Results 81 to 90 of about 799 (135)

Azasteroids and heart adenosine triphosphatase

Biochemical Pharmacology, 1966
Abstract Azasteroids, some known to be active, others to be inactive as inotropic and antishock agents, were tested as inhibitors of a metal-stimulated heart ATPase. In every instance the biologically active azasteroids inhibited catalysis just as did ouabain and the erythrophleum alkaloids.
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Azasteroids derived from fusidic acid

Journal of the Chemical Society, Perkin Transactions 1, 1998
The Beckmann rearrangement pathway of the (E)-11-oxime 6, derived from fusidic acid, one of the uncommon 9β-steroids with ring B constrained in a boat conformation, was investigated. It was found that 6 was converted into methyl 3-O-acetyl-11-aza-11a-homo-11a-oxo-24,25-dihydrofusidate 7, the ‘normal’ product of rearrangement, when treated with toluene ...
William S. Murphy, Basil Sarsam, George Ferguson, John F. Gallagher   +3 more
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Luminescence Properties of 8-azasteroid Molecules

Journal of Applied Spectroscopy, 1999
The chemical and biomedical studies of steroid heterocyclic analogs have arisen with the purpose of separation of unfavourable hormonal (influence on mineral and carbohydrate interchange) and valuable physiological (antiinflammatory, antishock, antiallergen action) effects intrinsic for steroids.
Afanasii A. Akhrem, Nikolai A. Borisevich, Olga V. Gulyakevich, Alexander L. Mikhalchuk, Sergei A. Tikhomirov, Georgii B. Tolstorozhev   +5 more
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Effect of Azasteroids on Gram-Positive Bacteria

Journal of Bacteriology, 1967
A group of nitrogen-containing steroids closely related in structure was screened for antibacterial activity, by use of Bacillus subtilis and Sarcina lutea as the test organisms. The most active compounds were cholesterol derivatives containing a tertiary or quaternary nitrogen in, or ...
F, Varricchio, N J, Dorrenbos, A, Stevens   +2 more
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ChemInform Abstract: UEBER AZASTEROIDE

Chemischer Informationsdienst, 1972
AbstractDieser Übersichtsartikel beschreibt Synthesen und biologische Eigenschaften von Azasteroiden.
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ChemInform Abstract: Formation of Acetamido Azasteroids.

ChemInform, 1991
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
S. NIKOLAROPOULOS, P. CATSOULACOS
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Proton-Acceptor Properties of 8-Azasteroids

Russian Physics Journal, 2004
Proton-acceptor properties of immune-active 8-azasteroid molecules in the ground and fluorescent states were estimated using the wave functions calculated by the INDO method. The effect of substitution on the foregoing properties was examined. An attempt was made to discover a correlation between the directivity of the immune action and proton-acceptor
O. K. Basyl’, V. Ya. Artykhov, G. V. Mayer   +2 more
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ChemInform Abstract: SYNTHESIS OF INDOLIZIDINE AZASTEROIDS

Chemischer Informationsdienst, 1981
AbstractEinige Indolizidin‐Azasteroide wie (IV), (V), (VI), (VII) und (VIII) werden durch Ringverengung aus dem ungesättigten Lactam (I) über das Diol (II) und die ringgeöffnete Verbindung (III) hergestellt.
J. W. MORZYCKI, W. RODEWALD
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The syntheses of 9-azasteroids—I

Tetrahedron, 1965
Abstract 4-Oxobenzo [c] quinolizidines have been examined as possible precursors of 9-azasteroids. 4-Oxo- and 3-methyl-4-oxobenzo [c] quinolizinium salts have been prepared and reduced to 4-hydroxy-benzo [c] quinolizidines, but attempts at oxidation of these alcohols have failed.
G. Jones, J. Wood
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The synthesis of 9-azasteroids—II

Tetrahedron, 1965
Abstract The synthesis of 3-cyano-4-oxo-1,2,3,4,5,6-hexahydrobenzo[c]quinolizine (XIV), of 2-carbethoxy-3-oxo-1,2,3,4,5,6-hexahydrobenzo[c]quinolizine(XVII), and of 4-cyano-3-oxo-1,2,3,4,5,6-hexahydrobenzo[c]quinolizine (XXIX) is reported. Attempts to methylate 3-carbethoxy-4-oxo-1,2,3,4,5,6-hexahydrobenzo[c]quinolizine (II) were unsuccessful ...
G. Jones, J. Wood
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