CA2551791A1 - Stable polymorphs of (e)-n,n-diethyl-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl)acrylamide - Google Patents

Stable polymorphs of (e)-n,n-diethyl-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl)acrylamide Download PDF

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Publication number
CA2551791A1
CA2551791A1 CA002551791A CA2551791A CA2551791A1 CA 2551791 A1 CA2551791 A1 CA 2551791A1 CA 002551791 A CA002551791 A CA 002551791A CA 2551791 A CA2551791 A CA 2551791A CA 2551791 A1 CA2551791 A1 CA 2551791A1
Authority
CA
Canada
Prior art keywords
dihydroxy
cyano
diethyl
nitrophenyl
acrylamide
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
CA002551791A
Other languages
English (en)
French (fr)
Inventor
Siddiqui Mohammed Jaweed Mukarram
Rashid Abdul Rehman Khan
Ram Prasad Yadav
Zakir Gafoor Shaikh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wockhardt Ltd
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2551791A1 publication Critical patent/CA2551791A1/en
Abandoned legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00Carboxylic acid nitriles
    • C07C255/01Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms
    • C07C255/32Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring
    • C07C255/41Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring the carbon skeleton being further substituted by carboxyl groups, other than cyano groups
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07BGENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B2200/00Indexing scheme relating to specific properties of organic compounds
    • C07B2200/13Crystalline forms, e.g. polymorphs

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
CA002551791A 2003-12-29 2003-12-29 Stable polymorphs of (e)-n,n-diethyl-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl)acrylamide Abandoned CA2551791A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2003/006200 WO2005066117A1 (en) 2003-12-29 2003-12-29 Stable polymorphs of (e)-n,n-diethyl-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl)acrylamide

Publications (1)

Publication Number Publication Date
CA2551791A1 true CA2551791A1 (en) 2005-07-21

Family

ID=34746624

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002551791A Abandoned CA2551791A1 (en) 2003-12-29 2003-12-29 Stable polymorphs of (e)-n,n-diethyl-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl)acrylamide

Country Status (5)

Country Link
EP (1) EP1701937A4 (de)
AU (1) AU2003292465A1 (de)
BR (1) BR0318690A (de)
CA (1) CA2551791A1 (de)
WO (1) WO2005066117A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602005017204D1 (de) * 2005-11-09 2009-11-26 Usv Ltd Verfahren zur herstellung von hochreinem (e)-n,n-diethyl-2-cyano-3-(3,4-dihydro-5-nitrophenyl)acrylamid (entacapon)
WO2007077572A1 (en) * 2006-01-02 2007-07-12 Actavis Group Ptc Ehf A process for the preparation of entacapone form-a
ES2382896T3 (es) * 2006-02-06 2012-06-14 Orion Corporation Proceso para la fabricación de entacapona
GB0610207D0 (en) * 2006-05-23 2006-07-05 Pliva Istrazivanje I Razvoj D New forms of active pharmaceutical ingredient
WO2008023380A1 (en) * 2006-08-24 2008-02-28 Srinivasa Reddy Battula Improved and simplified procedure for the preparation of (e) n,n-diethyl-2-cyano-3(3,4-dihydroxy-5-nitrophenyl)acrylamide
ES2306587B1 (es) * 2006-11-15 2009-08-07 Quimica Sintetica, S.A. Nueva forma cristalina de entacapona y procedimiento para su obtencion.
ES2319024B1 (es) * 2007-02-13 2009-12-11 Quimica Sintetica, S.A. Procedimiento para la obtencion de entacapona sustancialmente libre de isomero z, sus intermedios de sintesis y nueva forma cristalina.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
YU213587A (en) * 1986-11-28 1989-06-30 Orion Yhtymae Oy Process for obtaining new pharmacologic active cateholic derivatives
GB2238047B (en) * 1989-11-03 1993-02-10 Orion Yhtymae Oy Stable polymorphic form of (e)-n,n-diethyl-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl)acrylamide and the process for its preparation

Also Published As

Publication number Publication date
EP1701937A4 (de) 2007-05-02
WO2005066117A1 (en) 2005-07-21
BR0318690A (pt) 2006-12-26
EP1701937A1 (de) 2006-09-20
AU2003292465A1 (en) 2005-08-12

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