Studies on anabolic steroids. 10. Synthesis and identification of acidic urinary metabolites of oxymetholone in a human11Part 9 of this paper is in press (itSteroids vol 57, 1992).
摘要:
Two major unconjugated acidic metabolites of oxymetholone (17-beta-hydroxy-2-hydroxymethylene-17-alpha-methyl-5-alpha-androstan-3-one, 1), namely, 17-beta-hydroxy-17-alpha-methyl-2,3-seco-5-alpha-androstane-2,3-dioic acid (2) and 3-alpha,17-beta-dihydroxy-17-alpha-methyl-5-alpha-androstane-2-beta-carboxylic acid (6a), were detected by gas chromatography/mass spectrometry in urine samples collected after oral administration of 1 to a human volunteer. Reference steroid 2 was synthesized and identified. The identification of urinary metabolite 6a was based on the synthesis of its stereoisomers and the isomerization of the methyl ester 6b to its 2-epimer, 3-alpha,17-beta-dihydroxy-17-alpha-methyl-5-alpha-androstane-2-alpha-carboxylic acid methyl ester (9b). The mechanisms accounting for the formation of these acidic metabolites are discussed.