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DOP2001000186A - NEW PROCEDURE FOR THE PREPARATION OF PIRAZOLOPIRIMIDINONAS - Google Patents

NEW PROCEDURE FOR THE PREPARATION OF PIRAZOLOPIRIMIDINONAS

Info

Publication number
DOP2001000186A
DOP2001000186A DO2001000186A DO2001000186A DOP2001000186A DO P2001000186 A DOP2001000186 A DO P2001000186A DO 2001000186 A DO2001000186 A DO 2001000186A DO 2001000186 A DO2001000186 A DO 2001000186A DO P2001000186 A DOP2001000186 A DO P2001000186A
Authority
DO
Dominican Republic
Prior art keywords
pirazolopirimidinonas
preparation
new procedure
compound
general formula
Prior art date
Application number
DO2001000186A
Other languages
Spanish (es)
Inventor
Hilip Mark Edward Bunnage
Philip Charles Levett
Nicholas Murray Thomson
Original Assignee
Pfizer
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 Pfizer filed Critical Pfizer
Publication of DOP2001000186A publication Critical patent/DOP2001000186A/en

Links

Landscapes

  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

Se proporciona un procedimiento para la producción de Un compuesto de fórmula general I: En la que A, R1, R2, R3 y R4 tienen los significados proporcionados en la descripción, procedimiento que comprende la deshidrogenación de un compuesto de fórmula general 11,A process is provided for the production of A compound of general formula I: In which A, R1, R2, R3 and R4 have the meanings provided in the description, a process comprising the dehydrogenation of a compound of general formula 11,

DO2001000186A 2000-06-22 2001-06-06 NEW PROCEDURE FOR THE PREPARATION OF PIRAZOLOPIRIMIDINONAS DOP2001000186A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0015462A GB0015462D0 (en) 2000-06-22 2000-06-22 Novel process for the preparation of pyrazolopyrimidinones

Publications (1)

Publication Number Publication Date
DOP2001000186A true DOP2001000186A (en) 2002-08-30

Family

ID=9894299

Family Applications (1)

Application Number Title Priority Date Filing Date
DO2001000186A DOP2001000186A (en) 2000-06-22 2001-06-06 NEW PROCEDURE FOR THE PREPARATION OF PIRAZOLOPIRIMIDINONAS

Country Status (4)

Country Link
CN (1) CN1308328C (en)
DO (1) DOP2001000186A (en)
GB (1) GB0015462D0 (en)
ZA (1) ZA200210276B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107814797B (en) * 2016-09-13 2020-03-06 上海医药工业研究院 The recovery preparation method of racemic praziquantel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9013750D0 (en) * 1990-06-20 1990-08-08 Pfizer Ltd Therapeutic agents
GB9612514D0 (en) * 1996-06-14 1996-08-14 Pfizer Ltd Novel process
US6087368A (en) * 1998-06-08 2000-07-11 Bristol-Myers Squibb Company Quinazolinone inhibitors of cGMP phosphodiesterase
ATE250063T1 (en) * 1998-10-23 2003-10-15 Pfizer PYRAZOLOPYRIMIDINONE, CGMP PDE5 INHIBITORS, FOR THE TREATMENT OF SEXUAL DISORDERS

Also Published As

Publication number Publication date
GB0015462D0 (en) 2000-08-16
ZA200210276B (en) 2003-12-19
CN1308328C (en) 2007-04-04
CN1692114A (en) 2005-11-02

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