Results 71 to 80 of about 128 (107)
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Lipids, 2000
AbstractIn addition to the C21 steroid 15α‐hydroxypregna‐4,6‐dien‐3,20‐dione, four 1‐ or 2‐acylated polyunsaturated monoglycerides, 1‐ or 2‐(cis‐5,8,11,14‐eicosatetraenoyl)‐glycerol and 1‐ or 2‐(cis‐5,8,11,14,17‐eicosapentaenoyl)glycerol were identified as constituents of the prothoracic defensive gland secretion of the dytiscid beetle Agabus affinis ...
Schaaf, O., Dettner, K.
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AbstractIn addition to the C21 steroid 15α‐hydroxypregna‐4,6‐dien‐3,20‐dione, four 1‐ or 2‐acylated polyunsaturated monoglycerides, 1‐ or 2‐(cis‐5,8,11,14‐eicosatetraenoyl)‐glycerol and 1‐ or 2‐(cis‐5,8,11,14,17‐eicosapentaenoyl)glycerol were identified as constituents of the prothoracic defensive gland secretion of the dytiscid beetle Agabus affinis ...
Schaaf, O., Dettner, K.
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ChemInform Abstract: SELECTIVE DOUBLE BOND ISOMERIZATIONS OF A‐NOR‐PREGNADIENES
Chemischer Informationsdienst, 1978AbstractDie Reaktionsfolge (IVa) ‐+ (Va)‐(VI)‐(VIII) wurde als Modelluntersuchung für die Totalsynthese des Pregnenons (VIII) durchgeführt.
E.‐J. BRUNKE, H. WOLF
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Journal of the American Chemical Society, 1956
AbstractThe title compound 17α,21‐dihydroxy‐1,4‐pregnadiene‐3,20‐dione crystallizes in the orthorhombic space group P 212121 with four molecules in the unit cell and the lattice parameters a = 7.727, b = 10.095, c = 22.876 Å. The crystal structure was determined by direct methods and refined by full matrix least squares calculations up to the ...
Peter Kabasakalian, James McGlotten
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AbstractThe title compound 17α,21‐dihydroxy‐1,4‐pregnadiene‐3,20‐dione crystallizes in the orthorhombic space group P 212121 with four molecules in the unit cell and the lattice parameters a = 7.727, b = 10.095, c = 22.876 Å. The crystal structure was determined by direct methods and refined by full matrix least squares calculations up to the ...
Peter Kabasakalian, James McGlotten
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Amino-derivatives of 11β,17α,21-Trihydroxy-3,20-Dioxo-1,4-Pregnadiene
Nature, 1961THE skeleton of corticosteroids was systematically modified, mainly in order to study the changes in the pharmacological effect of the compounds.
J, TOTH, Z, TUBA, L, SZPORNY
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The Journal of Steroid Biochemistry and Molecular Biology, 2008
In this study, we report the synthesis and biological evaluation of several new 3-substituted pregna-4,16-diene-6,20-dione derivatives (11a-11d). These compounds were prepared from the commercially available 16-dehydropregnenolone acetate. The biological effect of these steroids was demonstrated in in vivo and in vitro experiments.
Eugene, Bratoeff +4 more
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In this study, we report the synthesis and biological evaluation of several new 3-substituted pregna-4,16-diene-6,20-dione derivatives (11a-11d). These compounds were prepared from the commercially available 16-dehydropregnenolone acetate. The biological effect of these steroids was demonstrated in in vivo and in vitro experiments.
Eugene, Bratoeff +4 more
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Crystal and molecular structure of 17α‐acetoxy‐21‐hydroxy‐1,4‐pregnadiene‐3,20‐dione
Crystal Research and Technology, 1990AbstractThe title compound 17α‐acetoxy‐21‐hydroxy‐1,4‐pregnadiene‐3,20‐dione crystallizes in the orthorhombic space group P 212121 with four molecules in the unit cell and the lattice parameters a = 10.950, b = 11.857, c = 15.634 Å. The crystal structure was determined by direct methods and refined by full matrix least squares calculations up to the ...
D. Scharfenberg‐Pfeiffer +4 more
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Structure of 6-methyl-3,20-dioxo-4,6-pregnadien-17?-yl acetate, C24H32O4
Journal of Crystallographic and Spectroscopic Research, 1992The X-ray structure of 6-methyl-3,20-dioxo-4,6-pregnadien-17α-yl acetate is reported. The crystals are monoclinic, space groupP21,Z=4,a=28.955(7),b=6.597(2),c=11.064(3) A,/gb=90.80(2) °. The two crystallographically independent molecules have very similar overall geometries.
Zdzislaw Wawrzak +5 more
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