نتایج جستجو برای: stereoisomerism

تعداد نتایج: 80  

Journal: :Chemical communications 2014
Maria Riala Nikos Chronakis

We have synthesized and isolated two C2-symmetric enantiomerically pure trisadducts of C60 with an inherently chiral trans-3,trans-3,trans-3 addition pattern with the aid of an enantiopure cyclo-tris-malonate tether. An unexpected stereoisomerism was observed which was attributed to the spatial arrangement of spacers in the tether.

Journal: :Journal of the Institute of Brewing 1969

Journal: :gene, cell and tissue 0
ali noorafshan histomorphometry and stereology research center, shiraz university of medical sciences, shiraz, ir iran; anatomy department, school of medicine, shiraz university of medical sciences, shiraz, ir iran; histomorphometry and stereology research center, shiraz university of medical sciences, shiraz, ir iran. tel/fax: +98-7132304372

2006

B y now you should be familiar with position isomers wherein compounds of the same molecular formula differ because substituents, chain branches, and so on, are not at the same positions in the molecules. 1-Chloropropane and 2-chloropropane are straightforward examples of position isomers. A much more subtle form of isomerism is present when two dijfjrerent compounds have the same molecular for...

Journal: :Molecular pharmacology 2012
Ute Jungwirth Dimitris N Xanthos Johannes Gojo Anna K Bytzek Wilfried Körner Petra Heffeter Sergey A Abramkin Michael A Jakupec Christian G Hartinger Ursula Windberger Markus Galanski Bernhard K Keppler Walter Berger

Oxaliplatin is successfully used in systemic cancer therapy. However, resistance development and severe adverse effects are limiting factors for curative cancer treatment with oxaliplatin. The purpose of this study was to comparatively investigate in vitro and in vivo anticancer properties as well as the adverse effects of two methyl-substituted enantiomerically pure oxaliplatin analogs [[(1R,2...

2013
Pierre-Anthony Grenier Luc Brun Didier Villemin

Graph kernels provides a framework combining machine learning and graph theory. However, kernels based upon the molecular graph, which can not distinguish stereoisomers, are unable to predict properties which differs among stereoisomers. This article presents a graph kernel which takes into account chirality, and is used (in combination with a classical graph kernel) to predict the optical rota...

Journal: :Bulletin of the Agricultural Chemical Society of Japan 1958

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