NL7002761A - 4-hydroxy-1h-pyrazolo-(3,4-d) pyrimidine - preparation - Google Patents

4-hydroxy-1h-pyrazolo-(3,4-d) pyrimidine - preparation

Info

Publication number
NL7002761A
NL7002761A NL7002761A NL7002761A NL7002761A NL 7002761 A NL7002761 A NL 7002761A NL 7002761 A NL7002761 A NL 7002761A NL 7002761 A NL7002761 A NL 7002761A NL 7002761 A NL7002761 A NL 7002761A
Authority
NL
Netherlands
Prior art keywords
pyrazolo
pyrimidine
hydroxy
preparation
co2nh4
Prior art date
Application number
NL7002761A
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 filed Critical
Publication of NL7002761A publication Critical patent/NL7002761A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/04—Ortho-condensed systems
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D231/44—Oxygen and nitrogen or sulfur and nitrogen atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

4-Hydroxy-1H-pyrazolo- 3,4-d pyrimidine (I) is prepared by the condensation of a 3-formylamino-4-carbalkoxypyrazole, with a salt R'CO2NH4, where R' is H, carboxyl or an ammonium carboxylate residue, at 180-230 degrees for 3-6 hrs. I is a known antiarthritic.
NL7002761A 1969-02-28 1970-02-26 4-hydroxy-1h-pyrazolo-(3,4-d) pyrimidine - preparation NL7002761A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUEE001630 1969-02-28

Publications (1)

Publication Number Publication Date
NL7002761A true NL7002761A (en) 1970-09-01

Family

ID=10995293

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7002761A NL7002761A (en) 1969-02-28 1970-02-26 4-hydroxy-1h-pyrazolo-(3,4-d) pyrimidine - preparation

Country Status (3)

Country Link
AT (1) AT299209B (en)
DK (1) DK131938C (en)
NL (1) NL7002761A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2538077A1 (en) * 1975-08-27 1977-03-03 Tad Pharm Werk (4)-hydroxy-pyrazolo-(3,4-d)-pyrimidine prodn. - by reacting (4)-ethoxycarbonyl-(3)-amino-pyrazole with ortho:formates and then with ammonia generated in situ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2538077A1 (en) * 1975-08-27 1977-03-03 Tad Pharm Werk (4)-hydroxy-pyrazolo-(3,4-d)-pyrimidine prodn. - by reacting (4)-ethoxycarbonyl-(3)-amino-pyrazole with ortho:formates and then with ammonia generated in situ

Also Published As

Publication number Publication date
DK131938C (en) 1976-03-01
DK131938B (en) 1975-09-29
AT299209B (en) 1972-06-12

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