8-substituted anthines as phosphodiesterase inhibitors

Details 8-substituted anthines as phosphodiesterase inhibitors 8-substituted anthines as phosphodiesterase inhibitors

C - Chemistry, Metallurgy

07

D

C07D 473/04 (2006.01) A61K 31/52 (2006.01) C07D 473/06 (2006.01)

Patent

CA 2136196

2136196 9323401 PCTABS00028 A compound of formula (I) or if appropriate a pharmaceutically acceptable salt thereof, wherein R1 and R2 each independently represent a moiety of formula (a): -(CH2)m-A wherein m represents zero or an integer 1, 2 or 3 and A represents a substituted or unsubstituted cyclic hydrocarbon radical; R3 represents hydrogen, substituted or unsubstituted alkyl or an aralkyl group substituted or unsubstituted in the aryl moiety; and R4 represents hydrogen, alkyl or alkylcarbonyl; a process for preparing such a compound, a pharmaceutical composition containing such a compound and the use of such a compound in medicine.

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