3β, 6α-DIHYDROXYALLOPREGNANE-20-ONE FROM HUMAN URINE
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چکیده
منابع مشابه
3β,12β,14α-Trihydroxypregnan-20-one
The title compound, C(21)H(34)O(4), is a steriod of the pregnane family prepared by the sequential oxidation and reduction of 3β,12β-diacet-oxy-20-ethyl-enedioxy-pregnan-14-ene. The con-formations of the six-membered rings are close to chair forms, while the five-membered ring adopts an envelope conformation. All the rings are trans-fused and an intra-molecular O-H⋯O hydrogen bond occurs. In th...
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The title steroid, C34H50O6S, is an inter-mediate on the synthetic route between diosgenin and brassinosteroids, which possess the A ring modified with the 2α,3α-diol functionality. The polycyclic spiro-stan system has the expected conformation, with six-membered rings adopting chair forms and the five-membered rings envelope forms (flap atoms are the methine C atom in the C/D-ring junction and...
متن کامل3β,6α-Diacetoxy-5,9α-dihydroxy-5α-cholest-7-en-11-one
The title compound, C31H48O7, a polyoxygenated steroid, was obtained by chemical oxidation of 7-de-hydro-cholesteryl acetate. The mol-ecular geometry features trans A/B and C/D junctions at the steroid core with the acetyl groups in the equatorial position and a fully extended conformation for the alkyl side chain. A chair conformation is observed for rings A and C while ring B adopts a half-ch...
متن کامل5α,6α-Epoxy-7-norcholestan-3β-yl acetate
The title cholestan, C(28)H(46)O(3), was prepared by epoxidation of 7-norcholest-5-en-3β-yl acetate and crystallized by slow evaporation from an ethano-lic solution. All rings are trans fused. The 3β-acetate and the 17β-cholestane side chain are in equatorial positions. The mol-ecule is highly twisted due to its B-nor characteristic. A quantum chemical ab-initio Roothaan Hartree-Fock calculatio...
متن کامل3β-Acetoxy-19-hydroxy-Δ5-pregnen-20-one
In the title compound, C(23)H(34)O(4), the C/D and D/E rings are trans fused and the A/B ring possesses an anti fusion. The two cyclo-hexane rings adopt a chair conformation while the cyclo-hexene ring exhibits a half-chair conformation. The cyclo-pentane ring displays an envelope conformation with the C atom bearing the methyl group as the flap. In the crystal, the mol-ecules are linked by O-H...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1954
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)71272-6