ES253914A1 - 2, 4-diaminoquinazolines and their preparation - Google Patents

2, 4-diaminoquinazolines and their preparation

Info

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
Application number
ES0253914A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wellcome Foundation Ltd
Original Assignee
Wellcome Foundation Ltd
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 Wellcome Foundation Ltd filed Critical Wellcome Foundation Ltd
Publication of ES253914A1 publication Critical patent/ES253914A1/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D239/00Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
    • C07D239/70Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings condensed with carbocyclic rings or ring systems
    • C07D239/72Quinazolines; Hydrogenated quinazolines
    • C07D239/95Quinazolines; 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.
ES0253914A 1958-12-15 1959-12-03 2, 4-diaminoquinazolines and their preparation Expired ES253914A1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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