The recently discovered mammalian molybdoprotein mARC1 is capable of reducing N-hydroxylated compounds. Upon reconstitution with cytochrome b(5) and b5 reductase, benzamidoxime, pentamidine, and diminazene amidoximes, N-hydroxymelagatran, guanoxabenz, and N-hydroxydebrisoquine are efficiently reduced. These substances are amidoxime/N-hydroxyguanidine prodrugs, leading to improved bioavailability compared to the active amidines/guanidines. Thus, the recombinant enzyme allows prediction about in vivo reduction of N-hydroxylated prodrugs. Furthermore, the prodrug principle is not dependent on cytochrome P450 enzymes.
METHOD FOR PRODUCING PRODRUG FROM AMIDOXIME AND N-HYDROXYGUANIDINE CARBOXYLIC ACID ESTERS
申请人:Dritte Patentportfolio Beteiligungsgesellschaft mbH & Co. KG
公开号:US20140350293A1
公开(公告)日:2014-11-27
The invention relates to a method for improving the bioavailability of pharmaceutical substances and for allowing the pharmaceutical substances to permeate the blood-brain barrier, the pharmaceutical substances having at least one or more amidine, guanidine, N-hydroxyamidine (amidoxime) or N-hydroxyguanidine functions. The invention also relates to medicaments containing the correspondingly modified pharmaceutical substances.