The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 1976
Filed:
Mar. 27, 1974
Gwynn Pennant Ellis, Cardiff, WA;
Ian Collins, London, EN;
David Martin Waters, London, EN;
David Edmund Bays, London, EN;
Allen & Hanburys Limited, London, EN;
Abstract
Compounds of the general formulae I and II and pharmaceutically acceptable salts thereof: ##SPC1## In which: R.sub.1 represents a hydrogen atom, a halogen atom, an alkenyl or alkyl group; or a group OR.sub.3 or NR.sub.3 R.sub.4 where R.sub.3 and R.sub.4 which may be the same or different and may represent a hydrogen atom, or an alkenyl group, or an alkyl group which alkyl group may optionally be substituted by one or more hydroxy, alkoxy, acyloxy, aryl, amino, alkylamino, dialkylamino, diaralkylamino or alkylaralkylamino groups; or R.sub.3 and R.sub.4 together with the nitrogen atom form a 5 or 6 membered heterocyclic ring that may optionally contain other hetero atoms. R.sub.2 has the same meanings as R.sub.3. The compounds have utility for the treatment of conditions in which combination of an antigen with a reaginic antibody is primarily responsible.