Über Pterinchemie 18. Mitteilung [1] Monohydro‐ und Trihydropterin‐Radikale

Abstract

Abstract By oxydation of N(5)‐methyl‐6,7‐diphenyl‐5,6‐dihydro‐ and N(5)‐methyl‐6,7‐diphenyl‐5,6,7,8‐tetrahydro‐pterine derivatives with perhydrol 8‐monohydro‐ and 6,7,8‐trihydro‐pteridine radical cations are produced which are sufficiently stable for detection and structural elucidation by ESR. hyperfine analysis. The biological implications of these radicals for pteridine dependent hydroxylation and methyl transfer from 5‐methylfolinic acid are discussed.