Abstract
Treatment with ornithine decarboxylase inhibitors leads to a marked increase of decarboxylated S-adenosylmethionine (dc-SAM) in various tissues, accompanied by the concomitant formation of a metabolite of dc-SAM. This metabolite has been isolated from rat prostate samples by a combination of chromatographic procedures. The use of IH-NMR and of fast atom bombardement mass spectometry and the synthesis of an authentic sample allowed the unambiguous characterization of this unknown compound as the N-acetyl derivative of dc-SAM. A reverse-phase high performance liquid chromatography procedure was developed for the separation of dc-SAM and its N-acetyl derivative into their diastereomers resulting from the chiral sulfonium group.
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