Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Patent
1992-08-27
1997-07-01
Wu, Shean C.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
546133, 546137, 514380, 548241, 548243, 548247, A61K 3142, A61K 3144, C07D45302, C07D26104
Patent
active
056439237
ABSTRACT:
Compounds of formula (I): ##STR1## wherein R.sup.1 is hydrogen, halogen or alkyl; R.sup.2 is hydrogen, alkyl, optionally substituted phenyl or a heterocycle; or R.sup.1 and R.sup.2 together form a group of formula --CR.sup.4 .dbd.CR.sup.5 --CR.sup.6 .dbd.CR.sup.7 --, where R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are hydrogen, halogen, alkyl group, alkoxy, halomethyl, alkylamino, dialkylamino, hydroxy, nitro, aliphatic carboxylic acylamino or amino; and R.sup.3 is piperidyl, substituted piperidyl or quinuclidinyl. The compounds are useful in the treatment and prophylaxis of cognitive disorders, notably senile dementia, including Alzheimer's disease. Processes for preparing the compounds are also provided.
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Chemical Abstracts vol. 68, No. 11, 11 Mar. 1968, p. 4788, abstract No. 49489j, Columbus, Ohio, US; K. Bowden et al.: "Synthesis of pantherine and related compounds" & J. Chem. Soc., C 1968, No. 2, pp. 172-185.
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K. Bowden et al, "The Synthesis of Pantherine and Related Compounds", J. Chem. Soc. 1968, pp. 172-185.
Derwent Abstract of EP 458,214, 1991.
Iwata Nobuyoshi
Kobayashi Takeo
Kozuka Masao
Kubo Yoshiko
Nagano Mitsuo
Sankyo Company Limited
Wu Shean C.
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