CS223993B2 - Method of making the ergot-alcaloid - Google Patents
Method of making the ergot-alcaloid Download PDFInfo
- Publication number
- CS223993B2 CS223993B2 CS811168A CS116881A CS223993B2 CS 223993 B2 CS223993 B2 CS 223993B2 CS 811168 A CS811168 A CS 811168A CS 116881 A CS116881 A CS 116881A CS 223993 B2 CS223993 B2 CS 223993B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- alkaloids
- formula
- salts
- mixture
- ergotamine
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title description 2
- 229930013930 alkaloid Natural products 0.000 claims abstract description 65
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 39
- 150000003839 salts Chemical class 0.000 claims abstract description 36
- OFKDAAIKGIBASY-VFGNJEKYSA-N ergotamine Chemical compound C([C@H]1C(=O)N2CCC[C@H]2[C@]2(O)O[C@@](C(N21)=O)(C)NC(=O)[C@H]1CN([C@H]2C(C3=CC=CC4=NC=C([C]34)C2)=C1)C)C1=CC=CC=C1 OFKDAAIKGIBASY-VFGNJEKYSA-N 0.000 claims abstract description 27
- 229960004943 ergotamine Drugs 0.000 claims abstract description 22
- XCGSFFUVFURLIX-UHFFFAOYSA-N ergotaminine Natural products C1=C(C=2C=CC=C3NC=C(C=23)C2)C2N(C)CC1C(=O)NC(C(N12)=O)(C)OC1(O)C1CCCN1C(=O)C2CC1=CC=CC=C1 XCGSFFUVFURLIX-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 22
- 239000002585 base Substances 0.000 claims abstract description 20
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 19
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims abstract description 18
- 239000012452 mother liquor Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011975 tartaric acid Substances 0.000 claims abstract description 17
- 235000002906 tartaric acid Nutrition 0.000 claims abstract description 17
- 239000002253 acid Substances 0.000 claims abstract description 16
- 239000003960 organic solvent Substances 0.000 claims abstract description 16
- 239000002904 solvent Substances 0.000 claims abstract description 8
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 claims abstract description 4
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 76
- 150000001875 compounds Chemical class 0.000 claims description 42
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 23
- 239000011541 reaction mixture Substances 0.000 claims description 17
- 238000006345 epimerization reaction Methods 0.000 claims description 10
- 150000007513 acids Chemical class 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 4
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 2
- 239000003513 alkali Chemical class 0.000 claims 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical class [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims 1
- 229910000397 disodium phosphate Inorganic materials 0.000 claims 1
- 235000019800 disodium phosphate Nutrition 0.000 claims 1
- 239000001488 sodium phosphate Substances 0.000 claims 1
- 229960003133 ergot alkaloid Drugs 0.000 abstract description 21
- 229910019142 PO4 Inorganic materials 0.000 abstract description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract description 6
- 239000010452 phosphate Substances 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 229940095064 tartrate Drugs 0.000 abstract description 2
- 239000012458 free base Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 19
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 11
- 235000021317 phosphate Nutrition 0.000 description 11
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 10
- 150000003797 alkaloid derivatives Chemical class 0.000 description 10
- 235000019441 ethanol Nutrition 0.000 description 8
- 229960000583 acetic acid Drugs 0.000 description 7
- -1 alkaloid tartrates Chemical class 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- NESVMZOPWPCFAU-ZPRCMDFASA-N ergosine Chemical compound C1=CC(C=2[C@H](N(C)C[C@@H](C=2)C(=O)N[C@]2(C(=O)N3[C@H](C(N4CCC[C@H]4[C@]3(O)O2)=O)CC(C)C)C)C2)=C3C2=CNC3=C1 NESVMZOPWPCFAU-ZPRCMDFASA-N 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 5
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 5
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 4
- 229910052740 iodine Inorganic materials 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000012429 reaction media Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 3
- XWTYUTWHTOOWSS-UHFFFAOYSA-N Ergonin Natural products O1C2(O)C3CCCN3C(=O)C(C(C)C)N2C(=O)C1(CC)NC(=O)C(CN(C)C1C2)C=C1C1=C3C2=CNC3=CC=C1 XWTYUTWHTOOWSS-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 150000001408 amides Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- XLMJRFCCCWFQRE-SJRQCXNHSA-N ecboline Chemical compound C([C@H]1[C@]2(O)O3)CCN1C(=O)CN2C(=O)[C@]3(C(C)C)NC(=O)[C@@H](CN(C)[C@@H]1C2)C=C1C1=C3C2=CNC3=CC=C1 XLMJRFCCCWFQRE-SJRQCXNHSA-N 0.000 description 3
- 239000002609 medium Substances 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 150000003462 sulfoxides Chemical class 0.000 description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- YDOTUXAWKBPQJW-UHFFFAOYSA-N alpha-Ergocryptinine Natural products C1=CC(C=2C(N(C)CC(C=2)C(=O)NC2(C(=O)N3C(C(N4CCCC4C3(O)O2)=O)CC(C)C)C(C)C)C2)=C3C2=CNC3=C1 YDOTUXAWKBPQJW-UHFFFAOYSA-N 0.000 description 2
- YDOTUXAWKBPQJW-NSLWYYNWSA-N alpha-ergocryptine Chemical compound C1=CC(C=2[C@H](N(C)C[C@@H](C=2)C(=O)N[C@]2(C(=O)N3[C@H](C(N4CCC[C@H]4[C@]3(O)O2)=O)CC(C)C)C(C)C)C2)=C3C2=CNC3=C1 YDOTUXAWKBPQJW-NSLWYYNWSA-N 0.000 description 2
- 229950001817 alpha-ergocryptine Drugs 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- UJYGDMFEEDNVBF-UHFFFAOYSA-N ergocornin Chemical compound C1=CC(C=2C(N(C)CC(C=2)C(=O)NC2(C(=O)N3C(C(N4CCCC4C3(O)O2)=O)C(C)C)C(C)C)C2)=C3C2=CNC3=C1 UJYGDMFEEDNVBF-UHFFFAOYSA-N 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 229940088597 hormone Drugs 0.000 description 2
- 239000005556 hormone Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- LQIAZOCLNBBZQK-UHFFFAOYSA-N 1-(1,2-Diphosphanylethyl)pyrrolidin-2-one Chemical compound PCC(P)N1CCCC1=O LQIAZOCLNBBZQK-UHFFFAOYSA-N 0.000 description 1
- NSFIAKFOCAEBER-UHFFFAOYSA-N 2,3-dihydroxy-2,3-bis(4-methylphenyl)butanedioic acid Chemical class C1=CC(C)=CC=C1C(O)(C(O)=O)C(O)(C(O)=O)C1=CC=C(C)C=C1 NSFIAKFOCAEBER-UHFFFAOYSA-N 0.000 description 1
- XWTYUTWHTOOWSS-FPNLSDLLSA-N 34896-18-9 Chemical compound C([C@H]1[C@]2(O)O3)CCN1C(=O)[C@@H](C(C)C)N2C(=O)[C@]3(CC)NC(=O)[C@@H](CN(C)[C@H]1C2)C=C1C1=C3C2=CNC3=CC=C1 XWTYUTWHTOOWSS-FPNLSDLLSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- 241000282994 Cervidae Species 0.000 description 1
- NESVMZOPWPCFAU-UHFFFAOYSA-N Ergoclavinine Natural products C1=CC(C=2C(N(C)CC(C=2)C(=O)NC2(C(=O)N3C(C(N4CCCC4C3(O)O2)=O)CC(C)C)C)C2)=C3C2=CNC3=C1 NESVMZOPWPCFAU-UHFFFAOYSA-N 0.000 description 1
- JFRCRHHCXKEHBW-UHFFFAOYSA-N Ergoptin Natural products O1C2(O)C3CCCN3C(=O)C(CC(C)C)N2C(=O)C1(CC)NC(=O)C(CN(C)C1C2)C=C1C1=C3C2=CNC3=CC=C1 JFRCRHHCXKEHBW-UHFFFAOYSA-N 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 240000007049 Juglans regia Species 0.000 description 1
- 235000009496 Juglans regia Nutrition 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical class [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 1
- 229940125684 antimigraine agent Drugs 0.000 description 1
- 239000002282 antimigraine agent Substances 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 229950010031 beta-ergocryptine Drugs 0.000 description 1
- YYWXOXLDOMRDHW-UHFFFAOYSA-N beta-ergocryptine Natural products C1=CC(C=2C(N(C)CC(C=2)C(=O)NC2(C(=O)N3C(C(N4CCCC4C3(O)O2)=O)C(C)CC)C(C)C)C2)=C3C2=CNC3=C1 YYWXOXLDOMRDHW-UHFFFAOYSA-N 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-M dihydrogenphosphate Chemical compound OP(O)([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-M 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- JFRCRHHCXKEHBW-YKAZNSBZSA-N ergoptin Chemical compound C([C@H]1[C@]2(O)O3)CCN1C(=O)[C@@H](CC(C)C)N2C(=O)[C@]3(CC)NC(=O)[C@@H](CN(C)[C@@H]1C2)C=C1C1=C3C2=CNC3=CC=C1 JFRCRHHCXKEHBW-YKAZNSBZSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- PUSKHXMZPOMNTQ-UHFFFAOYSA-N ethyl 2,1,3-benzoselenadiazole-5-carboxylate Chemical compound CCOC(=O)C1=CC=C2N=[Se]=NC2=C1 PUSKHXMZPOMNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 238000001640 fractional crystallisation Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 235000019837 monoammonium phosphate Nutrition 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 150000004880 oxines Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012018 process simulation test Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- HHVIBTZHLRERCL-UHFFFAOYSA-N sulfonyldimethane Chemical group CS(C)(=O)=O HHVIBTZHLRERCL-UHFFFAOYSA-N 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 235000020234 walnut Nutrition 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- YYWXOXLDOMRDHW-SGVWFJRMSA-N β-ergocryptine Chemical compound C1=CC(C=2[C@H](N(C)C[C@@H](C=2)C(=O)N[C@]2(C(=O)N3[C@@H](C(N4CCC[C@H]4[C@]3(O)O2)=O)[C@@H](C)CC)C(C)C)C2)=C3C2=CNC3=C1 YYWXOXLDOMRDHW-SGVWFJRMSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D519/00—Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00
- C07D519/02—Ergot alkaloids of the cyclic peptide type
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicines Containing Plant Substances (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS82247A CS223994B2 (cs) | 1980-03-03 | 1982-01-12 | Způsob čištění ergot-alkaloidů |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU80697A HU191022B (en) | 1979-03-26 | 1980-03-03 | Composite tablet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS223993B2 true CS223993B2 (en) | 1983-11-25 |
Family
ID=10950898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS811168A CS223993B2 (en) | 1980-03-03 | 1981-02-18 | Method of making the ergot-alcaloid |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE887712A (ref) |
| CH (1) | CH646707A5 (ref) |
| CS (1) | CS223993B2 (ref) |
| FR (1) | FR2477155A1 (ref) |
| IT (1) | IT1193584B (ref) |
| SU (1) | SU1222198A3 (ref) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB445325A (en) * | 1935-07-29 | 1936-04-07 | Wellcome Found | The manufacture of ergometrine |
| DE861562C (de) * | 1942-09-16 | 1953-01-05 | Sandoz Ag | Verfahren zur Trennung und Reindarstellung von Lysergsaeure- und Isolysergsaeure-Derivaten |
| CH626373A5 (ref) * | 1977-02-22 | 1981-11-13 | Sandoz Ag | |
| YU41110B (en) * | 1978-07-19 | 1986-12-31 | Lek Tovarna Farmacevtskih | Process for preparing dextrorotatory ergot alcaloids acid addition salts |
| BE880600A (fr) * | 1979-12-13 | 1980-04-01 | Richter Gedeon Vegyeszet | Procede d'obtention d'alcaloides peptidiques du type ergol |
-
1981
- 1981-02-11 CH CH89581A patent/CH646707A5/de not_active IP Right Cessation
- 1981-02-18 CS CS811168A patent/CS223993B2/cs unknown
- 1981-02-27 BE BE1/10152A patent/BE887712A/fr not_active IP Right Cessation
- 1981-02-27 FR FR8103916A patent/FR2477155A1/fr active Granted
- 1981-03-02 IT IT20088/81A patent/IT1193584B/it active
- 1981-03-02 SU SU813252498A patent/SU1222198A3/ru active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2477155A1 (en) | 1981-09-04 |
| SU1222198A3 (ru) | 1986-03-30 |
| FR2477155B1 (ref) | 1985-05-17 |
| IT1193584B (it) | 1988-07-08 |
| IT8120088A0 (it) | 1981-03-02 |
| CH646707A5 (en) | 1984-12-14 |
| BE887712A (fr) | 1981-08-27 |
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