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:
Jul. 30, 1996
Filed:
Jan. 06, 1995
Beecham Group p.l.c., Easom, GB;
Abstract
Novel compounds of formula (I), processes for their preparation, and their use as pharmaceutical agents are described: ##STR1## in which p represents an integer of 2 to 4; r represents an integer of 1 or 2; s represents 0 or 1; and X represents a group ##STR2## in which A.sub.1 is oxygen or sulphur, one of A.sub.2 and A.sub.3 is CR.sub.1 and the other is nitrogen or CR.sub.2, or A.sub.2 is oxygen or sulphur, A.sub.1 is CH and A.sub.3 is CR.sub.1, where R.sub.1 and R.sub.2 are independently selected from hydrogen and C.sub.1-2 alkyl, with the proviso that when r is 2, R.sub.1 and R.sub.2 are hydrogen or methyl. The novel compounds of this invention may be used to treat or to prevent dementia in mammals.