Results 261 to 270 of about 76,304 (321)

Theoretical study on C32 fullerenes and derivatives

Chemical Physics Letters, 2006
Abstract A series of B3LYP/6-31G∗ calculations reveal that the D3 isomer is the most stable isomer of C32 carbon cages. The derivatives of it, including additional productions (C32H2, C32Cl2), hetero-fullerenes (C30B2, C30N2), isoelectronic molecules ( C 30 B 2 2 - , C 30 N 2 2 + ) and dimers have ...
Rongshun Wang, Zhong-Min Su, Ying-Fei Chang, Abraham F. Jalbout, Jingping Zhang   +4 more
openaire   +2 more sources

ChemInform Abstract: C32‐Amino Derivatives of the Immunosuppressant Ascomycin.

ChemInform, 1997
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.
Mary Jo Staruch, Hyun O. Ok, Francis J. Dumont, Thomas R. Beattie, Matthew J. Wyvratt, Mark T. Goulet, John Szumiloski   +6 more
openaire   +3 more sources

Structures and stability of the hydrides of C32, C34 and C36

Chemical Physics Letters, 2008
Abstract A systematic study was performed on C32H32, C34H34 and C36H36 at the Hartree–Fock and density functional theory levels of theory. The calculated results demonstrate that the lowest-energy isomer is classic for C32H32 and non-classic for C34H34 and C36H36.
Li-Hua Gan, Jian-Qiang Zhao
openaire   +2 more sources

Different isotope compositions of C32 DPEP and C32 etioporphyrin III in oil shale

The Science of Nature, 1989
Le schiste bitumineux Julia Creek (Cretace, Australie) est utilise pour etudier la relation entre les cycloalkanoporphyrines et les polyalkylporphyrines a partir d'une comparaison des compositions ...
Henry J. Callot, M. R. Horowitz, Rubén Ocampo, Pierre Albrecht, Brian N. Popp, John M. Hayes   +5 more
openaire   +3 more sources

ChemInform Abstract: Calyculins: Asymmetric Synthesis of the C26‐C32 Fragment.

ChemInform, 1994
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.
Ari M. P. Koskinen, Petri M. Pihko
openaire   +3 more sources

A Stereoselective Synthesis of the C20-C32 Fragment of the Phorboxazoles

Synlett, 2007
The C20-C32 fragment of the phorboxazoles was realized in a stereoconvergent manner utilizing a desymmetrization approach. This successful strategy involves epimerization and modified Julia olefination as key steps.
Jhillu S. Yadav, M. Satyanarayana, G. Srinivasulu, A. C. Kunwar   +3 more
openaire   +2 more sources

Wallenone, a C32 triterpenoid from the leaves of Gyrinops walla

Phytochemistry, 1986
Abstract Wallenone, a new C 32 tirucallane-type triterpene isolated from the leaves of Gyrinops walla , has been shown to be 24-methylene-25-methyltirucall-7-en-3-one through X-ray crystallographic analysis and 2D-NMR spectroscopy.
Philip J. Cox, Yeh Schun, Geoffrey A. Cordell, R. Alan Howie   +3 more
openaire   +2 more sources

Using Synthetic Controls: Feasibility, Data Requirements, and Methodological Aspects

Journal of Economic Literature, 2021
Probably because of their interpretability and transparent nature, synthetic controls have become widely applied in empirical research in economics and the social sciences.
Alberto Abadie
semanticscholar   +1 more source

Theoretical study of metallofullerenes M@C32

Journal of Molecular Structure: THEOCHEM, 1998
Abstract 14 systems of metal atoms, embedded inside the C 32 cage, have been calculated and analyzed using the ab initio quantum chemistry Gamess program. We study their electronic structure, compare their stability. The metal atom with even electrons interjected inside the C 32 cage is more stable than the metal atom with odd electrons.
Ying-Nan Chiu, Jimei Xiao, Shan-Tao Lai, Menghai Lin, Menghai Lin, Manzheng Fu   +5 more
openaire   +3 more sources

Abstract C32: The function of GPR56 in metastasis formation of melanoma

Cancer Research, 2016
Abstract Disseminated cancer cells often persist in tissues for a long period before being manifested as clinically detectable metastases. This metastasis dormancy imposes a main threat for cancer patients, especially after their first line of cancer treatment.
Nancy Corson, Liquan Yang, Lei Xu
openaire   +2 more sources