Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2011-04-12
2011-04-12
Anderson, Rebecca L (Department: 1626)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C514S266230, C514S301000, C514S367000, C544S279000, C546S272700, C548S161000
Reexamination Certificate
active
07923450
ABSTRACT:
The invention relates to compounds of formulawherein R1, R2, R3, R4, X and Y are as defined herein and to pharmaceutically active acid addition salts thereof. The compounds can be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica or Down syndrome.
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Baumann Karlheinz
Flohr Alexander
Goetschi Erwin
Jacobsen Helmut
Jolidon Synese
Anderson Rebecca L
Hoffmann-La Roche Inc.
Johnston George W.
Otton Alicia L
Prior Kimberly J.
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