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公开(公告)号:US06512114B1
公开(公告)日:2003-01-28
申请号:US09344280
申请日:1999-06-30
IPC分类号: C07D48712
CPC分类号: C07D487/04
摘要: The present invention provides a process for the synthesis of Midazolam I from a compound of formula II, using thermodynamic, basic workup conditions. Additional steps to isolate the pure bulk product follow.
摘要翻译: 本发明提供了一种使用热力学,碱性处理条件合成咪达唑仑的方法,式II化合物。 隔离纯散装产品的其他步骤如下。
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公开(公告)号:US5684154A
公开(公告)日:1997-11-04
申请号:US602945
申请日:1996-02-16
IPC分类号: C07D217/20 , C07D217/24
CPC分类号: C07D217/20
摘要: A process of producing atracurium besylate that substantially reduces the level of impurities in the final product and avoids the repeated use of ether is provided. In accordance with such a process, N, N'-4,10-dioxa-3,11-dioxotridecylene-1,13-bis-tetrahydropapaverine (Compound 1), methyl benzenesulfonate and a catalytic amount of an insoluble base in a solvent are combined to form a reaction mixture that is maintained for a period of time sufficient for atracurium besylate formation. The reaction mixture is then filtered to remove the insoluble base and the atracuriurn besylate is precipitated.
摘要翻译: 提供了大大降低最终产品中杂质水平并避免重复使用乙醚的苯磺酸阿曲库铵的方法。 按照这种方法,N,N'-4,10-二氧杂-3,11-二氧代二亚甲基-1,13-双 - 四氢吡哆胺(化合物1),苯磺酸甲酯和催化量的不溶碱在溶剂中是 合并形成反应混合物,该反应混合物保持足够长的苯磺酸阿卡库铵形成时间。 然后将反应混合物过滤以除去不溶性碱,并沉淀出苯甲酸阿司匹林。
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公开(公告)号:US5847212A
公开(公告)日:1998-12-08
申请号:US844587
申请日:1997-04-21
IPC分类号: C07C231/12 , C07C237/46 , C07C233/05
CPC分类号: C07C231/12
摘要: Provided is a novel process for the preparation of iohexol having reduced number of isolated intermediates and significantly reduces or eliminates the use of ion-exchange resins required to desalinate the final product.
摘要翻译: 提供了一种用于制备具有减少数量的分离的中间体的碘海醇的新方法,并显着减少或消除了使最终产物脱盐所需的离子交换树脂的使用。
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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: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: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: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: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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