FR2244521A1 - - Google Patents
Info
- Publication number
- FR2244521A1 FR2244521A1 FR7432267A FR7432267A FR2244521A1 FR 2244521 A1 FR2244521 A1 FR 2244521A1 FR 7432267 A FR7432267 A FR 7432267A FR 7432267 A FR7432267 A FR 7432267A FR 2244521 A1 FR2244521 A1 FR 2244521A1
- Authority
- FR
- France
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
- C07D473/02—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
- C07D473/04—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms
- C07D473/06—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3
- C07D473/12—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3 with methyl radicals in positions 1, 3, and 7, e.g. caffeine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Pyridine Compounds (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2940673 | 1973-09-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2244521A1 true FR2244521A1 (fr) | 1975-04-18 |
FR2244521B1 FR2244521B1 (fr) | 1978-07-28 |
Family
ID=11226917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7432267A Expired FR2244521B1 (fr) | 1973-09-26 | 1974-09-25 |
Country Status (5)
Country | Link |
---|---|
US (1) | US3975389A (fr) |
JP (1) | JPS5059389A (fr) |
DE (1) | DE2445399A1 (fr) |
FR (1) | FR2244521B1 (fr) |
GB (1) | GB1428868A (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3113880A1 (de) * | 1981-04-07 | 1982-10-21 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von coffein |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2879271A (en) * | 1953-07-23 | 1959-03-24 | Knoll Ag | Basic derivatives of mono- and dimethyl xanthines, and a process of making same |
-
1974
- 1974-09-23 DE DE19742445399 patent/DE2445399A1/de not_active Withdrawn
- 1974-09-23 GB GB4126174A patent/GB1428868A/en not_active Expired
- 1974-09-23 US US05/508,571 patent/US3975389A/en not_active Expired - Lifetime
- 1974-09-24 JP JP49109896A patent/JPS5059389A/ja active Pending
- 1974-09-25 FR FR7432267A patent/FR2244521B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2244521B1 (fr) | 1978-07-28 |
GB1428868A (en) | 1976-03-17 |
DE2445399A1 (de) | 1975-03-27 |
JPS5059389A (fr) | 1975-05-22 |
US3975389A (en) | 1976-08-17 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |