A simple method for the small scale synthesis and solid-phase extraction purification of steroid sulfates
作者:Christopher C. Waller、Malcolm D. McLeod
DOI:10.1016/j.steroids.2014.09.006
日期:2014.12
Steroid sulfates are a major class of steroid metabolite that are of growing importance in fields such as anti-doping analysis, the detection of residues in agricultural produce or medicine. Despite this, many steroid sulfate reference materials may have limited or no availability hampering the development of analytical methods. We report simple protocols for the rapid synthesis and purification of steroid sulfates that are suitable for adoption by analytical laboratories. Central to this approach is the use of solid-phase extraction (SPE) for purification, a technique routinely used for sample preparation in analytical laboratories around the world. The sulfate conjugates of sixteen steroid compounds encompassing a wide range of steroid substitution patterns and configurations are prepared, including the previously unreported sulfate conjugates of the designer steroids furazadrol (17 beta-hydroxyandrostan[2,3-d]isoxazole), isofurazadrol (17 beta-hydroxyandrostan[3,2-c]isoxazole) and trenazone (17 beta-hydroxyestra-4,9-dien-3-one). Structural characterization data, together with NMR and mass spectra are reported for all steroid sulfates, often for the first time. The scope of this approach for small scale synthesis is highlighted by the sulfation of 1 mu g of testosterone (17 beta-hydroxyandrost-4-en-3-one) as monitored by liquid chromatography-mass spectrometry (LCMS). (C) 2014 Elsevier Inc. All rights reserved.
D'Alo, Farmaco, Edizione Scientifica, 1956, vol. 11, p. 477,481
作者:D'Alo
DOI:——
日期:——
Synthesis of steroid bisglucuronide and sulfate glucuronide reference materials: Unearthing neglected treasures of steroid metabolism
作者:Andy Pranata、Christopher C. Fitzgerald、Olha Khymenets、Erin Westley、Natasha J. Anderson、Paul Ma、Oscar J. Pozo、Malcolm D. McLeod
DOI:10.1016/j.steroids.2018.11.017
日期:2019.3
studied by laborious and indirect fractionation, hydrolysis and gas chromatography-mass spectrometry (GC-MS) analysis. Recently, the synthesis and characterisation of steroid bis(sulfate) (aka disulfate or bis-sulfate) reference materials enabled the liquid chromatography-tandem mass spectrometry (LC-MS/MS) study of this metabolite class and the development of a constant ion loss (CIL) scan method for