬株式会社 | 光学分割されたトロロックス中間体およびその製造方法 |
-
1973
- 1973-12-13 ZA ZA739471*A patent/ZA739471B/xx unknown
- 1973-12-19 CH CH1777073A patent/CH605892A5/xx not_active IP Right Cessation
- 1973-12-19 CH CH1777173A patent/CH603617A5/xx not_active IP Right Cessation
- 1973-12-20 PH PH15347A patent/PH11133A/en unknown
- 1973-12-20 DD DD175557A patent/DD109624A5/xx unknown
- 1973-12-21 DE DE2364141A patent/DE2364141A1/de not_active Ceased
- 1973-12-21 AT AT1076973A patent/AT333755B/de not_active IP Right Cessation
- 1973-12-21 NL NL7317587A patent/NL7317587A/xx not_active Application Discontinuation
- 1973-12-21 GB GB5929873A patent/GB1456828A/en not_active Expired
- 1973-12-21 SE SE7317421A patent/SE406912B/xx unknown
- 1973-12-21 GB GB5929673A patent/GB1456827A/en not_active Expired
- 1973-12-21 IL IL43888A patent/IL43888A/en unknown
- 1973-12-21 BE BE139128A patent/BE808942A/xx unknown
- 1973-12-21 ES ES421683A patent/ES421683A1/es not_active Expired
- 1973-12-21 LU LU69067A patent/LU69067A1/xx unknown
- 1973-12-21 DE DE2364165A patent/DE2364165A1/de not_active Ceased
- 1973-12-21 HU HUHO1637A patent/HU168043B/hu unknown
- 1973-12-21 BE BE139129A patent/BE808943A/xx not_active IP Right Cessation
- 1973-12-21 JP JP48142527A patent/JPS5946233B2/ja not_active Expired
- 1973-12-21 JP JP48142526A patent/JPS4988876A/ja active Pending
- 1973-12-21 NL NLAANVRAGE7317590,A patent/NL178968C/xx not_active IP Right Cessation
- 1973-12-21 FR FR7346001A patent/FR2255299B1/fr not_active Expired
- 1973-12-21 AR AR251651A patent/AR200751A1/es active
- 1973-12-21 GB GB2227275A patent/GB1456830A/en not_active Expired
- 1973-12-21 SU SU1978253A patent/SU518135A3/ru active
- 1973-12-21 CA CA188,762A patent/CA1022562A/en not_active Expired
- 1973-12-21 GB GB2227175A patent/GB1456829A/en not_active Expired
- 1973-12-21 FR FR7346000A patent/FR2284604A1/fr active Granted
- 1973-12-21 IE IE2317/73A patent/IE38671B1/xx unknown
- 1973-12-22 KR KR7302219A patent/KR780000008B1/ko not_active Expired
-
1976
- 1976-11-19 CH CH1457976A patent/CH622257A5/de not_active IP Right Cessation
-
1984
- 1984-01-18 JP JP59005854A patent/JPS6026795B2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0411813A1 (en) * | 1989-08-04 | 1991-02-06 | Pfizer Inc. | Optical resolution method for 3S-(3-carboxybenzyl)-6-(5-fluoro-2-benzothiazolyl)methoxy-4S-chromanol |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |