Synthesis of 3-β-D-ribofuranosylwybutine, the most probable structure for the hypermodified nucleoside isolated from yeast phenylalanine transfer ribonucleic acids

1994 ◽  
pp. 2759-2765 ◽  
Author(s):  
Taisuke Itaya ◽  
Masatoshi Morisue ◽  
Manabu Shimomichi ◽  
Masako Ozasa ◽  
Shigeyuki Shimizu ◽  
...  
Keyword(s):  
Probable Structure ◽  
Ribonucleic Acids ◽  
Most Probable Structure

Dimensions de micelles mixtes de p-alkylbenzènesulfonates par diffusion central des rayons X

1977 ◽  
Vol 10 (1) ◽  
pp. 37-44 ◽  
Author(s):  
C. Cabos ◽  
P. Delord ◽  
J. Rouviere
Keyword(s):  
Small Angle ◽  
Small Angle Scattering ◽  
Micellar Solutions ◽  
Probable Structure ◽  
X Ray ◽  
Absolute Scale ◽  
Angle Scattering ◽  
Scattering Measurements ◽  
Two Component ◽  
Most Probable Structure

The structure of micellar solutions is determined from X-ray small-angle scattering measurements on an absolute scale. The most probable structure is chosen by comparison with spherical cylindrical and lamellar models. This method is applied to two-component micelles and it is possible to follow the variation of micellar dimensions when the concentration of each component is varying.

THE CROSBYTON ANOMALY, SOUTHEASTERN CROSBY COUNTY, TEXAS

Geophysics ◽  
1942 ◽  
Vol 7 (2) ◽  
pp. 179-191
Author(s):  
Ethel Ward McLemore ◽  
Paul Weaver ◽  
Donald C. Barton
Keyword(s):  
Torsion Balance ◽  
Probable Structure ◽  
Geological Interpretation ◽  
Most Probable Structure

The purpose of this study has been the interpretation of the most probable structure producing the slightly subcircular anomaly at Crosbyton, as mapped by the pendulum, torsion balance, magnetometer, and dip needle. Work was begun in 1935 under the direction of Dr. Barton, who was to have written the geological considerations. All calculations were completed in 1938, but unfortunately the geological interpretation was not written by Dr. Barton before his death, July 8, 1939. At my request, since he had discussed the Crosbyton anomaly with Dr. Barton many times, and was quite familiar with the work we were doing, Mr. Weaver kindly consented to write the geological interpretation and help me with the completion of the paper. It is due to his knowledge and able assistance that the paper has been brought up to date in the light of subsequent drilling by the Gulf Oil Corporation.

ON THIOSEMICARBAZONE–COPPER (I) COMPLEXES. PART IV

1964 ◽  
Vol 42 (1) ◽  
pp. 17-19 ◽  
Author(s):  
B. A. Gingras ◽  
A. F. Sirianni
Keyword(s):  
Nitrogen Atom ◽  
Vapor Pressure ◽  
Infinite Dilution ◽  
Probable Structure ◽  
Sulphur Atom ◽  
Molecular Weights ◽  
Pressure Lowering ◽  
Most Probable Structure

The structure of thiosemicarbazone–copper (I) complexes has been studied further and new data have been obtained. The most probable structure has the metal linearly coordinated to a sulphur atom of a thiosemicarbazone molecule and a nitrogen atom of a second molecule. The diamagnetism of the complexes can be accounted for by a copper–copper interaction. Molecular weights of two typical complexes have been measured by a vapor pressure lowering method in benzene. The complexes were found to associate in this solvent but appeared as dimers at infinite dilution.

scholarly journals Synthesis and Anticancer Activity of Gold(I)-Chloroquine Complexes

2017 ◽  
Vol 57 (3) ◽  
Author(s):  
Maribel Navarro ◽  
William Castro ◽  
Sorenlis González ◽  
María Jesús Abad ◽  
Peter Taylor
Keyword(s):  
Experimental Data ◽  
Anticancer Agents ◽  
Covalent Binding ◽  
Thioredoxin Reductase ◽  
Analytical Techniques ◽  
Tumor Cell Lines ◽  
Probable Structure ◽  
Covalent Interaction ◽  
Ht 29 ◽  
Most Probable Structure

Two new gold(I) -chloroquine complexes, Au(CQ)(Cl) (<strong>1</strong>) and Au(CQ)(tgta) (<strong>2</strong>), were prepared and their most probable structure were established through a combination of different spectroscopic and analytical techniques. Their interaction with two important targets of action, DNA and thioredoxin reductase (TrxR), were nvestigated. These studies showed that complexes <strong>1</strong> and <strong>2</strong> displayed two types of interaction with DNA, covalent binding through the metal center, and additionally a non-covalent interaction that is electrostatic in the case of complex <strong>1</strong>, but intercalative for complex <strong>2</strong>, which is similar to that displayed by free CQ. The experimental data indicated that these gold-CQ complexes also possess the ability to inhibit TrxR. These results led us to test their cytotoxicity against 6 tumor cell lines. The complexes displayed cytotoxic activity against the PC-3, SKBR-3, HT-29, LoVo and B16/BL6 lines. These finding suggest that gold(I)-CQ compounds, particularly [Au(CQ)(PPh<sub>3</sub>)]PF<sub>6</sub>, are promising chemotherapeutic alternatives in the search of anticancer agents.

scholarly journals Structure of silicon nitride obtained by plasma-chemical synthesis..

2020 ◽  
Vol 11 (3-2020) ◽  
pp. 162-168
Author(s):  
O. V. Sidorova ◽  
◽  
A. S. Nikitin ◽  
A.V. Kadetova ◽  
L. A. Aleshina ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Chemical Synthesis ◽  
Short Range ◽  
Short Range Order ◽  
Probable Structure ◽  
X Ray Diffraction ◽  
Plasma Chemical ◽  
Plasma Chemical Synthesis ◽  
X Ray ◽  
Most Probable Structure

X-ray diffraction results of short-range order in nanoscale powders of silicon nitride obtained by plasma-chemical synthesis are presented. It is shown that the most probable structure of nanopowder silicon nitride can be characterized by a model of a disordered network of SiN4tetrahedra.

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