NO982149L - FremgangsmÕte for fremstilling av (1S,4R)- eller (1R,4S)-4-(2-amino-6-klor-9H-pyrin-9-yl)-2-cyklopenten-1-metanol - Google Patents

FremgangsmÕte for fremstilling av (1S,4R)- eller (1R,4S)-4-(2-amino-6-klor-9H-pyrin-9-yl)-2-cyklopenten-1-metanol

Info

Publication number: NO982149L
Authority: NO; Norway
Prior art keywords: amino; cyclopentene; formula; optically active; carboxylic acid
Prior art date: 1997-05-13

Application number

NO982149A

Other languages

English (en)

Other versions

NO324679B1 (no

NO982149D0 (no

Inventor

Christine Bernegger

Eva Maria Urban

Olwen Mary Birch

Kurt Burgdorf

Frank Brux

Kay-Sara Etter

Pierre Bossard

Walter Brieden

Laurent Duc

John Gordon

Colm O'murchu

Yves Guggisberg

Original Assignee

Lonza Ag

Priority date (The priority date 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 date listed.)

1997-05-13

Filing date

1998-05-12

Publication date

1998-11-16

1998-05-12 Application filed by Lonza Ag filed Critical Lonza Ag

1998-05-12 Publication of NO982149D0 publication Critical patent/NO982149D0/no

1998-11-16 Publication of NO982149L publication Critical patent/NO982149L/no

2007-12-03 Publication of NO324679B1 publication Critical patent/NO324679B1/no

Links

238000000034 method Methods 0.000 title abstract 2
OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Substances OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title 1
239000002253 acid Substances 0.000 abstract 2
230000010933 acylation Effects 0.000 abstract 2
238000005917 acylation reaction Methods 0.000 abstract 2
UXKZFJDNFBNQHE-UHFFFAOYSA-N (4-aminocyclopent-2-en-1-yl)methanol Chemical class NC1CC(CO)C=C1 UXKZFJDNFBNQHE-UHFFFAOYSA-N 0.000 abstract 1
VTCHZFWYUPZZKL-UHFFFAOYSA-N 4-azaniumylcyclopent-2-ene-1-carboxylate Chemical compound NC1CC(C(O)=O)C=C1 VTCHZFWYUPZZKL-UHFFFAOYSA-N 0.000 abstract 1
125000003545 alkoxy group Chemical group 0.000 abstract 1
125000000217 alkyl group Chemical group 0.000 abstract 1
125000003118 aryl group Chemical group 0.000 abstract 1
125000004104 aryloxy group Chemical group 0.000 abstract 1
125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract 1
-1 carboxylic acid halide Chemical class 0.000 abstract 1
LMYOLOWXQDLHKQ-UHFFFAOYSA-N cyclopent-2-en-1-ylmethanol Chemical class OCC1CCC=C1 LMYOLOWXQDLHKQ-UHFFFAOYSA-N 0.000 abstract 1
XVSYDLITVYBCBD-UHFFFAOYSA-N cyclopent-3-ene-1-carboxylic acid Chemical class OC(=O)C1CC=CC1 XVSYDLITVYBCBD-UHFFFAOYSA-N 0.000 abstract 1
150000004820 halides Chemical class 0.000 abstract 1
229910052736 halogen Inorganic materials 0.000 abstract 1
150000002367 halogens Chemical class 0.000 abstract 1

Classifications

- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
- C07D473/26—Heterocyclic compounds containing purine ring systems with an oxygen, sulphur, or nitrogen atom directly attached in position 2 or 6, but not in both
- C07D473/32—Nitrogen atom
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/16—Preparation of optical isomers
- C07C231/18—Preparation of optical isomers by stereospecific synthesis
- C—CHEMISTRY; METALLURGY
- 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
- C07C233/16—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 singly-bound oxygen atoms
- C07C233/23—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 singly-bound oxygen atoms with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by a carbon atom of a ring other than a six-membered aromatic ring
- C—CHEMISTRY; METALLURGY
- 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
- C07C271/24—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atom of at least one of the carbamate groups bound to a carbon atom of a ring other than a six-membered aromatic ring
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/56—Ring systems containing three or more rings
- C07D209/80—[b, c]- or [b, d]-condensed
- C07D209/94—[b, c]- or [b, d]-condensed containing carbocyclic rings other than six-membered
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
- C07D473/40—Heterocyclic compounds containing purine ring systems with halogen atoms or perhalogeno-alkyl radicals directly attached in position 2 or 6
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P13/00—Preparation of nitrogen-containing organic compounds
- C12P13/001—Amines; Imines
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P13/00—Preparation of nitrogen-containing organic compounds
- C12P13/02—Amides, e.g. chloramphenicol or polyamides; Imides or polyimides; Urethanes, i.e. compounds comprising N-C=O structural element or polyurethanes
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P17/00—Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms
- C12P17/18—Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms containing at least two hetero rings condensed among themselves or condensed with a common carbocyclic ring system, e.g. rifamycin
- C12P17/182—Heterocyclic compounds containing nitrogen atoms as the only ring heteroatoms in the condensed system
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/07—Optical isomers
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/06—Systems containing only non-condensed rings with a five-membered ring
- C07C2601/10—Systems containing only non-condensed rings with a five-membered ring the ring being unsaturated

Landscapes

Organic Chemistry (AREA)
Chemical & Material Sciences (AREA)
Life Sciences & Earth Sciences (AREA)
Wood Science & Technology (AREA)
Engineering & Computer Science (AREA)
Zoology (AREA)
Bioinformatics & Cheminformatics (AREA)
Genetics & Genomics (AREA)
General Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Health & Medical Sciences (AREA)
Biochemistry (AREA)
Biotechnology (AREA)
General Engineering & Computer Science (AREA)
General Health & Medical Sciences (AREA)
Microbiology (AREA)
Proteomics, Peptides & Aminoacids (AREA)
Preparation Of Compounds By Using Micro-Organisms (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Nitrogen Condensed Heterocyclic Rings (AREA)
Micro-Organisms Or Cultivation Processes Thereof (AREA)
Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Indole Compounds (AREA)
Peptides Or Proteins (AREA)

NO19982149A 1997-05-13 1998-05-12 (1S,4R)- eller (1R,4S)-4-(2-amino-6-klor-9H-pyrin-9-yl)-2-cyklopenten-1-metanol og fremgangsmate for fremstilling av slike. NO324679B1 (no)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
CH111697		1997-05-13
CH274097		1997-11-27

Publications (3)

Publication Number	Publication Date
NO982149D0 NO982149D0 (no)	1998-05-12
NO982149L true NO982149L (no)	1998-11-16
NO324679B1 NO324679B1 (no)	2007-12-03

Family

ID=25686703

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NO19982149A NO324679B1 (no)	1997-05-13	1998-05-12	(1S,4R)- eller (1R,4S)-4-(2-amino-6-klor-9H-pyrin-9-yl)-2-cyklopenten-1-metanol og fremgangsmate for fremstilling av slike.

Country Status (16)

Country	Link
US (4)	US6156893A (no)
EP (2)	EP1502914A1 (no)
JP (3)	JP4540136B2 (no)
KR (2)	KR100577886B1 (no)
CN (2)	CN1115343C (no)
AT (1)	ATE275206T1 (no)
CA (1)	CA2237297C (no)
CZ (3)	CZ297887B6 (no)
DE (1)	DE59811884D1 (no)
DK (1)	DK0878548T3 (no)
ES (1)	ES2223095T3 (no)
HU (1)	HU226327B1 (no)
NO (1)	NO324679B1 (no)
PL (1)	PL197848B1 (no)
PT (1)	PT878548E (no)
SK (3)	SK285228B6 (no)

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AU677851B2 (en) *	1993-06-21	1997-05-08	Merrell Pharmaceuticals Inc.	Novel carbocyclic nucleoside agents useful as selective inhibitors of proinflammatory cytokines
GB9717928D0 (en) *	1997-08-22	1997-10-29	Glaxo Group Ltd	Process for the enatioselective hydrolysis of n-derivatised lactams
GB9721780D0 (en) *	1997-10-14	1997-12-10	Glaxo Group Ltd	Process for the synthesis of chloropurine intermediates
CZ298102B6 (cs) *	1997-11-27	2007-06-20	Lonza Ag	Zpusob výroby aminoalkoholu
DK1141374T3 (da) *	1998-12-23	2004-02-16	Lonza Ag	Fremgangsmåde til fremstilling af optisk aktive derivater af 1-amino-4(hydroxymethyl)-cyclopent-2-en
PL1648851T3 (pl) *	2003-07-25	2007-09-28	Prometic Biosciences Inc	Wytwarzanie soli średniołańcuchowych kwasów tłuszczowych z metalami
DE102005061756B4 (de) *	2005-12-21	2008-01-03	Sanofi-Aventis Deutschland Gmbh	Verbessertes Verfahren zur Herstellung von Ramipril
US8236853B1 (en)	2007-12-03	2012-08-07	University Of South Florida	Formation of cyclopentene nitro-ester and derivatives
JP2014505059A (ja)	2011-01-18	2014-02-27	ジェネラルアトミクス	ヒドロラーゼ酵素基質およびその使用
CN102557990B (zh) *	2011-04-25	2014-06-25	开原亨泰制药股份有限公司	(1s，4r)n-叔丁氧羰基-4-氨基-2-环戊烯-1-羧酸甲酯的制备方法
CN119350339A (zh) *	2024-11-25	2025-01-24	安徽贝克制药股份有限公司	一种阿巴卡韦杂质的制备方法及用途

Family Cites Families (12)

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US4950758A (en) *	1988-01-20	1990-08-21	Regents Of The University Of Minnesota	Optically-active isomers of dideoxycarbocyclic nucleosides
US4931559A (en) *	1988-01-20	1990-06-05	Regents Of The University Of Minnesota	Optically-active isomers of dideoxycarbocyclic nucleosides
MY104575A (en) *	1989-12-22	1994-04-30	The Wellcome Foundation Ltd	Therapeutic nucleosides.
CA2055086A1 (en) *	1991-02-12	1992-08-13	Chikara Kaneko	Cyclopentene derivatives and their use
US5200527A (en) *	1991-04-08	1993-04-06	Lonza Ltd.	Process for the production of 2-azabicyclo [2.2.1] hept-5-en-3-one
GB9204015D0 (en) *	1992-02-25	1992-04-08	Wellcome Found	Therapeutic nucleosides
GB9205071D0 (en) *	1992-03-09	1992-04-22	Wellcome Found	Therapeutic nucleosides
GB9217823D0 (en) *	1992-08-21	1992-10-07	Glaxo Group Ltd	Chemical process
JPH06116217A (ja) *	1992-10-02	1994-04-26	Kuraray Co Ltd	（±）−シス−４−アミノシクロペント−２−エンカルボン酸誘導体の光学分割法
GB9402161D0 (en) *	1994-02-04	1994-03-30	Wellcome Found	Chloropyrimidine intermediates
KR100577891B1 (ko) *	1996-05-30	2006-05-10	론자 아게	Ｎ-아실아미노-알코올 히드롤라제 활성을 갖는 효소
GB9625455D0 (en) *	1996-12-07	1997-01-22	Glaxo Group Ltd	Process for resolving mixtures of carbocyclic steroisomers

1998
- 1998-05-04 SK SK53-2005A patent/SK285228B6/sk not_active IP Right Cessation
- 1998-05-04 SK SK54-2005A patent/SK285229B6/sk not_active IP Right Cessation
- 1998-05-04 SK SK589-98A patent/SK284810B6/sk not_active IP Right Cessation
- 1998-05-06 US US09/073,553 patent/US6156893A/en not_active Expired - Fee Related
- 1998-05-11 CA CA002237297A patent/CA2237297C/en not_active Expired - Fee Related
- 1998-05-11 CZ CZ20060694A patent/CZ297887B6/cs not_active IP Right Cessation
- 1998-05-11 CZ CZ20060695A patent/CZ297888B6/cs not_active IP Right Cessation
- 1998-05-11 KR KR1019980016803A patent/KR100577886B1/ko not_active Expired - Fee Related
- 1998-05-11 CZ CZ0145898A patent/CZ297894B6/cs not_active IP Right Cessation
- 1998-05-12 NO NO19982149A patent/NO324679B1/no not_active IP Right Cessation
- 1998-05-12 JP JP12933898A patent/JP4540136B2/ja not_active Expired - Fee Related
- 1998-05-13 ES ES98108721T patent/ES2223095T3/es not_active Expired - Lifetime
- 1998-05-13 EP EP04020273A patent/EP1502914A1/de not_active Withdrawn
- 1998-05-13 DK DK98108721T patent/DK0878548T3/da active
- 1998-05-13 EP EP98108721A patent/EP0878548B1/de not_active Expired - Lifetime
- 1998-05-13 PT PT98108721T patent/PT878548E/pt unknown
- 1998-05-13 DE DE59811884T patent/DE59811884D1/de not_active Expired - Lifetime
- 1998-05-13 CN CN98108865A patent/CN1115343C/zh not_active Expired - Fee Related
- 1998-05-13 PL PL326267A patent/PL197848B1/pl not_active IP Right Cessation
- 1998-05-13 HU HU9801083A patent/HU226327B1/hu not_active IP Right Cessation
- 1998-05-13 AT AT98108721T patent/ATE275206T1/de active
- 1998-05-13 CN CNB03123433XA patent/CN1302116C/zh not_active Expired - Fee Related
1999
- 1999-08-13 US US09/373,862 patent/US6137007A/en not_active Expired - Fee Related
- 1999-08-13 US US09/373,856 patent/US6262295B1/en not_active Expired - Fee Related
- 1999-08-13 US US09/373,857 patent/US6252112B1/en not_active Expired - Fee Related
2005
- 2005-10-19 KR KR1020050098642A patent/KR100601764B1/ko not_active Expired - Fee Related
2009
- 2009-11-09 JP JP2009256398A patent/JP2010116397A/ja active Pending
- 2009-11-09 JP JP2009256399A patent/JP2010106025A/ja active Pending

Also Published As

Publication number	Publication date
SK285229B6 (sk)	2006-09-07
CN1115343C (zh)	2003-07-23
CN1515673A (zh)	2004-07-28
EP0878548A3 (de)	1999-10-13
JPH115793A (ja)	1999-01-12
JP2010116397A (ja)	2010-05-27
CZ145898A3 (cs)	1998-12-16
DE59811884D1 (de)	2004-10-07
DK0878548T3 (da)	2004-12-06
JP4540136B2 (ja)	2010-09-08
EP1502914A1 (de)	2005-02-02
US6137007A (en)	2000-10-24
CN1302116C (zh)	2007-02-28
ES2223095T3 (es)	2005-02-16
CZ297888B6 (cs)	2007-04-18
CZ297887B6 (cs)	2007-04-18
ATE275206T1 (de)	2004-09-15
HUP9801083A2 (hu)	1999-11-29
JP2010106025A (ja)	2010-05-13
US6262295B1 (en)	2001-07-17
SK285228B6 (sk)	2006-09-07
HU9801083D0 (en)	1998-07-28
KR19980086933A (ko)	1998-12-05
SK284810B6 (sk)	2005-12-01
KR100577886B1 (ko)	2006-08-30
CA2237297C (en)	2008-03-11
CN1201794A (zh)	1998-12-16
HK1092782A1 (en)	2007-02-16
PL326267A1 (en)	1998-11-23
KR100601764B1 (ko)	2006-07-19
CZ297894B6 (cs)	2007-04-25
NO324679B1 (no)	2007-12-03
CA2237297A1 (en)	1998-11-13
US6252112B1 (en)	2001-06-26
HUP9801083A3 (en)	2001-09-28
PT878548E (pt)	2005-01-31
EP0878548A2 (de)	1998-11-18
HU226327B1 (en)	2008-08-28
NO982149D0 (no)	1998-05-12
PL197848B1 (pl)	2008-05-30
EP0878548B1 (de)	2004-09-01
US6156893A (en)	2000-12-05
SK58998A3 (en)	1998-12-02

Legal Events

Date	Code	Title	Description
2012-12-27	MM1K	Lapsed by not paying the annual fees

Publication	Publication Date	Title
NO982149D0 (no)	1998-05-12	FremgangsmÕte for fremstilling av (1S,4R)- eller (1R,4S)-4-(2-amino-6-klor-9H-pyrin-9-yl)
DE69226822D1 (de)	1998-10-08	Diastereomeres Salz von optisch aktiver Chinolinmevalonsäure
AU2898392A (en)	1993-06-15	Method of separating the enantiomers of 5-methyl-tetrahydrofolic acid
DE59409378D1 (de)	2000-07-06	Verfahren zur Herstellung von 3R,5S-(+)-Natrium-erythro-(E)-7-[4-(4-fluorphenyl)--2,6-diisopropyl-5-methoxymethyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-enoat
CY1110919T1 (el)	2015-06-10	Μεθοδος για τον ενζυματικο διαχωρισμο εναντιομερων της 3(r)- kai 3(s)-υδροξυ-1-μεθυλο-4-(2,4,6-τριμεθοξυφαινυλο)-1,2,3,6-τετραϋδρο-πυριδινης ή των εστερων καρβοξυλικου οξεος αυτης.
DK0926131T3 (da)	2004-05-24	Fremgangsmåde til fremstilling af 1-amino-4-(hydroxymethyl)-2-cyclopenten
RU94046047A (ru)	1996-09-27	Производные аминоуксусной кислоты в виде рацемата или d- и l-энантиомеров и их фармацевтически приемлемые соли, способ получения d- и l-энантиомеров производных аминоуксусной кислоты или их фармацевтически приемлемых солей и промежуточные d- и l-энантиомеры аминоуксусной кислоты в виде цинхонидиновой соли
EP0983999B8 (en)	2005-06-08	Process for producing amide derivatives and intermediates
AU2003289250A1 (en)	2004-06-30	Processes for producing (4e)-5-chloro-2-isopropyl-4-pentenoic ester and optically active isomer thereof
DK0388188T3 (da)	1994-02-14	Benzoxepinderivater
AU7369691A (en)	1991-11-14	Process and intermediates for 2r-benzyl-chroman-6- carbaldehyde
ATE121404T1 (de)	1995-05-15	Verfahren zur optischen aufspaltung von pyranobenzoxadiazolverbindungen.
DK0464488T3 (da)	1996-02-12	Optisk aktive N-alfa-fluoracryloylaminosyre-derivater, deres fremstilling, de deraf fremstillede optisk aktive polymerer og deres anvendelse til spaltning af racemater
CA2320756A1 (en)	1999-08-26	Process for the production of optically enriched (r)- or (s)-albuterol
ATE439333T1 (de)	2009-08-15	Verfahren zur herstellung optisch aktiver propoxyanilinderivate
EA200000279A1 (ru)	2000-08-28	Способ повышения оптической чистоты 2r-[1-гидрокси-1-трифторметил-3-циклопропилпропин-2-ил]-4-хлоранилина
ATE402940T1 (de)	2008-08-15	Verfahren zur herstellung von 3-cephem- verbindungen
DK0614908T3 (da)	1997-10-13	Fremgangsmåde til fremstilling af 3beta-aminocholansyrederivater.
DE3789411D1 (de)	1994-04-28	Dihydropyridin-5-phosphonsaure zyklische Ester.
ATE83479T1 (de)	1993-01-15	Herstellung von pyridazinon.
WO2002008208A1 (en)	2002-01-31	Process for the preparation of optically active thiazolidinone derivatives
MX9700590A (es)	1997-07-31	Procedimiento para la preparacion de acidos carboxilicos organicos alfa, beta-insaturados.
ATE244228T1 (de)	2003-07-15	Verfahren zur herstellung von chloroacetylaminothiazoleaceticsäure derivate
DE69901262D1 (de)	2002-05-16	2-ethyl-2,3-dihydrobenzofuran-carbonsäure-ester-derivat, herstellungsverfahren und verwendung zur herstellung von efaroxan-derivaten
ATE248841T1 (de)	2003-09-15	Verfahren zur herstellung von penicilling- phenylester