Synthesis of mono- and diglucosiduronates of metabolites of deoxycorticosterone and corticosterone and analysis by a new mass spectrometric technique
作者:V.R. Mattox、A.N. Nelson、W.D. Vrieze、I. Jardine
DOI:10.1016/0039-128x(83)90135-6
日期:1983.10
ester groups and gave the corresponding steroidal glucosiduronic acids 12, 6 and 8. Upon treatment with diazomethane, these acids produced the equivalent methyl esters. The C-3, the C-21 and the C-3,21 glucosiduronates of 3 alpha,21-dihydroxy-5 beta-pregnan-11,20-dione were prepared by previously reported methods and converted into the corresponding C-20 semicarbazones (14, 20 and 26). With C-20 stabilized
通过将 3 alpha,21-dihydroxy-5 beta-pregnan-20-one 或其适当的单乙酸酯与 2,3,4-tri-O-acetyl-1-bromo-1-deoxy-alpha-D-glucuronate 缩合在 Koenigs-Knorr 反应中,β-D-糖苷糖苷酸 10、4 和 7 以聚乙酸甲酯的形式获得。这些物质的碱水解裂解酯基并产生相应的甾体葡糖苷酸12、6和8。在用重氮甲烷处理后,这些酸产生等效的甲酯。3 alpha,21-dihydroxy-5 beta-pregnan-11,20-dione 的 C-3、C-21 和 C-3,21 glucosiduronates 通过先前报道的方法制备并转化为相应的 C-20 缩氨基脲(14、20 和 26)。由于氨基脲基团稳定了 C-20 以防止还原,可以将这些物质中的 11-氧代官能团还原为 11-β-羟基;在 pH