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公开(公告)号:US5705692A
公开(公告)日:1998-01-06
申请号:US721431
申请日:1996-09-27
IPC分类号: C07C213/02 , C07C231/02 , C07C231/08 , C07C231/12 , C07C231/14
CPC分类号: C07C213/02
摘要: Provided is a novel process for the preparation of iohexol having improved yields and purity, reduced number of isolated intermediates, and significantly reduced volume of ion-exchange resins required to desalinate the final product.
摘要翻译: 提供了一种制备具有提高的产率和纯度,减少分离的中间体数量和显着减少脱盐最终产物所需的离子交换树脂的体积的新型方法。
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公开(公告)号:US06803485B2
公开(公告)日:2004-10-12
申请号:US09257690
申请日:1999-02-26
申请人: Richard A. Lorenzini , Ashok V. Bhatia , Steven A. Chamberlin , Keith A. Drengler , John J. Hufnagel , Xiu C. Wang
发明人: Richard A. Lorenzini , Ashok V. Bhatia , Steven A. Chamberlin , Keith A. Drengler , John J. Hufnagel , Xiu C. Wang
IPC分类号: C07C23305
CPC分类号: C07C231/12 , C07C237/46
摘要: The present invention discloses a process for the preparation of pure non-ionic contrast agents. The invention also includes a method for purifying the non-ionic contrast agents.
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公开(公告)号:US5942633A
公开(公告)日:1999-08-24
申请号:US667038
申请日:1996-06-19
申请人: Xiu C. Wang , Luping Liu , Ashok V. Bhatia
发明人: Xiu C. Wang , Luping Liu , Ashok V. Bhatia
IPC分类号: C07C213/04 , C07D301/00 , C07D303/22 , C07D303/24 , C07D303/18 , C07D93/06
CPC分类号: C07D301/00 , C07C213/04 , C07D303/24
摘要: The present invention relates to a process for the selective alkylation of intermediates of betaxolol.
摘要翻译: 本发明涉及一种选择性烷基化倍他洛尔中间体的方法。
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公开(公告)号:US06875887B2
公开(公告)日:2005-04-05
申请号:US10869519
申请日:2004-06-16
申请人: Richard A. Lorenzini , Ashok V. Bhatia , Steven A. Chamberlin , Keith A. Drengler , John J. Hufnagel , Xiu C. Wang
发明人: Richard A. Lorenzini , Ashok V. Bhatia , Steven A. Chamberlin , Keith A. Drengler , John J. Hufnagel , Xiu C. Wang
IPC分类号: C07C231/12 , C07C237/46 , C07C69/34
CPC分类号: C07C231/12 , C07C237/46
摘要: A compound and salts and enantiomers thereof, having the formula: wherein R7 is an acyl group.
摘要翻译: 具有下式的化合物及其盐和对映异构体:其中R7是酰基。
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公开(公告)号:US07282607B2
公开(公告)日:2007-10-16
申请号:US11464981
申请日:2006-08-16
申请人: Richard A. Lorenzini , Ashok V. Bhatia , Steven A. Chamberlin , Keith A. Drengler , John J. Hufnagel , Xiu C. Wang
发明人: Richard A. Lorenzini , Ashok V. Bhatia , Steven A. Chamberlin , Keith A. Drengler , John J. Hufnagel , Xiu C. Wang
IPC分类号: C07C233/05
CPC分类号: C07C231/12 , C07C237/46
摘要: The present invention discloses a process for the preparation of pure non-ionic contrast agents. The invention also includes a method for purifying the non-ionic contrast agents.
摘要翻译: 本发明公开了一种制备纯非离子造影剂的方法。 本发明还包括纯化非离子造影剂的方法。
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公开(公告)号:US5731463A
公开(公告)日:1998-03-24
申请号:US717381
申请日:1996-09-23
申请人: Xiu C. Wang , Ashok V. Bhatia , Steven Chamberlin , Luping Liu
发明人: Xiu C. Wang , Ashok V. Bhatia , Steven Chamberlin , Luping Liu
IPC分类号: C07C213/04 , C07C41/16 , C07C43/178 , C07C213/06 , C07C217/32 , C07C217/34 , C07C209/02
CPC分类号: C07C41/16 , C07C213/06 , C07D303/23 , C07C2101/02
摘要: The present invention relates to a process for the selective alkylation of intermediates of betaxolol.
摘要翻译: 本发明涉及一种选择性烷基化倍他洛尔中间体的方法。
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公开(公告)号:US07115778B2
公开(公告)日:2006-10-03
申请号:US11064779
申请日:2005-02-24
申请人: Richard A. Lorenzini , Ashok V. Bhatia , Steven A. Chamberlin , Keith A. Drengler , John J. Hufnagel , Xiu C. Wang
发明人: Richard A. Lorenzini , Ashok V. Bhatia , Steven A. Chamberlin , Keith A. Drengler , John J. Hufnagel , Xiu C. Wang
IPC分类号: C07C233/05
CPC分类号: C07C231/12 , C07C237/46
摘要: The present invention discloses a process for the preparation of pure non-ionic contrast agents. The invention also includes a method for purifying the non-ionic contrast agents.
摘要翻译: 本发明公开了一种制备纯非离子造影剂的方法。 本发明还包括纯化非离子造影剂的方法。
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公开(公告)号:US6124485A
公开(公告)日:2000-09-26
申请号:US47700
申请日:1998-03-25
申请人: Xiu C. Wang , Ashok V. Bhatia , Azad Hossain , Timothy B. Towne
发明人: Xiu C. Wang , Ashok V. Bhatia , Azad Hossain , Timothy B. Towne
IPC分类号: C07B61/00 , C07C51/353 , C07C403/20 , C11C3/00
CPC分类号: C07C403/20 , C07B2200/09 , C07C2101/16
摘要: The process of the present invention relates to a process for producing 1 3-cis retinoic acid. The process of the present invention involves reacting a Wittig salt in a solvent with a butenolide in the presence of a weak base and a Lewis acid.
摘要翻译: 本发明的方法涉及一种生产13-顺式视黄酸的方法。 本发明的方法包括在弱碱和路易斯酸的存在下使Wittig盐在溶剂中与丁烯内酯反应。
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公开(公告)号:US07834043B2
公开(公告)日:2010-11-16
申请号:US11008713
申请日:2004-12-09
申请人: David A. DeGoey , Charles A. Flentge , William J. Flosi , David J. Grampovnik , Dale J. Kempf , Larry L. Klein , Ming C. Yeung , John T. Randolph , Xiu C. Wang , Su Yu
发明人: David A. DeGoey , Charles A. Flentge , William J. Flosi , David J. Grampovnik , Dale J. Kempf , Larry L. Klein , Ming C. Yeung , John T. Randolph , Xiu C. Wang , Su Yu
IPC分类号: A01N43/50
CPC分类号: C07D213/56 , A61K31/426 , A61K31/4418 , A61K31/443 , A61K31/444 , A61K45/06 , C07C311/16 , C07D213/38 , C07D213/85 , C07D231/08 , C07D239/22 , C07D277/06 , C07D277/30 , C07D307/16 , C07D307/20 , C07D401/06 , C07D401/12 , C07D401/14 , C07D405/06 , C07D405/12 , C07D407/12 , C07D417/04 , C07D417/06 , C07D417/12 , C07D417/14 , C07D451/02 , C07D471/04 , C07D471/10 , C07D493/04 , C07F9/58 , C07F9/65515 , C07F9/65583 , C07K5/0207
摘要: A compound of the formula is disclosed as an HIV protease inhibitor. Methods and compositions for inhibiting an HIV infection are also disclosed.
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公开(公告)号:US5637765A
公开(公告)日:1997-06-10
申请号:US462235
申请日:1995-06-05
申请人: Xiu C. Wang , Panos Kalaritis , Michelle L. Chang
发明人: Xiu C. Wang , Panos Kalaritis , Michelle L. Chang
IPC分类号: C07C51/363 , C07C205/12 , C07C205/45 , C07C205/56 , C07C205/58 , C07C255/35 , C07C205/00
CPC分类号: C07C255/35 , C07C205/12 , C07C205/45 , C07C205/56 , C07C205/58 , C07C51/363
摘要: A process for the preparation of 2-chloro-4,5-difluorobenzoic acid and 2,4,5-trifluorobenzoic acid as well as synthetic intermediates useful in and prepared according thereto, comprising reacting a nitrobenzene having the formula ##STR1## wherein X is chloro or fluoro, with an appropriate carbanion to form a compound having the formula ##STR2## wherein one of Y and Z is chloro and the other is nitro, and R is a radical selected from the group consisting of --CCl.sub.3, --CH.sub.2 NO.sub.2, --CH(NO.sub.2)R.sup.1, --CH(CO.sub.2 R.sup.1).sub.2, --CH(C(O)R.sup.2).sub.2, --CH(CN)CO.sub.2 R.sup.1, --CH(CO.sub.2 R.sup.1)COR.sup.2 and --COR.sup.2 where R.sup.1 is alkyl or arylalkyl and R.sup.2 is alkyl, aryl or arylalkyl and, where appearing more than once in such a radical, R.sup.1 and R.sup.2 may be the same or different at each occurrence.
摘要翻译: 一种制备2-氯-4,5-二氟苯甲酸和2,4,5-三氟苯甲酸的方法,以及可用于和制备的合成中间体,包括使具有下式的硝基苯:其中X为 氯或氟,与适当的碳负离子形成具有下式的化合物:硝基,R是选自-CCl 3,-CH 2 NO 2,-CH(NO 2)R 1,-CH(CO 2 R 1) 2,-CH(C(O)R 2)2,-CH(CN)CO 2 R 1,-CH(CO 2 R 1)COR 2和-COR 2,其中R 1是烷基或芳基烷基,R 2是烷基,芳基或芳烷基,并且其中出现多于一次 在这样的基团中,R 1和R 2可以在每次出现时相同或不同。
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