Results 31 to 40 of about 68,233 (207)

Infrared and Raman Spectroscopy of the Dirhodium Tetraacetate Complexes Rh2(O2CCH3)4, Rh2(18O2CCH3)4, Rh2(O2CCD3)4 and Rh2(O2CCH3)4(H2O)2

open access: yesCroatica Chemica Acta, 1988
The infrared (3500-50 cm-I), and Raman (3550-30 cm-I) spectra of the dirhodium tetraacetate species Rh2(02CCHs)4, Rh2(IB02CCHs)4, Rh2(02CCDS)4, and Rh2(02CCHs)4(H20)2 have been recorded and the key bands assigned, The oxygen-18 and deuteration studies, in particular, assisted with ma king the important band assignments for the anhydrous complex, for ...
Clark, Robin J. H., Hempleman, Andrew J.
openaire   +3 more sources

AMP-activated protein kinase determines apoptotic sensitivity of cancer cells to ginsenoside-Rh2

open access: yesJournal of Ginseng Research, 2014
Ginseng saponins exert various important pharmacological effects with regard to the control of many diseases, including cancer. In this study, the anticancer effect of ginsenosides on human cancer cells was investigated and compared.
Min-Jung Kim   +6 more
doaj   +1 more source

Comparative analysis of the expression level of recombinant ginsenoside-transforming β-glucosidase in GRAS hosts and mass production of the ginsenoside Rh2-Mix. [PDF]

open access: yesPLoS ONE, 2017
The ginsenoside Rh2, a pharmaceutically active component of ginseng, is known to have anticancer and antitumor effects. However, white ginseng and red ginseng have extremely low concentrations of Rh2 or Rh2-Mix [20(S)-Rh2, 20(R)-Rh2, Rk2, and Rh3].
Muhammad Zubair Siddiqi   +5 more
doaj   +1 more source

Synergistic Effect of Ginsenoside Rh2 Combines with Ionizing Radiation on CT26/luc Colon Carcinoma Cells and Tumor-Bearing Animal Model

open access: yesPharmaceuticals, 2023
Background: The local tumor control rate of colon cancer by radiotherapy is unsatisfactory due to recurrence and radioresistance. Ginsenoside Rh2 (Rh2), a panoxadiol saponin, possesses various antitumor effects.
Shan-Chih Lee   +7 more
doaj   +1 more source

Controlling Near‐Infrared Fluorescence‐to‐Phosphorescence Ratios and Triplet Lifetimes in Rhodium(I) Dimers via Primary and Secondary Coordination Sphere Effects

open access: yesAngewandte Chemie, EarlyView.
RhI dimers with bridging aryl isocyanide and di‐phosphine ligands show NIR‐I or NIR‐II fluorescence/phosphorescence, depending on the ligands and conformational rigidity at the Rh2 core. Rh‐Rh interactions can be tuned by peripheral modification of the aryl isocyanide ligand, resulting in a rigid Rh2 core and improved photophysical properties ...
Vanitha R. Naina   +4 more
wiley   +2 more sources

On bounding the bandwidth of graphs with symmetry [PDF]

open access: yes, 2015
We derive a new lower bound for the bandwidth of a graph that is based on a new lower bound for the minimum cut problem. Our new semidefinite programming relaxation of the minimum cut problem is obtained by strengthening the known semidefinite ...
Sotirov, Renata, van Dam, Edwin R.
core   +3 more sources

Alcohol‐Directed Carboamination of Conjugated Enynes

open access: yesAngewandte Chemie, EarlyView.
The first general three‐component intermolecular Pd‐catalyzed carboamination of conjugated enynes enables the coupling of anilines and aryl triflates to produce functionalized allenic amines, utilizing a native alcohol directing group to control regioselectivity.
Helena Solé‐Àvila   +3 more
wiley   +2 more sources

Ginsenoside Rh2 represses autophagy to promote cervical cancer cell apoptosis during starvation

open access: yesChinese Medicine, 2020
Background Cancer cells through autophagy-mediated recycling to meet the metabolic demands of growth and proliferation. The steroidal saponin 20(S)-ginsenoside Rh2 effectively inhibits the growth and survival of a variety of tumor cell lines and animal ...
Jiawen Wang   +7 more
doaj   +1 more source

The Dark Molecular Gas

open access: yes, 2010
The mass of molecular gas in an interstellar cloud is often measured using line emission from low rotational levels of CO, which are sensitive to the CO mass, and then scaling to the assumed molecular hydrogen H_2 mass.
Abdo   +45 more
core   +1 more source

Synthesis of diversely functionalised 2,2-disubstituted oxetanes: fragment motifs in new chemical space [PDF]

open access: yes, 2015
Novel oxetane motifs incorporating diverse functional groups on the ring are readily accessed by an O–H insertion/cyclisation strategy.
Bull, JA, Croft, RA, Davis, OA
core   +1 more source

Home - About - Disclaimer - Privacy