Results 151 to 160 of about 1,295 (195)

Inhibition of mitochondrial respiration by progesterone and an azasteroid

Archives of Biochemistry and Biophysics, 1967
Abstract The effect of progesterone and 4-dimethylaminoethyl-4-aza-5-cholester-3-one methiodide (azasteroid) on DPNH and succinate oxidation in submitochondrial particles has been studied. Progesterone inhibited DPNH oxidation by oxygen or ubiquinone-6 equally.
F, Varricchio, D R, Sanadi
openaire   +2 more sources

Review on the Synthesis of 8-Azasteroids

Current Organic Chemistry, 2004
H. Senthilkumar
semanticscholar   +2 more sources

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.
openaire   +2 more sources

Exciton luminescence of 8-azasteroid microcrystals

Journal of Applied Spectroscopy, 1999
Luminescence of microcrystals of 2,3-methoxy-8-azagon-1,3,5(10),13-tetraene-12,17-dion of the class of molecules of biologically active steroids is detected at room temperature (293 K). It represents fast fluorescence of free and self-localized excitons and prolonged phosphorescence of triplet excitons.
A. A. Akhrem, N. A. Borisevich, O. V. Gulyakevich, V. N. Knyukshto, A. L. Mikhal'chuk, S. A. Tikhomirov, G. B. Tolstorozhev   +6 more
  +4 more sources

Synthesis of phenanthridones, quinolinequinones and 7-azasteroids

Tetrahedron, 1999
Abstract Cleavage of ring D of lycorines, obtained by an intramolecular cycloaddition of an aryne to an azadiene, led to phenanthridines, which were either oxidized to quinolinequinones or cyclized to 7-azasteroids, both of which families are of potential pharmacological interest.
Concepción C. González, E. Guitián, L. Castedo   +2 more
semanticscholar   +2 more sources

7-azasteroid analogues—I

Tetrahedron, 1973
Abstract Although 7-methoxy- and 6,7-dimethoxy-2-methyl-4-vinyl-isocarbostyrils could not be isolated and characterised, they have been generated in situ and shown to undergo cyclo-addition reactions with typical dienophiles. The enol acetate of 2-methyl-4-acetylisocarbostyril has also been trapped as its adduct with maleic anhydride and with p ...
S.F. Dyke, P.A. Bather, A.B. Garry, D.W. Wiggins   +3 more
openaire   +1 more source

Theoretical study of the phosphorescence of 8-azasteroids

Journal of Applied Spectroscopy, 2006
We have used quantum chemical methods for a theoretical study of the luminescent characteristics (including estimating the rate constants for intramolecular T1 → S0 electronic transitions) of the molecules of four immunoactive compounds of the 8-azasteroid class. We have established that the T1 state is localized on the enaminodicarbonyl moiety that is
V Ya Artyukhov, G V Maier, Artyukhov V Ya   +2 more
exaly   +2 more sources

ChemInform Abstract: UEBER AZASTEROIDE

Chemischer Informationsdienst, 1972
AbstractDieser Übersichtsartikel beschreibt Synthesen und biologische Eigenschaften von Azasteroiden.
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source