KR100269758B1 - 신규한 시클릭 아미노산 및 그의 유도체 - Google Patents
신규한 시클릭 아미노산 및 그의 유도체 Download PDFInfo
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- KR100269758B1 KR100269758B1 KR1019940703746A KR19940703746A KR100269758B1 KR 100269758 B1 KR100269758 B1 KR 100269758B1 KR 1019940703746 A KR1019940703746 A KR 1019940703746A KR 19940703746 A KR19940703746 A KR 19940703746A KR 100269758 B1 KR100269758 B1 KR 100269758B1
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- 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
- C07D311/78—Ring systems having three or more relevant rings
- C07D311/80—Dibenzopyrans; Hydrogenated dibenzopyrans
- C07D311/82—Xanthenes
- C07D311/90—Xanthenes with hydrocarbon radicals, substituted by amino radicals, directly attached in position 9
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
- C07C271/06—Esters of carbamic acids
- C07C271/08—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms
- C07C271/10—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms
- C07C271/22—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms to carbon atoms of hydrocarbon radicals substituted by carboxyl groups
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C229/00—Compounds containing amino and carboxyl groups bound to the same carbon skeleton
- C07C229/02—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton
- C07C229/34—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton containing six-membered aromatic rings
- C07C229/36—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton containing six-membered aromatic rings with at least one amino group and one carboxyl group bound to the same carbon atom of the carbon skeleton
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C233/00—Carboxylic acid amides
- C07C233/01—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
- C07C233/45—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by carboxyl groups
- C07C233/46—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by carboxyl groups with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom
- C07C233/51—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by carboxyl groups with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom having the carbon atom of the carboxamide group bound to an acyclic carbon atom of a carbon skeleton containing six-membered aromatic rings
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D335/00—Heterocyclic compounds containing six-membered rings having one sulfur atom as the only ring hetero atom
- C07D335/04—Heterocyclic compounds containing six-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
- C07D335/10—Dibenzothiopyrans; Hydrogenated dibenzothiopyrans
- C07D335/12—Thioxanthenes
- C07D335/20—Thioxanthenes with hydrocarbon radicals, substituted by amino radicals, directly attached in position 9
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/02—Ortho- or ortho- and peri-condensed systems
- C07C2603/04—Ortho- or ortho- and peri-condensed systems containing three rings
- C07C2603/30—Ortho- or ortho- and peri-condensed systems containing three rings containing seven-membered rings
- C07C2603/32—Dibenzocycloheptenes; Hydrogenated dibenzocycloheptenes
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Peptides Or Proteins (AREA)
- Pyrane Compounds (AREA)
- Other In-Based Heterocyclic Compounds (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Abstract
Description
Claims (12)
- 하기 일반식 (I)의 화합물 또는 그의 제약학상 허용되는 염.(I)상기 식 중, Z는 -O-, -S(O)n- (여기서, n은 0 내지 2의 정수임), -(CH2)m- (여기서, m은 1 내지 4의 정수임), -(CH2)n-CH=CH-(CH2)n-, -(CH2)n-CH≡C-(CH2)n- (여기서, n은 상기 정의한 바와 같음)이고; R은 수소, 메틸, 트리플루오로메틸, 메톡시, 히드록시, 클로로, 브로모, 플루오로, 요오도, 2,4-디브로모, 2,4-디클로로 및 2,4-디플루오로이고; R1은 수소, 알킬, 알케닐, 알키닐, 시클로알킬, 시클로알킬알킬, 아릴, 아릴알킬, 헤테로아릴 및 플루오레닐메틸이고; R2는 수소, 벤질옥시카르보닐, tert-부틸옥시카르보닐, 플루오레닐옥시카르보닐, 1-아다만틸옥시카르보닐, 2-아다만틸옥시카르보닐, 및〔여기서, R3은 수소, 알킬, 알케닐, 알키닐, 시클로알킬, 시클로알킬알킬, 아릴, 헤테로아릴, 플루오레닐메틸, CX3(여기서, X는 할로겐 또는 아릴임)임〕이고; C*에서의 입체화학은 D, L 또는 DL이되, 단, 여기서 Z가 -O-이고, R. R1및 R2가 수소이고, C*에서의 입체화학이 D, L 또는 DL인 일반식 (I)의 화합물은 제외한다.
- 제1항에 있어서, Z가 -O-, -S-, -(CH2)n- (여기서, m은 1 내지 4의 정수임) 및 -(CH2)n-CH=CH-(CH2)n- (여기서, n은 0 또는 1의 정수임)이고; R이 수소이고; R1이 수소이고; R2가 수소, 벤질옥시카르보닐, tert-부틸옥시카르보닐, 플루오레닐옥시카르보닐, 1-아다만틸옥시카르보닐 및 2-아다만틸옥시카르보닐인 화합물.
- 제2항에 있어서, Z가 -O-, -S-, -CH2-CH2및 -CH=CH-인 화합물.
- 제3항에 있어서, D-α-아미노-9H-크산텐-9-아세트산; L-α-아미노-9H-크산텐-9-아세트산; D-α-아미노-9H-티오크산텐-9-아세트산; L-α-아미노-9H-티오크산텐-9-아세트산; DL-α-아미노-9H-티오크산텐-9-아세트산; D-α-아미노-10,11-디히드로-5H-디벤조〔a,d〕시클로헵텐-5-아세트산; L-α-아미노-10,11-디히드로-5H-디벤조〔a,d〕시클로헵텐-5-아세트산; DL-α-아미노-10,11-디히드로-5H-디벤조〔a,d〕시클로헵텐-5-아세트산; D-α-아미노-5H-디벤조〔a,d〕시클로헵텐-5-아세트산; D-α-아미노-5H-디벤조〔a,d〕시클로헵텐-5-아세트산; DL-α-아미노-5H-디벤조〔a,d〕시클로헵텐-5-아세트산으로 이루어진 군에서 선택된 화합물.
- (a) 하기 일반식 (Ⅱ)의 라세미 화합물을 용매 중에서 (-)신코니딘으로 처리하여 하기 일반식 (Ⅲ)의 라세미 화합물을 얻는 단계; (b) 하기 일반식 (Ⅲ)의 화합물을 분별 결정화에 의해 D 및 L 에난티오머로 분리하는 단계; (c) 하기 일반식 (D-Ⅲa) 또는 (L-Ⅲb)의 화합물을 용매 중에서 산으로 처리하여 하기 일반식 (D-Ⅱa) 또는 (L-Ⅱb)의 화합물을 얻는 단계; (d) 일반식 (D-Ⅱa) 또는 (K-Ⅱb)의 화합물을 산과 함께 가열하여 일반식 (I)의 (D-Ia) 또는 (L-Ib) 에난티오머를 얻는 단계; 및 (e) 필요시에, 일반식 (D-Ia) 또는 (L-Ib)의 화합물을 통상의 방법으로 대응하는 제약학상 허용되는 염으로 전환시키고, 또한 필요시에 대응하는 제약학상 허용되는 염을 통상의 방법으로 일반식 (D-Ia) 또는 (L-Ib)의 화합물로 전환시키는 단계로 이루어지는 하기 일반식 (I)의 화합물 또는 그의 제약학상 허용되는 염의 D 및 L 에난티오머의 제조 방법.상기 식중, Z는 -O-, -S(O)n-, (여기서, n은 0 내지 2의 정수임), -(CH2)m- (여기서, m은 1 내지 4의 정수임), -(CH2)n-CH=CH-(CH2)n-, -(CH2)n-CH≡C-(CH2)n- (여기서, n은 상기 정의한 바와 같음)이고; R은 수소, 메틸, 트리플루오로메틸, 메톡시, 히드록시, 클로로. 브로모, 플루오로, 요오드, 2,4-디브로모, 2,4-디클로로 및 2,4-디플루오로이고; R1은 수소, 알킬, 알케닐, 알키닐, 시클로알킬, 시클로알킬알킬, 아릴, 아릴알킬, 헤테로아릴 및 플루오레닐메틸이고; R4는 저급 알킬 및 CX3(여기서 X는 수소, 할로겐 또는 아릴임)이다.
- 제5항에 있어서, 단계 (a)에 사용된 용매가 메탄올인 방법.
- 제5항에 있어서, 단계 (b)에 사용된 용매가 에틸 아세테이트인 방법.
- 제5항에 있어서, 단계 (c)에 사용된 산이 염산인 방법.
- 제5항에 있어서, 단계 (d)에 사용된 산이 염산인 방법.
- 제5항에 있어서, 일반식 (D-Ⅱa) 또는 (L-Ⅱb)의 화합물을 6N 염산 용액에서 환류시키는 방법.
- 제5항에 있어서, D-α-아미노-9H-크산텐-9-아세트산; L-α-아미노-9H-크산텐-9-아세트산; D-α-아미노-9H-티오크산텐-9-아세트산; L-α-아미노-9H-티오크산텐-9-아세트산; D-α-아미노-10,11-디히드로-5H-디벤조〔a,d〕시클로헵텐-5-아세트산; L-α-아미노-10,11-디히드로-5H-디벤조〔a,d〕시클로헵텐-5-아세트산; D-α-아미노-5H-디벤조〔a,d〕시클로헵텐-5-아세트산; 및 L-α-아미노-5H-디벤조〔a,d〕시클로헵텐-5-아세트산으로 이루어진 군에서 선택된 화합물의 제조를 위한 방법.
- 하기 일반식 (I-Ⅲa) 및 (L-Ⅲb)로 이루어진 군에서 선택된 화합물.상기 식 중, Z가 -O-, -S(O)n- (여기서, n은 0 내지 2의 정수임), -(CH2)m- (여기서, m은 1 내지 4의 정수임), -(CH2)n-CH=CH-(CH2)n-, -(CH2)n-C≡C-(CH2)n- (여기서, n은 상기 정의한 바와 같음)이고; R은 수소, 메틸, 트리플루오로메틸, 메톡시, 히드록시, 클로로. 브로모, 플루오로, 요오드, 2,4-디플루오로이고; R1은 수소, 알킬, 알케닐, 알키닐, 시클로알킬, 시클로알킬알킬, 아릴, 아릴알킬, 헤테로아릴 및 플루오레닐메틸이고; R4는 저급 알킬 및 CX3(여기서 X는 수소, 할로겐 또는 아릴임)이다.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020007001540A KR100270305B1 (ko) | 1992-04-22 | 1993-04-16 | 신규한 시클릭 아미노산 및 그의 유도체 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US872,742 | 1992-04-22 | ||
US872742 | 1992-04-22 | ||
US07/872,742 US5264577A (en) | 1992-04-22 | 1992-04-22 | Cyclic amino acids and derivatives thereof |
PCT/US1993/003657 WO1993021176A1 (en) | 1992-04-22 | 1993-04-16 | Novel cyclic amino acids and derivatives thereof |
Related Child Applications (2)
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KR1020007001541A Division KR100270306B1 (ko) | 1992-04-22 | 1993-04-16 | 신규한 시클릭 아미노산 및 그의 유도체 |
KR1020007001540A Division KR100270305B1 (ko) | 1992-04-22 | 1993-04-16 | 신규한 시클릭 아미노산 및 그의 유도체 |
Publications (2)
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KR950701331A KR950701331A (ko) | 1995-03-23 |
KR100269758B1 true KR100269758B1 (ko) | 2000-11-01 |
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KR1019940703746A Expired - Fee Related KR100269758B1 (ko) | 1992-04-22 | 1993-04-16 | 신규한 시클릭 아미노산 및 그의 유도체 |
KR1020007001540A Expired - Fee Related KR100270305B1 (ko) | 1992-04-22 | 1993-04-16 | 신규한 시클릭 아미노산 및 그의 유도체 |
KR1020007001541A Expired - Fee Related KR100270306B1 (ko) | 1992-04-22 | 1993-04-16 | 신규한 시클릭 아미노산 및 그의 유도체 |
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KR1020007001540A Expired - Fee Related KR100270305B1 (ko) | 1992-04-22 | 1993-04-16 | 신규한 시클릭 아미노산 및 그의 유도체 |
KR1020007001541A Expired - Fee Related KR100270306B1 (ko) | 1992-04-22 | 1993-04-16 | 신규한 시클릭 아미노산 및 그의 유도체 |
Country Status (14)
Country | Link |
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US (3) | US5264577A (ko) |
EP (1) | EP0637305A1 (ko) |
JP (1) | JP3276960B2 (ko) |
KR (3) | KR100269758B1 (ko) |
AU (1) | AU672209B2 (ko) |
CA (1) | CA2133089C (ko) |
CZ (1) | CZ288529B6 (ko) |
FI (1) | FI944906A7 (ko) |
MX (1) | MX9302327A (ko) |
NO (1) | NO304828B1 (ko) |
NZ (1) | NZ252854A (ko) |
RU (1) | RU2111206C1 (ko) |
SK (1) | SK282479B6 (ko) |
WO (1) | WO1993021176A1 (ko) |
Families Citing this family (14)
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US5264577A (en) * | 1992-04-22 | 1993-11-23 | Warner-Lambert Company | Cyclic amino acids and derivatives thereof |
US5550110A (en) * | 1992-04-22 | 1996-08-27 | Warner-Lambert Company | Endothelin Antagonists II |
US5663368A (en) * | 1993-07-14 | 1997-09-02 | Smithkline Beecham Corporation | Synthesis of acid addition salts of hydroxylamines |
US5498719A (en) * | 1994-01-31 | 1996-03-12 | The United States Of America As Represented By The Secretary Of The Department Of Health & Human Services | Diastereoselective process leading to a key intermediate for the preparation of fluorinated reverse transcriptase inhibitors |
US5623087A (en) * | 1995-03-10 | 1997-04-22 | Ndsu-Research Foundation | Method for preparation of optically active diarylalanines |
GB9621789D0 (en) * | 1996-10-18 | 1996-12-11 | Lilly Industries Ltd | Pharmaceutical compounds |
GB9626151D0 (en) * | 1996-12-17 | 1997-02-05 | Lilly Industries Ltd | Pharmaceutical compounds |
US6307048B1 (en) | 1998-11-20 | 2001-10-23 | Schering Corporation | Enantioselective alkylation of tricyclic compounds |
AU1606500A (en) * | 1998-11-20 | 2000-06-13 | Schering Corporation | Enantioselective alkylation of tricyclic compounds |
AU2002351170B8 (en) * | 2001-12-11 | 2009-10-08 | Wyeth | Production of chirally pure alpha-amino acids and N-sulfonyl alpha-amino acids |
RU2332397C2 (ru) * | 2001-12-11 | 2008-08-27 | Уайт | Способ синтеза хирально чистых бета-аминоспиртов |
JP4679150B2 (ja) | 2002-10-03 | 2011-04-27 | シェーリング コーポレイション | 三環系化合物のエナンチオ選択的アルキル化 |
CN101633625B (zh) * | 2008-07-23 | 2013-02-13 | 江苏恒瑞医药股份有限公司 | R-β-氨基苯丁酸衍生物的制备方法 |
CN115073314A (zh) * | 2022-07-11 | 2022-09-20 | 吉尔多肽生物制药(大连市)有限公司 | 一种仲碳类甘氨酸的合成方法 |
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US3888900A (en) * | 1971-08-17 | 1975-06-10 | Sandoz Ag | 7-cyano-hexahydro pleiadenes |
NL7306069A (ko) * | 1973-05-02 | 1974-11-05 | ||
FI57743C (fi) * | 1979-03-29 | 1980-10-10 | Orion Yhtymae Oy | Foerfarande foer framstaellning av nya 1,8-dihydroxi-10-acyl-9-antroner mot psoriasis |
JPS5810525A (ja) * | 1981-06-15 | 1983-01-21 | Sagami Chem Res Center | 光学活性な1−芳香族基置換−1−アルカノン類の製造方法 |
DE19575006I2 (de) * | 1981-10-16 | 2003-01-09 | Novartis Ag | 1, 2, 3, 4a, 5, 10, 10a-Octahydrobenzo(g)chinolin-Derivate mit pharmazeutischer Wirkung |
FR2580631B1 (fr) * | 1985-04-17 | 1987-05-29 | Cird | Hydroxy-1 acyloxy-8 acyl-10 anthrones, leur procede de preparation et leur utilisation en medecine humaine ou veterinaire et en cosmetique |
US4766109A (en) * | 1986-10-17 | 1988-08-23 | Schering Corporation | Hydrophobic peptides |
US4810636A (en) * | 1986-12-09 | 1989-03-07 | Miles Inc. | Chromogenic acridinone enzyme substrates |
US4851536A (en) * | 1987-05-07 | 1989-07-25 | American Home Products Corporation | Cyclohexylquinolines as inhibitors of interleukin 1 |
US5101059A (en) * | 1989-12-05 | 1992-03-31 | Research Corporation Technologies, Inc. | Amino acid protecting groups |
US5198548A (en) * | 1992-01-30 | 1993-03-30 | Warner-Lambert Company | Process for the preparation of D(-) and L(+)-3,3-diphenylalanine and D(-) and L(+)-substituted 3,3-diphenylalanines and derivatives thereof |
US5264577A (en) * | 1992-04-22 | 1993-11-23 | Warner-Lambert Company | Cyclic amino acids and derivatives thereof |
DE4231636A1 (de) * | 1992-09-22 | 1994-03-24 | Beiersdorf Ag | Neue in 10-Stellung substituierte Anthron- und Anthracen-Derivate, Verfahren zu deren Herstellung, diese Verbindungen enthaltende pharmazeutische oder kosmetische Mittel und deren Verwendung |
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1992
- 1992-04-22 US US07/872,742 patent/US5264577A/en not_active Expired - Fee Related
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1993
- 1993-04-16 CZ CZ19942568A patent/CZ288529B6/cs not_active IP Right Cessation
- 1993-04-16 KR KR1019940703746A patent/KR100269758B1/ko not_active Expired - Fee Related
- 1993-04-16 KR KR1020007001540A patent/KR100270305B1/ko not_active Expired - Fee Related
- 1993-04-16 NZ NZ252854A patent/NZ252854A/en unknown
- 1993-04-16 RU RU94046047/04A patent/RU2111206C1/ru not_active IP Right Cessation
- 1993-04-16 CA CA002133089A patent/CA2133089C/en not_active Expired - Fee Related
- 1993-04-16 EP EP93912309A patent/EP0637305A1/en not_active Ceased
- 1993-04-16 KR KR1020007001541A patent/KR100270306B1/ko not_active Expired - Fee Related
- 1993-04-16 JP JP51865693A patent/JP3276960B2/ja not_active Expired - Fee Related
- 1993-04-16 FI FI944906A patent/FI944906A7/fi not_active IP Right Cessation
- 1993-04-16 WO PCT/US1993/003657 patent/WO1993021176A1/en active IP Right Grant
- 1993-04-16 SK SK1286-94A patent/SK282479B6/sk unknown
- 1993-04-16 AU AU42903/93A patent/AU672209B2/en not_active Ceased
- 1993-04-21 MX MX9302327A patent/MX9302327A/es not_active IP Right Cessation
- 1993-08-20 US US08/109,797 patent/US5380925A/en not_active Expired - Fee Related
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1994
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KR100270306B1 (ko) | 2000-10-16 |
AU672209B2 (en) | 1996-09-26 |
CZ288529B6 (cs) | 2001-07-11 |
WO1993021176A1 (en) | 1993-10-28 |
CA2133089A1 (en) | 1993-10-28 |
FI944906L (fi) | 1994-10-19 |
RU2111206C1 (ru) | 1998-05-20 |
NO304828B1 (no) | 1999-02-22 |
KR100270305B1 (ko) | 2000-10-16 |
SK128694A3 (en) | 1995-05-10 |
FI944906A0 (fi) | 1994-10-19 |
FI944906A7 (fi) | 1994-10-19 |
CA2133089C (en) | 2004-06-29 |
US5449778A (en) | 1995-09-12 |
NO944014L (no) | 1994-12-21 |
US5380925A (en) | 1995-01-10 |
NZ252854A (en) | 1995-11-27 |
CZ256894A3 (en) | 1995-04-12 |
JPH07506100A (ja) | 1995-07-06 |
AU4290393A (en) | 1993-11-18 |
KR950701331A (ko) | 1995-03-23 |
EP0637305A1 (en) | 1995-02-08 |
JP3276960B2 (ja) | 2002-04-22 |
NO944014D0 (no) | 1994-10-21 |
RU94046047A (ru) | 1996-09-27 |
SK282479B6 (sk) | 2002-02-05 |
MX9302327A (es) | 1993-10-01 |
US5264577A (en) | 1993-11-23 |
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