WO1987000171A1 - Amino acid derivatives - Google Patents
Amino acid derivatives Download PDFInfo
- Publication number
- WO1987000171A1 WO1987000171A1 PCT/DK1986/000076 DK8600076W WO8700171A1 WO 1987000171 A1 WO1987000171 A1 WO 1987000171A1 DK 8600076 W DK8600076 W DK 8600076W WO 8700171 A1 WO8700171 A1 WO 8700171A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- enyl
- formula
- thien
- compound
- methylthien
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing three or more hetero rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/20—Hypnotics; Sedatives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing three or more hetero rings
Definitions
- the present invention relates to novel N-(butenyl substituted) azaheterocyclic carboxylic acids of the general formula I
- R 1 and R2 are the same or different and each represents furanyl, thienyl, pyridyl or pyrrolyl each of which may be substituted one, two or three times by halogen
- R represents 3-carboxy ⁇ iperidin-l-yl
- GABA ⁇ -aminobutyric acid
- N-(4,4-diphenyl-3-butenyl)nipecotic acid designated SK&F 89976A
- N-(4,4-diphenyl-3-butenyl)guvacine designated SK&F 100330A
- N-(4,4-diphenyl-3-butenyl)- ⁇ -homoproline designated SK&F 100561
- N-(4-phenyl-4-(2-thienyl)-3- butenyl)nipecotic acid designated SK&F 100604J
- active inhibitors of GABA uptake designated SK&F 89976A
- N-(4,4-diphenyl-3-butenyl)guvacine designated SK&F 100330A
- N-(4,4-diphenyl-3-butenyl)- ⁇ -homoproline designated SK&F 100561
- N-(4-phenyl-4-(2-thienyl)-3- butenyl)nipecotic acid designated
- novel compounds of the general formula I stated in Claim 1 below exhibit GABA uptake inhibitory properties and exert useful pharmacological effects on the central nervous system, i.e., a selective enhancement of GABA activity. Surprisingly, these effects are superior to those of previously known compounds.
- Compounds of formula I may be used for treatment of, for example, pain, anxiety, epilepsy, certain muscular and movement disorders, other neurological disorders and as sedatives and hypnotics.
- furanyl is 2-furanyl or 3-furanyl
- thienyl is 2-thienyl or 3-thienyl
- pyridyl is 2-pyridyl
- pyrrolyl is 2-pyrrolyl or 3-pyrrolyl.
- halogen is, preferably, chloro,. bromo and fluoro.
- the lower alkyl group contains less than 8 carbon atoms, preferably less than 5 carbon atoms, and some especially preferred alkyl s are methyl and ethyl. Examples of preferred substituents R 1 and R2 are 3- methylthienyl, 4-methylthienyl and N-methylpyrrolyl.
- N-(4,4-di(pyrid-3-yl)but-3-enyl)nipecotic acid N-(4,4-di(5-methylpyrrol-2-yl)but-3-enyl)nipecotic acid
- N-(furan-2-yl)-4-(thien-2-yl)but-3-enyl)nipecotic acid N-(4-(furan-3-yl)-4-(thien-3-yl)but-3-enyl)nipecotic acid
- N-(4-(furan-2-yl)-4-(thien-3-yl)but-3-enyl)nipecotic acid N-(4-(furan-3-yl)-4-(thien-2-yl)but-3-enyl)nipecotic acid
- N-(4,4-di(furan-2-yl)but-3-enyl)guvacine N-(4,4-di(furan-3-yl)guvacine
- Compounds of formula I may exist as geometric and optical isomers and all isomers and mixtures thereof are included herein. Isomers may be separated by means of standard methods such as chromatographic techniques or fractional crystallisation.
- salts include those derived from inorganic or organic acids such as hydrochloric, hydrobromic, sulfuric, phosphoric, acetic, lactic, maleic and phthalic acid.
- salts include salts of the carboxylic acid group, for example sodium, potassium, calcium and magnesium salts and salts with a strong base such as triethylamine.
- R' has the same meaning as the above R with the proviso that the carboxy group is protected (for example, as an ester group), with a compound of the general formula III
- R 1 -C CH-CH -CH X
- R 1 and R2 are as defined in Claim 1, and X represents halogen.
- This reaction may be carried out in an inert solvent in the presence of an alkali metal carbonate, for example, potassium carbonate, for example, at reflux temperature or lower temperature, for from about 8 to 24 hours.
- the solvent may conveniently be an alcohol, acetone or N,N- dimethylformamide.
- compounds of formula I may be prepared by hydrolysis of the resulting ester, for example by refluxing a mixture of an aqueous sodium hydroxide solution and an alcohol such as methanol or ethanol for from about 1 to 4 hours.
- Compounds of formula III may be prepared by reacting the corresponding disubstituted ketones of the general formula V
- R 1 and R2 each is as defined above, with a Grignard reagent, i.e., cyclopropyl magnesium bromide, followed by ring opening and dehydration of the intermediate carbinol derivative by treatment with hydrogen bromide in acetic acid.
- a Grignard reagent i.e., cyclopropyl magnesium bromide
- Compounds of formula I are useful because they possess pharmacological activity in man.
- the compounds of formula I are useful as inhibitors of GABA uptake.
- the dosage will vary depending on the compound of formula I employed, on the mode of administration and on the therapy desired. However, in general, satisfactory results are obtained with a dosage of from about 15 mg to about 2 g of compounds of formula I, conveniently given from 1 to 5 times daily, optionally in sustained release form.
- dosage forms suitable for oral administration comprise from about 25 mg to about 1 g of the compounds of formula I admixed with a pharmaceutical carrier or diluent. No toxic effects have been observed at these levels.
- the compounds of formula I may be administered in pharmaceutically acceptable acid addition salt form.
- Such acid addition salt forms exhibit approximately the same order of activity as the free base forms.
- compositions comprising a compound of formula I or a pharmaceutically acceptable salt thereof and, usually, such compositions also contain a pharmaceutical carrier or diluent.
- the compositions of this invention may be prepared by conventional techniques to appear in conventional forms, for example, capsules or tablets.
- the pharmaceutical carrier employed may be conven ⁇ tional solid or liquid carriers. Examples of solid carriers are lactose, terra alba, sucrose, talc, gelatin, agar, pectin, acacia, magnesium stearate and stearic acid. Examples of liquid carriers are syrup, peanut oil, olive oil ⁇ and water.
- the carrier or diluent may include any time delay material well known to the art, such as glyceryl monostearate or glyceryl distearate, alone or mixed with a wax.
- a solid carrier for oral administration the preparation can be tabletted, placed in a hard gelatin capsule in powder or pellet form or in the form of a troche or lozenge.
- the amount of solid carrier will vary widely but, usually, will be from about 25 mg to about 1 g.
- a liquid carrier is used, the preparation mey appear in the form of a syrup, emulsion, soft gelatin capsule or sterile injectable liquid such as an aqueous or non-aqueous liquid suspension.
- The. pharmaceutical compositions of this invention can be made following the conventional techniques of the pharmaceutical industry involving mixing, granulating and compressing or variously mixing and dissolving the ingredients as appropriate to give the desired end product.
- the route of administration may be any route which effectively transports the active compound to the appropriate . or desired place, such as orally or parenterally, the oral route being preferred.
- Example 1 a) To a suspension of 1.3 " g of magnesium in 20 ml of anhydrous tetrahydrofuran, 8.0 g of cyclopropyl bromide in 15 ml of anhydrous tetrahydrofuran was added under nitrogen. The reaction mixture was kept under reflux for 1 hour and then cooled to ambient temperature. To the reaction mixture, 5.4 g of di(thien-2-yl)ketone dissolved in 15 ml of anhydrous tetrahydrofuran was added dropwise. After refluxing for 30 minutes, the reaction mixture was chilled and_ 35 ml of a con ⁇ centrated ammonium chloride solution was carefully added. To the resulting mixture, 50 ml of water was added and the suspension was extracted twice with 50 ml of ether. The ether extracts were washed with water, dried and evaporated leaving 7.6 g of an oil.
- the crude product was dissolved in 60 ml of acetic acid and a mixture of 30 ml of acetic acid and 15 ml of 48% hydrobromic acid was added at 5°C. The mixture was stirred for 30 minutes and then poured into 300 ml of water. The resulting emulsion was extracted twice with 100 ml of ether. The ether extracts were washed with water, dried and evaporated leaving 8.5 g of an oil.
- Example 2 A solution of 34 ml of n-butyllithium in 30 ml of anhydrous ether was cooled to -65°C under nitrogen and 5.3 ml of 3-bromothiophen in 10 ml anhydrous ether was added dropwise over a period of 10 min. The reaction mixture was stirred at -65°C for 1 hour and 2.7 ml of ethyl 4-bromo- butyrate in 10 ml of anhydrous ether was added slowly. The reaction was stirred for 4 hours while the temperature raised to -20°C. 20 ml water was added and the mixture was stirred for 5 minutes after which the aqueous layer was removed.
- the compound is thoroughly mixed with two thirds of the corn starch and granulated.
- the granules obtained are dried, mixed with the remaining ingredients and compressed into tablets.
- the obtained values are means from 2 separate experiments using 3 - 5 different concentrations of test compound.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86904114T ATE67196T1 (en) | 1985-06-26 | 1986-06-26 | AMINO ACID COMBINATIONS. |
JP61503845A JPH07103116B2 (en) | 1985-06-26 | 1986-06-26 | Amino acid derivative |
DE8686904114T DE3681441D1 (en) | 1985-06-26 | 1986-06-26 | AMINO ACID BULLETS. |
FI870810A FI89355C (en) | 1985-06-26 | 1987-02-25 | Process for the Preparation of Therapeutically Active 1-Aminobut-3-ene Compounds |
NO870781A NO168823C (en) | 1985-06-26 | 1987-02-25 | ANALOGUE PROCEDURE FOR THE PREPARATION OF THERAPEUTIC ACTIVE 1-AMINOBUT-3-ONE COMPOUNDS |
DK100887A DK156398C (en) | 1985-06-26 | 1987-02-26 | N- (4,4-Diheteroaryl-3-butenyl-substituted) azacyclic carboxylic acid derivatives |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK288385A DK288385D0 (en) | 1985-06-26 | 1985-06-26 | AMINO ACID DERIVATIVES |
DK2883/85 | 1985-06-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1987000171A1 true WO1987000171A1 (en) | 1987-01-15 |
Family
ID=8116767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DK1986/000076 WO1987000171A1 (en) | 1985-06-26 | 1986-06-26 | Amino acid derivatives |
Country Status (16)
Country | Link |
---|---|
US (1) | US5010090A (en) |
EP (1) | EP0236342B1 (en) |
JP (1) | JPH07103116B2 (en) |
AT (1) | ATE67196T1 (en) |
AU (1) | AU599326B2 (en) |
CA (1) | CA1284503C (en) |
DK (2) | DK288385D0 (en) |
ES (1) | ES8800927A1 (en) |
FI (1) | FI89355C (en) |
GR (1) | GR861650B (en) |
IE (1) | IE59084B1 (en) |
LU (1) | LU90130I2 (en) |
NZ (1) | NZ216657A (en) |
PT (1) | PT82841B (en) |
WO (1) | WO1987000171A1 (en) |
ZA (1) | ZA864608B (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5010090A (en) * | 1985-06-26 | 1991-04-23 | Novo Nordisk A/S. | N-(butenyl substituted) azaheterocyclic carboxylic acids |
WO1991007389A1 (en) * | 1989-11-22 | 1991-05-30 | Novo Nordisk A/S | N-substituted azaheterocyclic carboxylic acids and a pharmaceutical composition |
US5071859A (en) * | 1988-12-19 | 1991-12-10 | Knudsen Lars Jacob S | N-substituted azaheterocyclic carboxylic acids and pharmaceutical uses |
WO1996026929A1 (en) * | 1995-02-28 | 1996-09-06 | H. Lundbeck A/S | 4-aminotetrahydrobenzisoxazole or -isothiazole compounds |
WO1999006045A1 (en) * | 1997-08-01 | 1999-02-11 | Elan Corporation, Plc | Controlled release pharmaceutical compositions containing tiagabine |
WO2000014064A2 (en) * | 1998-09-05 | 2000-03-16 | Bdd Berolina Drug Development Ab | Gaba uptake inhibitors having a pyrrolidine structure |
EP1142584A1 (en) * | 1999-01-12 | 2001-10-10 | Takeda Chemical Industries, Ltd. | Compositions for treating frequent urination and urinary incontinence |
US6399100B1 (en) | 1997-08-01 | 2002-06-04 | Elan Corporation, Plc | Controlled release pharmaceutical compositions containing tiagabine |
CN101857591B (en) * | 2009-04-09 | 2013-06-05 | 北京京卫燕康药物研究所有限公司 | Hydrochloric acid tiagabine crystal formations and preparation method thereof |
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DK58291D0 (en) * | 1991-04-02 | 1991-04-02 | Novo Nordisk As | CRYSTALINE MATERIAL AND ITS PREPARATION |
US5962449A (en) | 1995-04-07 | 1999-10-05 | Novo Nordisk A/S | Tricyclic compounds in treating hyperalgesic conditions and NIDDM |
MX9708394A (en) * | 1995-05-05 | 1998-02-28 | Novo Nordisk As | Pharmaceutical composition containing tiagabine hydrochloride and the process for its preparation. |
US6191165B1 (en) | 1996-05-31 | 2001-02-20 | Allelix Neuroscience Inc. | Pharmaceutical for treatment of neurological and neuropsychiatric disorders |
UA52661C2 (en) * | 1996-06-14 | 2003-01-15 | Ново Нордіск А/С | AN ANHYDROUS CRYSTALLINE FORM OF R(-)-N-(4,4-di(3-methylthien-2-yl)but-3-enyl)-nipecotic acid hydrochloride |
US5958951A (en) * | 1996-06-14 | 1999-09-28 | Novo Nordiskials | Modified form of the R(-)-N-(4,4-di(3-methylthien-2-yl)but-3-enyl)-nipecotic acid hydrochloride |
US5914333A (en) * | 1996-07-31 | 1999-06-22 | Novo Nordisk A/S | Treatment of psychotic disorders |
US6288083B1 (en) * | 1998-09-04 | 2001-09-11 | Millennium Pharmaceuticals, Inc. | Chemokine receptor antagonists and methods of use therefor |
US6503926B2 (en) * | 1998-09-04 | 2003-01-07 | Millennium Pharmaceuticals, Inc. | Chemokine receptor antagonists and methods of use therefor |
US6872734B2 (en) | 2000-10-20 | 2005-03-29 | Abbott Laboratories | Use of tiagabine for treatment of diabetic neuropathy and migraine |
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WO2005092886A1 (en) * | 2004-03-29 | 2005-10-06 | Ranbaxy Laboratories Limited | Process for the preparation of amorphous form of tiagabine |
WO2006013550A2 (en) * | 2004-08-04 | 2006-02-09 | Ranbaxy Laboratories Limited | Process for preparation of piperidine carboxylic acid |
EP2258357A3 (en) | 2005-08-26 | 2011-04-06 | Braincells, Inc. | Neurogenesis with acetylcholinesterase inhibitor |
EP2275095A3 (en) | 2005-08-26 | 2011-08-17 | Braincells, Inc. | Neurogenesis by muscarinic receptor modulation |
EP2377530A3 (en) | 2005-10-21 | 2012-06-20 | Braincells, Inc. | Modulation of neurogenesis by PDE inhibition |
EP2314289A1 (en) | 2005-10-31 | 2011-04-27 | Braincells, Inc. | Gaba receptor mediated modulation of neurogenesis |
US20100216734A1 (en) | 2006-03-08 | 2010-08-26 | Braincells, Inc. | Modulation of neurogenesis by nootropic agents |
CA2651862A1 (en) | 2006-05-09 | 2007-11-22 | Braincells, Inc. | 5 ht receptor mediated neurogenesis |
WO2007134136A2 (en) | 2006-05-09 | 2007-11-22 | Braincells, Inc. | Neurogenesis by modulating angiotensin |
US20080051435A1 (en) * | 2006-08-18 | 2008-02-28 | Cephalon, Inc. | Crystalline and amorphous forms of tiagabine |
US20080064727A1 (en) * | 2006-08-18 | 2008-03-13 | Cephalon, Inc. | Crystalline forms of tiagabine hydrochloride |
JP2010502722A (en) | 2006-09-08 | 2010-01-28 | ブレインセルス,インコーポレイティド | Combinations containing 4-acylaminopyridine derivatives |
US20100184806A1 (en) | 2006-09-19 | 2010-07-22 | Braincells, Inc. | Modulation of neurogenesis by ppar agents |
US20090082401A1 (en) * | 2007-09-25 | 2009-03-26 | Protia, Llc | Deuterium-enriched tiagabine |
WO2010099217A1 (en) | 2009-02-25 | 2010-09-02 | Braincells, Inc. | Modulation of neurogenesis using d-cycloserine combinations |
CN102070624B (en) * | 2011-01-25 | 2013-04-10 | 赵学清 | Method for synthesizing tiagabine hydrochloride and method for preparing anhydrous tiagabine hydrochloride |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4383999A (en) * | 1981-05-26 | 1983-05-17 | Smithkline Beckman Corporation | Inhibition of GABA uptake by N-substituted azaheterocyclic carboxylic acids and their esters |
US4514414A (en) * | 1982-10-25 | 1985-04-30 | Smithkline Beckman Corporation | N-Substituted pyrrolidineacetic acids and their esters |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK288385D0 (en) * | 1985-06-26 | 1985-06-26 | Novo Industri As | AMINO ACID DERIVATIVES |
DE3787657T2 (en) * | 1986-01-07 | 1994-02-03 | Novo Ind A S Bagsvaerd | Amino acid derivatives. |
-
1985
- 1985-06-26 DK DK288385A patent/DK288385D0/en not_active Application Discontinuation
-
1986
- 1986-06-20 ZA ZA864608A patent/ZA864608B/en unknown
- 1986-06-24 CA CA000512333A patent/CA1284503C/en not_active Expired - Lifetime
- 1986-06-25 GR GR861650A patent/GR861650B/en unknown
- 1986-06-25 ES ES556659A patent/ES8800927A1/en not_active Expired
- 1986-06-25 NZ NZ216657A patent/NZ216657A/en unknown
- 1986-06-25 PT PT82841A patent/PT82841B/en unknown
- 1986-06-25 IE IE170286A patent/IE59084B1/en not_active IP Right Cessation
- 1986-06-26 AU AU61336/86A patent/AU599326B2/en not_active Expired
- 1986-06-26 EP EP86904114A patent/EP0236342B1/en not_active Expired - Lifetime
- 1986-06-26 JP JP61503845A patent/JPH07103116B2/en not_active Expired - Lifetime
- 1986-06-26 AT AT86904114T patent/ATE67196T1/en active
- 1986-06-26 WO PCT/DK1986/000076 patent/WO1987000171A1/en active IP Right Grant
-
1987
- 1987-02-25 FI FI870810A patent/FI89355C/en not_active IP Right Cessation
- 1987-02-26 DK DK100887A patent/DK156398C/en not_active IP Right Cessation
-
1988
- 1988-10-07 US US07/254,557 patent/US5010090A/en not_active Expired - Lifetime
-
1997
- 1997-08-29 LU LU90130C patent/LU90130I2/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4383999A (en) * | 1981-05-26 | 1983-05-17 | Smithkline Beckman Corporation | Inhibition of GABA uptake by N-substituted azaheterocyclic carboxylic acids and their esters |
US4514414A (en) * | 1982-10-25 | 1985-04-30 | Smithkline Beckman Corporation | N-Substituted pyrrolidineacetic acids and their esters |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5010090A (en) * | 1985-06-26 | 1991-04-23 | Novo Nordisk A/S. | N-(butenyl substituted) azaheterocyclic carboxylic acids |
US5071859A (en) * | 1988-12-19 | 1991-12-10 | Knudsen Lars Jacob S | N-substituted azaheterocyclic carboxylic acids and pharmaceutical uses |
WO1991007389A1 (en) * | 1989-11-22 | 1991-05-30 | Novo Nordisk A/S | N-substituted azaheterocyclic carboxylic acids and a pharmaceutical composition |
US6174909B1 (en) | 1995-02-28 | 2001-01-16 | H. Lundbeck A/S | 4-aminotetrahydrobenzisoxazole or -isothiazole compounds |
WO1996026929A1 (en) * | 1995-02-28 | 1996-09-06 | H. Lundbeck A/S | 4-aminotetrahydrobenzisoxazole or -isothiazole compounds |
US5998613A (en) * | 1995-02-28 | 1999-12-07 | H. Lundbeck A/S | 4-aminotetrahydrobenzisoxazole or -isothiazole compounds |
WO1999006045A1 (en) * | 1997-08-01 | 1999-02-11 | Elan Corporation, Plc | Controlled release pharmaceutical compositions containing tiagabine |
US6399100B1 (en) | 1997-08-01 | 2002-06-04 | Elan Corporation, Plc | Controlled release pharmaceutical compositions containing tiagabine |
WO2000014064A2 (en) * | 1998-09-05 | 2000-03-16 | Bdd Berolina Drug Development Ab | Gaba uptake inhibitors having a pyrrolidine structure |
WO2000014064A3 (en) * | 1998-09-05 | 2000-07-20 | Klaus Wanner | Gaba uptake inhibitors having a pyrrolidine structure |
EP1142584A1 (en) * | 1999-01-12 | 2001-10-10 | Takeda Chemical Industries, Ltd. | Compositions for treating frequent urination and urinary incontinence |
EP1142584A4 (en) * | 1999-01-12 | 2003-04-16 | Takeda Chemical Industries Ltd | Compositions for treating frequent urination and urinary incontinence |
CN101857591B (en) * | 2009-04-09 | 2013-06-05 | 北京京卫燕康药物研究所有限公司 | Hydrochloric acid tiagabine crystal formations and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
EP0236342A1 (en) | 1987-09-16 |
AU599326B2 (en) | 1990-07-19 |
JPS62503172A (en) | 1987-12-17 |
ES8800927A1 (en) | 1987-12-01 |
FI870810A0 (en) | 1987-02-25 |
ES556659A0 (en) | 1987-12-01 |
ATE67196T1 (en) | 1991-09-15 |
DK156398C (en) | 1990-01-08 |
PT82841B (en) | 1989-01-17 |
CA1284503C (en) | 1991-05-28 |
IE861702L (en) | 1986-12-26 |
EP0236342B1 (en) | 1991-09-11 |
IE59084B1 (en) | 1994-01-12 |
ZA864608B (en) | 1987-02-25 |
JPH07103116B2 (en) | 1995-11-08 |
LU90130I2 (en) | 1997-10-24 |
DK156398B (en) | 1989-08-14 |
DK100887A (en) | 1987-02-26 |
FI870810A (en) | 1987-02-25 |
AU6133686A (en) | 1987-01-30 |
FI89355C (en) | 1993-09-27 |
GR861650B (en) | 1986-10-30 |
US5010090A (en) | 1991-04-23 |
FI89355B (en) | 1993-06-15 |
PT82841A (en) | 1986-07-01 |
DK288385D0 (en) | 1985-06-26 |
DK100887D0 (en) | 1987-02-26 |
NZ216657A (en) | 1989-10-27 |
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