http://www.w3.org/ns/prov#value | - tidyl Peptidase-IV inhibitor to be applied in the present invention is a compound of formula I [0100] wherein A may be attached at either N1 or at N2 to the purine system and each n and m is one or two independently [0101] R1 is aryl optionally substituted with one or more R2 independently or heteroaryl optionally substituted with one or more R2 independently; [0102] R2 is H; C-C7 alkyl; C2-C7 alk
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