Matches in SemOpenAlex for { <https://semopenalex.org/work/W2034786725> ?p ?o ?g. }
- W2034786725 abstract "3 beta,16 beta,19-Trihydroxyandrost-5-en-17-one (12) was synthesized from 5 alpha-bromo-3 beta-acetoxy-6 beta,19-epoxyandrostan-17-one (2) through acetoxylation at C-16 beta of the enol acetate 4 with lead tetraacetate and reductive cleavage of the epoxide ring with zinc dust yielding the 3 beta,16 beta-diacetoxy-19-hydroxy steroid 11, followed by hydrolysis of the acetoxy groups with sulfuric acid. Jones oxidation of compound 11 followed by the acid hydrolysis gave the 19-oxo steroid 15. 5 alpha-Bromo-3 beta-hydroxy-16 beta-acetoxy-6 beta,19-epoxyandrostan-17-one (8), obtained by selective hydrolysis of the 3-formate 5 with ammonium hydroxide, was oxidized with Jones reagent to afford the 3-oxo steroid 16, which was converted into the 19-hydroxy derivative 17 by treatment with zinc dust. 16 beta,19-Dihydroxyandrost-4-ene-3,17-dione (18) and its 19-oxo derivative 21 were obtained from compound 17 through a similar reaction sequence." @default.
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- W2034786725 date "1990-09-01" @default.
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- W2034786725 title "Synthesis of 3β,16β,19-trihydroxyandrost -5-en-17-one and 16β3,19-dihydroxyandrost-4-ene-3,17-dione and their 19-oxo derivatives" @default.
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- W2034786725 doi "https://doi.org/10.1016/0039-128x(90)90095-s" @default.
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