-
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。
-
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。
-
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。
-
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。
-
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。
-
公开(公告)号:US5932774A
公开(公告)日:1999-08-03
申请号:US539424
申请日:1995-11-06
IPC分类号: C07C29/09 , C07C35/16 , C07C69/013
CPC分类号: C07C69/013 , C07C29/095 , C07C35/16 , C07C2101/14
摘要: A method for the preparation of D-chiro-inositol from kasugamycin, comprising the steps of: (a) reacting kasugamycin with an acetylating agent to form a crude hexa-acetate intermediate; (b) purifying the crude intermediate to form purified hexa-acetate intermediate; (c) deacetylating the purified intermediate to form D-chiro-inositol; and (d) isolating the D-chiro-inositol. The method permits efficient, large-scale preparation of D-chiro-inositol without the need for extensive chromatographic purification of the final D-chiro-inositol product.
摘要翻译: 一种从春雷霉素制备D-手性肌醇的方法,包括以下步骤:(a)使春日霉素与乙酰化试剂反应形成六醋酸中间体中间体; (b)纯化粗中间体以形成纯化的六醋酸酯中间体; (c)将纯化的中间体脱乙酰以形成D-手性肌醇; 和(d)分离D-手性肌醇。 该方法可有效,大规模地制备D-手性肌醇,而不需要对最终D-手性肌醇产品进行广泛的色谱纯化。
-
公开(公告)号:US5905134A
公开(公告)日:1999-05-18
申请号:US832840
申请日:1997-04-04
CPC分类号: C08G67/04
摘要: Polymers can be prepared in solution by continuously distilling solvent from a solution of diacid prepolymers.
摘要翻译: 聚合物可以通过从二酸预聚物的溶液中连续蒸馏溶剂而在溶液中制备。
-
公开(公告)号:US5463142A
公开(公告)日:1995-10-31
申请号:US337656
申请日:1994-11-10
IPC分类号: C07C29/09 , C07C35/16 , C07C69/013
CPC分类号: C07C29/09 , C07C35/16 , C07C69/013 , C07B2200/07 , C07C2101/14
摘要: A method for the preparation of D-chiro-inositol from kasugamycin, comprising the steps of:(a) reacting kasugamycin with an acetylating agent to form a crude hexa-acetate intermediate;(b) purifying the crude intermediate to form purified hexa-acetate intermediate;(c) deacetylating the purified intermediate to form D-chiro-inositol; and(d) isolating the D-chiro-inositol.The method permits efficient, large-scale preparation of D-chiro-inositol without the need for extensive chromatographic purification of the final D-chiro-inositol product.
摘要翻译: 一种从春雷霉素制备D-手性肌醇的方法,包括以下步骤:(a)使春日霉素与乙酰化试剂反应形成六醋酸中间体中间体; (b)纯化粗中间体以形成纯化的六醋酸酯中间体; (c)将纯化的中间体脱乙酰以形成D-手性肌醇; 和(d)分离D-手性肌醇。 该方法可有效,大规模地制备D-手性肌醇,而不需要对最终D-手性肌醇产品进行广泛的色谱纯化。
-
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。
-
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。
-
-
-
-
-
-
-
-
-