Purine derivatives

Details Purine derivatives Purine derivatives

C - Chemistry, Metallurgy

07

H

C07H 19/167 (2006.01) A61K 31/70 (2006.01) C07H 19/16 (2006.01)

Patent

CA 2113547

2113547 9323418 PCTABS00028 A compound of formula (I), or a pharmaceutically acceptable salt thereof, wherein X is hydrogen, amino, halogen, hydroxy, lower alkoxy or lower alkyl and R1 is (a) wherein Y is methylene or a valence bond, R2 and R5 are H or lower, straight or branched alkyl, R3 is H or lower alkyl, or R2 and R3 can together form a cyclobutyl, cyclopentyl, cyclohexyl or phenyl ring, Z is oxygen, methylene, sulphur, sulphonyl or a valence bond, R4 is H, lower alkyl, aralkyl, a mono or bicyclic aromatic system optionally substituted with various groups. The compounds have been found useful for treating central nervous system ailments.

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