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:
Feb. 12, 1980
Filed:
Oct. 26, 1978
Simon F Campbell, Deal, GB;
John C Danilewicz, Ash, Nr. Canterbury, GB;
Allan L Ham, Broadstairs, GB;
John K Stubbs, Deal, GB;
Pfizer Inc., New York, NY (US);
Abstract
6,7-Dialkoxy-4-[4-(substituted)piperidino]quinazolines wherein the 4-substituent is -(CHR.sup.1).sub.m -Z wherein R.sup.1 is hydrogen or lower alkyl; m is 1 or 2, with the proviso that when m is 2, each R.sup.1 can be the same or different; Z is -N(R.sup.2)COR.sup.3, -OCONR.sup.4 R.sup.5, N(R.sup.2)SO.sub.2 R.sup.3 or -N(R.sup.2)CONR.sup.4 R.sup.5 wherein R.sup.2 is hydrogen or lower alkyl; R.sup.3 is lower alkyl, benzyl or phenyl; and each of R.sup.4 and R.sup.5 is hydrogen or is selected from group R.sup.3 ; and methods for their preparation. The compounds are phosphodiesterase inhibitors and cardiac stimulants.