Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-05-31
2005-05-31
Balasubramanian, Venkataraman (Department: 1624)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Heterocyclic carbon compounds containing a hetero ring...
C544S234000, C544S111000, C514S233200
Reexamination Certificate
active
06900209
ABSTRACT:
The present invention provides a compound of formula (I) wherein A is an optionally substituted C1-4alkylidene group or a bond, R20and R21are hydrogen, alkyl groups or heterocyclic groups, R1and R2are small substituents or hydrogen, L is O, S or substituted N, X is a 5- or 6-membered heteroaromatic ring, Y is C1-4alkylidene and Z is a 5- or 6-membered heteroaromatic ring; or a pharmaceutically acceptable salt thereof; pharmaceutical compositions comprising it; its use in therapy; its use in making medicaments for treating neurodegenerative disease and methods of using it to enhance cognition.
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Chambers Mark Stuart
Jones Philip
MacLeod Angus Murray
Maxey Robert James
Szekeres Helen Jane
Balasubramanian Venkataraman
Merck sharp & Dohme Ltd.
Todaro John C.
Winokur Melvin
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