SG70958A1 - Hydroxymethyl (mrthylenecyclopentyl) purines and pyrimidines - Google Patents

Hydroxymethyl (mrthylenecyclopentyl) purines and pyrimidines

Info

Publication number: SG70958A1
Authority: SG; Singapore
Prior art keywords: mrthylenecyclopentyl; purines; pyrimidines; hydroxymethyl; chem
Prior art date: 1990-10-18

Application number

SG1996002080A

Other languages

English (en)

Inventor

Robert Zahler

William A Slusarchy

Original Assignee

Squibb & Sons Inc

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.)

1990-10-18

Filing date

1991-10-16

Publication date

2000-03-21

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24400159&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SG70958(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1991-10-16 Application filed by Squibb & Sons Inc filed Critical Squibb & Sons Inc

2000-03-21 Publication of SG70958A1 publication Critical patent/SG70958A1/en

Links

Classifications

- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed 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
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/47—One nitrogen atom and one oxygen or sulfur atom, e.g. cytosine
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
- 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
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/52—Two oxygen atoms
- C07D239/54—Two oxygen atoms as doubly bound oxygen atoms or as unsubstituted hydroxy 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
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/52—Two oxygen atoms
- C07D239/54—Two oxygen atoms as doubly bound oxygen atoms or as unsubstituted hydroxy radicals
- C07D239/545—Two oxygen atoms as doubly bound oxygen atoms or as unsubstituted hydroxy radicals with other 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
- C07D239/553—Two oxygen atoms as doubly bound oxygen atoms or as unsubstituted hydroxy radicals with other 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 with halogen atoms or nitro radicals directly attached to ring carbon atoms, e.g. fluorouracil
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems

Landscapes

Organic Chemistry (AREA)
Chemical & Material Sciences (AREA)
Health & Medical Sciences (AREA)
Life Sciences & Earth Sciences (AREA)
General Health & Medical Sciences (AREA)
General Chemical & Material Sciences (AREA)
Medicinal Chemistry (AREA)
Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
Chemical Kinetics & Catalysis (AREA)
Pharmacology & Pharmacy (AREA)
Oncology (AREA)
Animal Behavior & Ethology (AREA)
Communicable Diseases (AREA)
Public Health (AREA)
Veterinary Medicine (AREA)
Virology (AREA)
Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Saccharide Compounds (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Nitrogen Condensed Heterocyclic Rings (AREA)
Steroid Compounds (AREA)
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Plural Heterocyclic Compounds (AREA)
Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Tires In General (AREA)
Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

SG1996002080A 1990-10-18 1991-10-16 Hydroxymethyl (mrthylenecyclopentyl) purines and pyrimidines SG70958A1 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US59956890A	1990-10-18	1990-10-18

Publications (1)

Publication Number	Publication Date
SG70958A1 true SG70958A1 (en)	2000-03-21

Family

ID=24400159

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SG1996002080A SG70958A1 (en)	1990-10-18	1991-10-16	Hydroxymethyl (mrthylenecyclopentyl) purines and pyrimidines

Country Status (28)

Country	Link
US (1)	US5206244A (fr)
EP (1)	EP0481754B1 (fr)
JP (1)	JP2994117B2 (fr)
KR (1)	KR0160523B1 (fr)
CN (1)	CN1030916C (fr)
AT (1)	ATE157095T1 (fr)
AU (1)	AU634423B2 (fr)
BR (1)	BR1100846A (fr)
CA (1)	CA2053339C (fr)
CY (2)	CY2063B1 (fr)
DE (3)	DE69127336T2 (fr)
DK (1)	DK0481754T3 (fr)
ES (1)	ES2104673T3 (fr)
FI (1)	FI109905B (fr)
GR (1)	GR3025395T3 (fr)
HK (1)	HK1001343A1 (fr)
HU (1)	HU213207B (fr)
IE (1)	IE913451A1 (fr)
IL (1)	IL99755A (fr)
LU (1)	LU91275I2 (fr)
NL (1)	NL300241I1 (fr)
NO (2)	NO179906C (fr)
NZ (1)	NZ240053A (fr)
PL (1)	PL169403B1 (fr)
PT (1)	PT99281B (fr)
RU (1)	RU2037496C1 (fr)
SG (1)	SG70958A1 (fr)
ZA (1)	ZA917894B (fr)

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EP0630897A3 (fr) *	1993-06-25	1995-03-01	Bristol Myers Squibb Co	3-Hydroxy-4-hydroxyméthyl-2-methylène-cyclopentyl purines et pyrimidines.
WO1996001834A1 (fr) *	1994-07-12	1996-01-25	Yamasa Corporation	2'-desoxy-2'-(methylidene substitue ou non substitue)-4'-thionucleoside
AU4303996A (en) *	1994-12-19	1996-07-10	Novartis Ag	6'-substituted carbocyclic nucleosides
GB9520363D0 (en) *	1995-10-05	1995-12-06	Chiroscience Ltd	Compounds
AU4090697A (en) *	1996-09-03	1998-03-26	Bristol-Myers Squibb Company	Improved process for preparing the antiviral agent {1s-(1alpha, 3alpha, 4beta)}-2-amino-1,9-dihydro-9-{4-hydroxy-3-(hydroxymethyl)-2 -methylenecyclopentyl}-6h-purin-6-one
US6444652B1 (en)	1998-08-10	2002-09-03	Novirio Pharmaceuticals Limited	β-L-2'-deoxy-nucleosides for the treatment of hepatitis B
DK2415776T3 (en) *	1998-08-10	2016-07-04	Novartis Ag	Beta-L-2'-deoxy nucleosides for the treatment of Hepatitis B
US6432966B2 (en)	1999-10-29	2002-08-13	Smithkline Beecham Corporation	Antiviral combinations
JP5140222B2 (ja) *	2000-02-29	2013-02-06	ブリストル−マイヤーズスクイブカンパニー	低用量エンテカビル製剤およびその使用
CN101385732A (zh) *	2000-02-29	2009-03-18	布里斯托尔-迈尔斯斯奎布公司	低剂量艾替开韦制剂及其应用
US20020056123A1 (en) *	2000-03-09	2002-05-09	Gad Liwerant	Sharing a streaming video
TWI275392B (en) *	2002-04-08	2007-03-11	Bristol Myers Squibb Co	Low dose liquid entecavir formulations and use
US7153691B2 (en) *	2002-11-13	2006-12-26	G6 Science Corp.	Method of identifying and assessing DNA euchromatin in biological cells for detecting disease, monitoring wellness, assessing bio-activity, and screening pharmacological agents
IN2012DN00605A (fr) *	2002-12-11	2015-06-12	Bristol Mayers Squibb Company
TW200540175A (en) *	2004-06-04	2005-12-16	Bristol Myers Squibb Co	Process for the preparation of entecavir and novel intermediates thereof via carbon-silicon oxidation
US7511139B2 (en) *	2004-06-04	2009-03-31	Bristol-Myers Squibb Company	Process for the preparation of entecavir and novel intermediates thereof via carbon-silicon oxidation
CN100379736C (zh) *	2005-05-13	2008-04-09	上海仲夏化学有限公司	恩替卡韦的制备方法
CN1699366A (zh) *	2005-06-03	2005-11-23	北京市典范科技有限责任公司	嘌呤衍生物
CN1907987B (zh) *	2005-08-03	2010-05-05	江苏正大天晴药业股份有限公司	恩地卡韦酸加成盐及其制备方法和用途
US20070060599A1 (en) *	2005-09-09	2007-03-15	Dimarco John D	Crystalline forms of [1S-(1alpha, 3alpha, 4beta)]-2-amino-1,9-dihydro-9-[4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one
CN101016299B (zh) *	2006-02-09	2010-05-12	北京典范科技有限责任公司	制备嘌呤衍生物的新方法
CN101130542B (zh) *	2006-08-24	2010-08-04	江苏正大天晴药业股份有限公司	抗病毒核苷类似物的合成方法
CN101210015B (zh) *	2006-12-26	2010-09-22	上海国创医药有限公司	一种乙肝治疗药物恩替卡韦的制备方法
CN101245068A (zh) *	2007-02-14	2008-08-20	浙江医药股份有限公司新昌制药厂	结晶型态的恩替卡韦及其制备方法和其药物组合物及用途
CN101074217B (zh) *	2007-04-04	2010-11-24	北京精华***医药科技有限公司	通过制备色谱分离得到高纯度恩替卡韦关键中间体的方法
EP2159224B1 (fr)	2007-06-18	2012-08-01	Sunshine Lake Pharma Co., Ltd	Thiazolyl-dihydropyrimidines à substitution bromo-phényle
US20090076038A1 (en) *	2007-09-14	2009-03-19	Protia, Llc	Deuterium-enriched entecavir
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EA019295B1 (ru)	2008-12-23	2014-02-28	Джилид Фармассет, Ллс.	Соединения пуриновых нуклеозидов и способ их получения
US8551973B2 (en) *	2008-12-23	2013-10-08	Gilead Pharmasset Llc	Nucleoside analogs
EP2376088B1 (fr)	2008-12-23	2017-02-22	Gilead Pharmasset LLC	Phosphoramidates de nucléosides de type 2-amino-purine 6-O-substituée
KR101150254B1 (ko) *	2008-12-26	2012-06-12	한미사이언스 주식회사	신규 중간체 및 이를 활용한 엔테카비르 제조방법
CN101531660B (zh) *	2009-04-14	2012-07-04	安徽贝克联合制药有限公司	一种恩替卡韦一水合物的工业化生产工艺
CA2777018C (fr) *	2009-10-12	2014-04-29	Hanmi Holdings Co., Ltd.	Nouveau procede de preparation d'entecavir et ses intermediaires
US9700560B2 (en) *	2009-11-16	2017-07-11	University Of Georgia Research Foundation, Inc.	2′-fluoro-6′-methylene carbocyclic nucleosides and methods of treating viral infections
CN101759698B (zh) *	2009-12-15	2012-01-18	上海医药集团股份有限公司	一种恩替卡韦的制备方法
US8481728B2 (en) *	2010-02-16	2013-07-09	Scinopharm Taiwan, Ltd.	Process for preparing entecavir and its intermediates
JP2013527145A (ja)	2010-03-31	2013-06-27	ギリード・ファーマセット・エルエルシー	リン含有活性化剤の立体選択的合成
CA2705953C (fr)	2010-05-31	2018-05-01	Alphora Research Inc.	Synthese de carbanucleoside et composes intermediaires utiles pour la synthese
EP2474548A1 (fr)	2010-12-23	2012-07-11	Esteve Química, S.A.	Procédé de préparation d'un médicament antiviral et ses intermédiaires
EP2508172A1 (fr)	2011-04-06	2012-10-10	Zentiva, a.s.	Formulations stables et uniformes d'entecavir et procédé de préparation correspondant
CN102491960A (zh) *	2011-11-16	2012-06-13	福建广生堂药业股份有限公司	一种合成恩替卡韦的中间体及其制备方法和应用
EP2597096A1 (fr)	2011-11-24	2013-05-29	Esteve Química, S.A.	Procédé de préparation d'entecavir et intermédiaires associés
CN103304375B (zh) *	2012-03-12	2017-04-12	浙江奥翔药业股份有限公司	恩替卡韦的合成中间体及其制备方法
AU2013257951A1 (en)	2012-05-11	2015-01-22	Akron Molecules Ag	Use of compounds for the treatment of pain
CA2889903C (fr)	2012-10-29	2021-03-09	Manjinder Singh Phull	Analogues de phosphonate antiviraux et leur procede de preparation
EP2832351A1 (fr)	2013-07-29	2015-02-04	Sanovel Ilac Sanayi ve Ticaret A.S.	Comprimé multicouche comprenant du tenofovir et de l'entecavir
WO2015051900A1 (fr)	2013-10-08	2015-04-16	Pharmathen S.A.	Procédé de préparation d'entécavir au moyen de nouveaux intermédiaires
KR101640504B1 (ko) *	2015-04-15	2016-07-18	동방에프티엘(주)	엔테카비르 일수화물의 제조방법
KR101640503B1 (ko) *	2015-04-15	2016-07-18	동방에프티엘(주)	엔테카비르 일수화물의 개선된 제조방법
JP6912100B2 (ja) *	2016-11-16	2021-07-28	国立研究開発法人国立国際医療研究センター	抗ウイルス活性等の生理活性を有するヌクレオシド誘導体
CN108203435B (zh) *	2016-12-16	2020-09-04	正大天晴药业集团股份有限公司	一种利用Boc保护基的恩替卡韦的制备方法
CN106749251A (zh) *	2017-01-17	2017-05-31	博瑞生物医药泰兴市有限公司	一种恩替卡韦中间体的合成与提纯方法
KR102197257B1 (ko) *	2017-10-19	2020-12-31	단국대학교 천안캠퍼스 산학협력단	엔테카비어 지방산 에스테르 유도체 수성현탁액의 안정화 조성물
CN109956975B (zh) *	2017-12-22	2020-11-06	浙江柏拉阿图医药科技有限公司	肝递送恩替卡韦前体药物核苷环磷酸酯化合物及应用
CN113544122A (zh) *	2018-12-12	2021-10-22	詹森生物制药有限公司	作为抗病毒药的环戊基核苷类似物
CN113024574B (zh) *	2019-12-25	2024-03-29	南通诺泰生物医药技术有限公司	一种氧杂二环己烷类化合物的制备方法
CN111732589B (zh) *	2020-06-08	2021-07-30	王乔	一种改进的恩替卡韦中间体合成工艺以及改进的恩替卡韦合成工艺
CN112625041A (zh) *	2020-12-25	2021-04-09	常州博海威医药科技股份有限公司	恩替卡韦的新制备方法以及中间体
CN115433188B (zh) *	2022-09-29	2024-07-12	苏州东瑞制药有限公司	一种恩替卡韦的制备方法
CN115819422A (zh) *	2022-12-13	2023-03-21	淄博矿业集团有限责任公司	恩替卡韦中间体制备新工艺方法及分析方法

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1991
- 1991-09-20 US US07/763,033 patent/US5206244A/en not_active Expired - Lifetime
- 1991-10-01 NZ NZ240053A patent/NZ240053A/xx not_active IP Right Cessation
- 1991-10-01 IE IE345191A patent/IE913451A1/en active Protection Beyond IP Right Term
- 1991-10-02 ZA ZA917894A patent/ZA917894B/xx unknown
- 1991-10-04 AU AU85598/91A patent/AU634423B2/en not_active Expired
- 1991-10-11 CA CA002053339A patent/CA2053339C/fr not_active Expired - Lifetime
- 1991-10-15 IL IL9975591A patent/IL99755A/en not_active IP Right Cessation
- 1991-10-16 SG SG1996002080A patent/SG70958A1/en unknown
- 1991-10-16 DE DE69127336T patent/DE69127336T2/de not_active Expired - Lifetime
- 1991-10-16 EP EP91309525A patent/EP0481754B1/fr not_active Expired - Lifetime
- 1991-10-16 ES ES91309525T patent/ES2104673T3/es not_active Expired - Lifetime
- 1991-10-16 AT AT91309525T patent/ATE157095T1/de active
- 1991-10-16 DE DE1991627336 patent/DE122006000069I1/de active Pending
- 1991-10-16 DK DK91309525.3T patent/DK0481754T3/da active
- 1991-10-17 KR KR1019910018259A patent/KR0160523B1/ko not_active IP Right Cessation
- 1991-10-17 RU SU915001946A patent/RU2037496C1/ru active Protection Beyond IP Right Term
- 1991-10-17 HU HU913283A patent/HU213207B/hu active Protection Beyond IP Right Term
- 1991-10-17 NO NO914089A patent/NO179906C/no not_active IP Right Cessation
- 1991-10-18 FI FI914928A patent/FI109905B/fi active Protection Beyond IP Right Term
- 1991-10-18 JP JP3271121A patent/JP2994117B2/ja not_active Expired - Lifetime
- 1991-10-18 PT PT99281A patent/PT99281B/pt not_active IP Right Cessation
- 1991-10-18 CN CN91110831A patent/CN1030916C/zh not_active Expired - Lifetime
- 1991-10-18 PL PL91292101A patent/PL169403B1/pl unknown
1997
- 1997-05-12 BR BR1100846-6A patent/BR1100846A/pt active IP Right Grant
- 1997-11-17 GR GR970403039T patent/GR3025395T3/el unknown
1998
- 1998-01-19 HK HK98100422A patent/HK1001343A1/xx not_active IP Right Cessation
- 1998-06-12 CY CY9802063A patent/CY2063B1/xx unknown
2006
- 2006-08-30 LU LU91275C patent/LU91275I2/fr unknown
- 2006-09-21 NL NL300241C patent/NL300241I1/nl unknown
- 2006-12-05 NO NO2006018C patent/NO2006018I2/no unknown
- 2006-12-22 DE DE200612000069 patent/DE122006000069I2/de active Active
2014
- 2014-09-29 CY CY2006008C patent/CY2006008I2/el unknown

Also Published As

Publication number	Publication date
CA2053339C (fr)	2001-05-29
NO179906B (no)	1996-09-30
PT99281B (pt)	1999-04-30
PL169403B1 (pl)	1996-07-31
NO2006018I2 (no)	2008-10-20
CN1030916C (zh)	1996-02-07
DE122006000069I2 (de)	2012-04-19
ES2104673T3 (es)	1997-10-16
NZ240053A (en)	1993-05-26
GR3025395T3 (en)	1998-02-27
HK1001343A1 (en)	1998-06-12
DE122006000069I1 (de)	2007-05-24
HU913283D0 (en)	1992-01-28
FI914928A0 (fi)	1991-10-18
CA2053339A1 (fr)	1992-04-19
CN1061972A (zh)	1992-06-17
EP0481754A2 (fr)	1992-04-22
CY2006008I2 (el)	2016-10-05
AU8559891A (en)	1992-04-30
LU91275I2 (fr)	2007-06-16
DK0481754T3 (da)	1997-09-15
IL99755A0 (en)	1992-08-18
DE69127336D1 (de)	1997-09-25
US5206244A (en)	1993-04-27
ATE157095T1 (de)	1997-09-15
NO179906C (no)	1997-01-08
NL300241I1 (nl)	2006-12-01
BR1100846A (pt)	2000-04-18
DE69127336T2 (de)	1998-01-02
IL99755A (en)	1996-08-04
AU634423B2 (en)	1993-02-18
FI109905B (fi)	2002-10-31
PL292101A1 (en)	1992-08-10
HU213207B (en)	1997-03-28
HUT59109A (en)	1992-04-28
EP0481754A3 (en)	1992-09-16
CY2006008I1 (el)	2009-11-04
NO914089D0 (no)	1991-10-17
JPH04282373A (ja)	1992-10-07
CY2063B1 (en)	1998-06-12
FI914928A (fi)	1992-04-19
IE913451A1 (en)	1992-04-22
ZA917894B (en)	1993-03-31
PT99281A (pt)	1992-08-31
NO2006018I1 (no)	2006-12-27
NO914089L (no)	1992-04-21
RU2037496C1 (ru)	1995-06-19
JP2994117B2 (ja)	1999-12-27
KR920008043A (ko)	1992-05-27
KR0160523B1 (ko)	1998-12-01
EP0481754B1 (fr)	1997-08-20

Publication	Publication Date	Title
SG70958A1 (en)	2000-03-21	Hydroxymethyl (mrthylenecyclopentyl) purines and pyrimidines
ES2056096T3 (es)	1994-10-01	Purinil-ciclobutanos.
NZ228645A (en)	1991-09-25	1,3-dioxolane derivatives substituted in the 5th position by a purine or pyrimidine radical; treatment of viral infections
AU616839B2 (en)	1991-11-07	Purinyl and pyrimidinyl tetrahydrofurans
ZA914894B (en)	1992-04-29	Purinyl and pyrimidinyl tetrahydrofurans
EP0352013A3 (fr)	1991-11-06	Hydroxyméthyl cyclobutylepurines