DE3325853C2 - - Google Patents
Info
- Publication number
- DE3325853C2 DE3325853C2 DE19833325853 DE3325853A DE3325853C2 DE 3325853 C2 DE3325853 C2 DE 3325853C2 DE 19833325853 DE19833325853 DE 19833325853 DE 3325853 A DE3325853 A DE 3325853A DE 3325853 C2 DE3325853 C2 DE 3325853C2
- Authority
- DE
- Germany
- Prior art keywords
- pyrazole
- formamide
- allopurinol
- ammonia
- synthesis
- 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.)
- Expired
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Plural Heterocyclic Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH151883A CH654009A5 (de) | 1983-03-21 | 1983-03-21 | Verfahren zur herstellung von allopurinol. |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3325853A1 DE3325853A1 (de) | 1984-09-27 |
DE3325853C2 true DE3325853C2 (fr) | 1989-06-01 |
Family
ID=4212313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19833325853 Granted DE3325853A1 (de) | 1983-03-21 | 1983-07-18 | Verfahren zur herstellung von allopurinol |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH654009A5 (fr) |
DE (1) | DE3325853A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102219787B (zh) * | 2011-05-17 | 2013-06-05 | 重庆万利康制药有限公司 | 一种4-羟基吡唑并[3,4-d]嘧啶的合成方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2868803A (en) * | 1956-02-10 | 1959-01-13 | Ciba Pharm Prod Inc | New pyrazoles and method of preparing same |
GB854632A (en) * | 1956-02-10 | 1960-11-23 | Ciba Ltd | Manufacture of pyrazoles |
GB1252435A (fr) * | 1968-02-02 | 1971-11-03 |
-
1983
- 1983-03-21 CH CH151883A patent/CH654009A5/de not_active IP Right Cessation
- 1983-07-18 DE DE19833325853 patent/DE3325853A1/de active Granted
Also Published As
Publication number | Publication date |
---|---|
DE3325853A1 (de) | 1984-09-27 |
CH654009A5 (de) | 1986-01-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8363 | Opposition against the patent | ||
8331 | Complete revocation |