ES253914A1 - 2, 4-diaminoquinazolines and their preparation - Google Patents
2, 4-diaminoquinazolines and their preparationInfo
- Publication number
- ES253914A1 ES253914A1 ES0253914A ES253914A ES253914A1 ES 253914 A1 ES253914 A1 ES 253914A1 ES 0253914 A ES0253914 A ES 0253914A ES 253914 A ES253914 A ES 253914A ES 253914 A1 ES253914 A1 ES 253914A1
- Authority
- ES
- Spain
- Prior art keywords
- amino
- quinazolines
- diamino
- methyl
- lower alkyl
- 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
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/70—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings condensed with carbocyclic rings or ring systems
- C07D239/72—Quinazolines; Hydrogenated quinazolines
- C07D239/95—Quinazolines; Hydrogenated quinazolines with hetero atoms directly attached in positions 2 and 4
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
The invention comprises the following 2,4-diamino-R-quinazolines where R is 5,6-trimethylene, 5-methyl, 6-n-propyl, 6-n-butyl, 5,6-tetramethyl and 5-ethyl and the preparation of 2,4-diaminoquinazolines of the general formula <FORM:0935381/IV(a)/1> wherein R1 is a lower alkyl group and R2 is a hydrogen atom or a lower alkyl group and R1 may be a hydrogen atom when R2 is a lower alkyl group, R1 and R2 together having not more than 10 carbon atoms, or R1 and R2 together form an alkylene chain having 3 or 4 carbon atoms, by reacting an anthranilonitrile of the formula <FORM:0935381/IV(a)/2> with dicyandiamide, and pharmaceutical compositions containing the specified 2,4-diamino-R-quinazolines (see Group VI). 2-Amino-5-ethylebenzonitrile is prepared by decomposition of 5-ethylisatin b -oxime. Similarly are prepared 2-amino-6-methyl-benzonitrile, 2-amino-5-n-propylbenzonitrile, 2-amino-5-n-butylbenzonitrile, 2-amino-5,6,7, 8-tetrahydro-1-naphthonitrile and 2-amino-6-ethylbenzonitrile. 5-Amino-4-cyanoindane is prepared by reacting 5-acetylamino-4-bromoindane with cuprous cyanide to give 5-acetylamino-4-cyano-indane and removing the acetyl group by hydrolysis.ALSO:Antibacterial compositions contain 2,4-diamino-R-quinazolines, wherein R is 5,6-trimethylene, 5-methyl, 6-n-propyl, 6-n-butyl, 5,6-tetramethyl and 5-ethyl, together with a pharmaceutically acceptable carrier. The compositions may also contain antibiotics and/or antibacterials. The compositions may be presented as capsules or cachets containing fine powders or granules of the compounds in the dry state or in a non-aqueous suspension, in tablets, dragees, as solutions, suspensions or emulsions for oral administration as aqueous solutions for injection as suppositories or pessaries as ointments, creams or solutions for topical use.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78022058A | 1958-12-15 | 1958-12-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES253914A1 true ES253914A1 (en) | 1960-05-01 |
Family
ID=25118979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES0253914A Expired ES253914A1 (en) | 1958-12-15 | 1959-12-03 | 2, 4-diaminoquinazolines and their preparation |
Country Status (5)
Country | Link |
---|---|
CH (1) | CH389628A (en) |
DE (1) | DE1125939B (en) |
ES (1) | ES253914A1 (en) |
FR (1) | FR605M (en) |
GB (1) | GB935381A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1045180A (en) * | 1963-09-20 | 1966-10-12 | Parke Davis & Co | Quinazoline derivatives |
JP2007500683A (en) * | 2003-07-25 | 2007-01-18 | チバ スペシャルティ ケミカルズ ホールディング インコーポレーテッド | Use of substituted 2,4-bis (alkylamino) pyrimidines or -quinazolines as antibacterial agents |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE737931C (en) * | 1940-07-10 | 1943-07-29 | Ig Farbenindustrie Ag | Process for the preparation of 2,4-diaminochinazoline |
-
1959
- 1959-11-20 GB GB39469/59A patent/GB935381A/en not_active Expired
- 1959-11-27 CH CH8118059A patent/CH389628A/en unknown
- 1959-12-03 ES ES0253914A patent/ES253914A1/en not_active Expired
- 1959-12-12 DE DEW26879A patent/DE1125939B/en active Pending
-
1960
- 1960-08-31 FR FR837354A patent/FR605M/fr active Active
Also Published As
Publication number | Publication date |
---|---|
GB935381A (en) | 1963-08-28 |
CH389628A (en) | 1965-03-31 |
FR605M (en) | 1961-06-19 |
DE1125939B (en) | 1962-03-22 |
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