| abstract |
A B S T R A C T Compounds of formula I, and pharmaceutically acceptable salts thereof, I in which R1 is hydrogen (1-6C)alkyl or (1-4C)alkanoyl; A is -N=CQ-O-, N=CQ-NR8-, -N=CQ-CH=N-or -N=CH-CQ=N-; Q is 2-furyl; R8 is hydrogen or C1-4C)alkyl; and R2 has any of the meanings given in the specification, processes for preparing the compounds and pharmaceutical compositions containing them. The compounds are useful as adenosine antagonists. |