1. Biotransformation pathways of the cyclin-dependent kinase inhibitor 6-benzylamino-2-(3- hydroxypropylamino)-9-isopropylpurine (bohemine) by mouse liver microsomes in vitro were investigated. 2. Metabolite profiles of [8-3H]-labelled bohemine were established by TLC/3H-autoradiography and enzymatic and MS analyses were used to elucidate the chemical structures of the metabolites. The structures of the main primary metabolites ...