CA1172255A - Methode de preparation de buspirone - Google Patents
Methode de preparation de buspironeInfo
- Publication number
- CA1172255A CA1172255A CA000386889A CA386889A CA1172255A CA 1172255 A CA1172255 A CA 1172255A CA 000386889 A CA000386889 A CA 000386889A CA 386889 A CA386889 A CA 386889A CA 1172255 A CA1172255 A CA 1172255A
- Authority
- CA
- Canada
- Prior art keywords
- formula
- azaspiro
- dione
- decane
- labeled
- 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
- 238000000034 method Methods 0.000 title claims abstract description 23
- QWCRAEMEVRGPNT-UHFFFAOYSA-N buspirone Chemical compound C1C(=O)N(CCCCN2CCN(CC2)C=2N=CC=CN=2)C(=O)CC21CCCC2 QWCRAEMEVRGPNT-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229960002495 buspirone Drugs 0.000 title abstract description 13
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- 150000005695 2-halopyrimidines Chemical class 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 16
- UNCQVRBWJWWJBF-UHFFFAOYSA-N 2-chloropyrimidine Chemical group ClC1=NC=CC=N1 UNCQVRBWJWWJBF-UHFFFAOYSA-N 0.000 claims description 8
- 239000000460 chlorine Chemical group 0.000 claims description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical group [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052794 bromium Inorganic materials 0.000 claims description 3
- 229910052801 chlorine Chemical group 0.000 claims description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 2
- ZOVNKFCHBFUAIS-UHFFFAOYSA-N 8-(4-piperazin-1-ylbutyl)-8-azaspiro[4.5]decane-7,9-dione Chemical compound C1C(=O)N(CCCCN2CCNCC2)C(=O)CC21CCCC2 ZOVNKFCHBFUAIS-UHFFFAOYSA-N 0.000 claims description 2
- 230000002152 alkylating effect Effects 0.000 claims description 2
- 125000001246 bromo group Chemical group Br* 0.000 claims description 2
- 239000012442 inert solvent Substances 0.000 claims description 2
- 229910052740 iodine Inorganic materials 0.000 claims description 2
- 239000011630 iodine Chemical group 0.000 claims description 2
- 230000002285 radioactive effect Effects 0.000 abstract description 4
- 125000000246 pyrimidin-2-yl group Chemical group [H]C1=NC(*)=NC([H])=C1[H] 0.000 abstract description 3
- UNCQVRBWJWWJBF-AKZCFXPHSA-N 2-chloropyrimidine Chemical compound ClC1=[15N]C=CC=[15N]1 UNCQVRBWJWWJBF-AKZCFXPHSA-N 0.000 abstract description 2
- 230000029936 alkylation Effects 0.000 abstract description 2
- 238000005804 alkylation reaction Methods 0.000 abstract description 2
- UNCQVRBWJWWJBF-DOMIDYPGSA-N 2-chloro(214C)pyrimidine Chemical compound Cl[14C]1=NC=CC=N1 UNCQVRBWJWWJBF-DOMIDYPGSA-N 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 16
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 12
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 description 10
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 9
- 239000000203 mixture Substances 0.000 description 7
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- SPEUIVXLLWOEMJ-UHFFFAOYSA-N 1,1-dimethoxyethane Chemical compound COC(C)OC SPEUIVXLLWOEMJ-UHFFFAOYSA-N 0.000 description 4
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 4
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- WTVNFKVGGUWHQC-UHFFFAOYSA-N decane-2,4-dione Chemical compound CCCCCCC(=O)CC(C)=O WTVNFKVGGUWHQC-UHFFFAOYSA-N 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- QCQCHGYLTSGIGX-GHXANHINSA-N 4-[[(3ar,5ar,5br,7ar,9s,11ar,11br,13as)-5a,5b,8,8,11a-pentamethyl-3a-[(5-methylpyridine-3-carbonyl)amino]-2-oxo-1-propan-2-yl-4,5,6,7,7a,9,10,11,11b,12,13,13a-dodecahydro-3h-cyclopenta[a]chrysen-9-yl]oxy]-2,2-dimethyl-4-oxobutanoic acid Chemical compound N([C@@]12CC[C@@]3(C)[C@]4(C)CC[C@H]5C(C)(C)[C@@H](OC(=O)CC(C)(C)C(O)=O)CC[C@]5(C)[C@H]4CC[C@@H]3C1=C(C(C2)=O)C(C)C)C(=O)C1=CN=CC(C)=C1 QCQCHGYLTSGIGX-GHXANHINSA-N 0.000 description 3
- -1 alkali metal salt Chemical class 0.000 description 3
- 239000012458 free base Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- VTGOHKSTWXHQJK-UHFFFAOYSA-N pyrimidin-2-ol Chemical compound OC1=NC=CC=N1 VTGOHKSTWXHQJK-UHFFFAOYSA-N 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- WSMYVTOQOOLQHP-UHFFFAOYSA-N Malondialdehyde Chemical compound O=CCC=O WSMYVTOQOOLQHP-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-NJFSPNSNSA-N UREA C 14 Chemical compound N[14C](N)=O XSQUKJJJFZCRTK-NJFSPNSNSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229950000184 urea c 14 Drugs 0.000 description 2
- CZPWVGJYEJSRLH-DOMIDYPGSA-N (214C)pyrimidine Chemical compound C1=CN=[14CH]N=C1 CZPWVGJYEJSRLH-DOMIDYPGSA-N 0.000 description 1
- KVJHGPAAOUGYJX-UHFFFAOYSA-N 1,1,3,3-tetraethoxypropane Chemical compound CCOC(OCC)CC(OCC)OCC KVJHGPAAOUGYJX-UHFFFAOYSA-N 0.000 description 1
- XHTYQFMRBQUCPX-UHFFFAOYSA-N 1,1,3,3-tetramethoxypropane Chemical compound COC(OC)CC(OC)OC XHTYQFMRBQUCPX-UHFFFAOYSA-N 0.000 description 1
- ULTHEAFYOOPTTB-UHFFFAOYSA-N 1,4-dibromobutane Chemical compound BrCCCCBr ULTHEAFYOOPTTB-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- IAJINJSFYTZPEJ-IGQLHDOCSA-N Cl.OC1=[15N]C=CC=[15N]1 Chemical compound Cl.OC1=[15N]C=CC=[15N]1 IAJINJSFYTZPEJ-IGQLHDOCSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241001390651 Micropus Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 239000002249 anxiolytic agent Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- YRTHJMQKDCXPAY-UHFFFAOYSA-N azaspirodecanedione Chemical compound C1C(=O)NC(=O)CC11CCCC1 YRTHJMQKDCXPAY-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- XSQUKJJJFZCRTK-SUEIGJEOSA-N bis(azanyl)methanone Chemical compound [15NH2]C([15NH2])=O XSQUKJJJFZCRTK-SUEIGJEOSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 description 1
- 239000007810 chemical reaction solvent Substances 0.000 description 1
- 239000002026 chloroform extract Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 238000004809 thin layer chromatography Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D221/00—Heterocyclic compounds containing six-membered rings having one nitrogen atom as the only ring hetero atom, not provided for by groups C07D211/00 - C07D219/00
- C07D221/02—Heterocyclic compounds containing six-membered rings having one nitrogen atom as the only ring hetero atom, not provided for by groups C07D211/00 - C07D219/00 condensed with carbocyclic rings or ring systems
- C07D221/20—Spiro-condensed ring systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/30—Halogen atoms or nitro radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/32—One oxygen, sulfur or nitrogen atom
- C07D239/34—One oxygen atom
- C07D239/36—One oxygen atom as doubly bound oxygen atom or as unsubstituted hydroxy radical
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21521480A | 1980-12-11 | 1980-12-11 | |
| US215,214 | 1980-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1172255A true CA1172255A (fr) | 1984-08-07 |
Family
ID=22802113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000386889A Expired CA1172255A (fr) | 1980-12-11 | 1981-09-29 | Methode de preparation de buspirone |
Country Status (18)
| Country | Link |
|---|---|
| JP (1) | JPS57122082A (fr) |
| AT (1) | AT380686B (fr) |
| AU (1) | AU528067B2 (fr) |
| BE (1) | BE891446A (fr) |
| CA (1) | CA1172255A (fr) |
| CH (1) | CH647518A5 (fr) |
| DE (1) | DE3149011A1 (fr) |
| DK (1) | DK154560C (fr) |
| FI (1) | FI73993C (fr) |
| FR (1) | FR2496105B1 (fr) |
| GB (1) | GB2089341B (fr) |
| GR (1) | GR76331B (fr) |
| IE (1) | IE51948B1 (fr) |
| IT (1) | IT1172073B (fr) |
| LU (1) | LU83833A1 (fr) |
| NL (1) | NL8105529A (fr) |
| SE (1) | SE444438B (fr) |
| YU (1) | YU42432B (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU212301B (en) * | 1989-04-28 | 1996-05-28 | Alkaloida Vegyeszeti Gyar | Process for producing buspirone |
| US5631017A (en) * | 1993-03-26 | 1997-05-20 | Beth Israel Deaconess Medical Center, Inc. | Topical application of buspirone for treatment of pathological conditions associated with immune responses |
| US5484788A (en) * | 1993-03-26 | 1996-01-16 | Beth Israel Hospital Association | Buspirone as a systemic immunosuppressant |
| KR950014099A (ko) * | 1993-11-10 | 1995-06-15 | 장기하 | N-(2-피리미딜)피페라지닐 부틸아미드의 제조방법 |
| US5637314A (en) * | 1995-06-07 | 1997-06-10 | Beth Israel Deaconess Medical Center, Inc. | Topical and systemic application of buspirone or derivatives thereof for treating atopic dermatitis |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE759371A (fr) * | 1969-11-24 | 1971-05-24 | Bristol Myers Co | Azaspirodecanediones heterocycliques et procedes pour leur preparation |
| DE2341925A1 (de) * | 1973-08-20 | 1975-03-06 | Thomae Gmbh Dr K | Neue pyrimidinderivate und verfahren zu ihrer herstellung |
-
1981
- 1981-09-29 CA CA000386889A patent/CA1172255A/fr not_active Expired
- 1981-10-05 AU AU76041/81A patent/AU528067B2/en not_active Expired
- 1981-10-09 YU YU2436/81A patent/YU42432B/xx unknown
- 1981-10-27 GB GB8132370A patent/GB2089341B/en not_active Expired
- 1981-11-16 IT IT49718/81A patent/IT1172073B/it active
- 1981-11-27 GR GR66636A patent/GR76331B/el unknown
- 1981-12-08 CH CH7842/81A patent/CH647518A5/de not_active IP Right Cessation
- 1981-12-08 NL NL8105529A patent/NL8105529A/nl active Search and Examination
- 1981-12-08 FR FR8122916A patent/FR2496105B1/fr not_active Expired
- 1981-12-08 FI FI813937A patent/FI73993C/fi not_active IP Right Cessation
- 1981-12-09 JP JP56197037A patent/JPS57122082A/ja active Granted
- 1981-12-10 IE IE2897/81A patent/IE51948B1/en not_active IP Right Cessation
- 1981-12-10 AT AT0529581A patent/AT380686B/de not_active IP Right Cessation
- 1981-12-10 DE DE19813149011 patent/DE3149011A1/de active Granted
- 1981-12-10 DK DK548081A patent/DK154560C/da not_active IP Right Cessation
- 1981-12-11 SE SE8107446A patent/SE444438B/sv not_active IP Right Cessation
- 1981-12-11 BE BE0/206810A patent/BE891446A/fr not_active IP Right Cessation
- 1981-12-11 LU LU83833A patent/LU83833A1/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT8149718A0 (it) | 1981-11-16 |
| FR2496105B1 (fr) | 1985-12-13 |
| SE8107446L (sv) | 1982-06-12 |
| FI73993C (fi) | 1987-12-10 |
| DK548081A (da) | 1982-06-12 |
| AU528067B2 (en) | 1983-04-14 |
| GB2089341A (en) | 1982-06-23 |
| IE812897L (en) | 1982-06-11 |
| FR2496105A1 (fr) | 1982-06-18 |
| ATA529581A (de) | 1985-11-15 |
| JPH0113476B2 (fr) | 1989-03-06 |
| DE3149011C2 (fr) | 1988-08-25 |
| AT380686B (de) | 1986-06-25 |
| BE891446A (fr) | 1982-06-11 |
| GR76331B (fr) | 1984-08-04 |
| FI813937L (fi) | 1982-06-12 |
| IE51948B1 (en) | 1987-04-29 |
| JPS57122082A (en) | 1982-07-29 |
| IT1172073B (it) | 1987-06-18 |
| YU42432B (en) | 1988-08-31 |
| DK154560C (da) | 1989-04-17 |
| DE3149011A1 (de) | 1982-07-15 |
| DK154560B (da) | 1988-11-28 |
| FI73993B (fi) | 1987-08-31 |
| SE444438B (sv) | 1986-04-14 |
| NL8105529A (nl) | 1982-07-01 |
| YU243681A (en) | 1984-02-29 |
| GB2089341B (en) | 1984-09-19 |
| LU83833A1 (fr) | 1982-07-07 |
| CH647518A5 (de) | 1985-01-31 |
| AU7604181A (en) | 1982-07-15 |
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