نتایج جستجو برای: c19

تعداد نتایج: 531  

2007
Feng Wang Ruixue Zhang Shengli Shi Oliver Hankinson

The aromatic hydrocarbon receptor (AhR) mediates biological responses to certain exogenous ligands, such as the environmental contaminant 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), and has also been demonstrated to modulate the cell cycle and differentiated state of several cell lines independently of exogenous ligands. In this study, we used DNA microarray analysis to elucidate the profile of...

Journal: :Arteriosclerosis and thrombosis : a journal of vascular biology 1994
J F Toussaint J F Southern V Fuster H L Kantor

Previous investigations have used 13C-nuclear magnetic resonance (NMR) spectroscopy to demonstrate the similarities between lipoproteins and the mobile lipids of atheroma. In this study, we tested the hypothesis that 13C-NMR changes are related to indices of histological severity. We classified 20 human arteries according to their obstruction ratio (OR), defined as the ratio of the plaque area ...

Journal: :Chemical and Pharmaceutical Bulletin 2006

Journal: :Chemical and Pharmaceutical Bulletin 2004

Journal: :Journal of Student Research 2022

Purpose. This study follows the trajectory in United States and India of 35 entrepreneurs with similar backgrounds India. It controls for irrelevant-to-this-study factors that impact financing entrepreneurial paths, sheds light into at-times contradictory gender findings literature.
 Design/methodology/approach. The is based on interviews upper-middle class from business-oriented Mumbai-Ma...

Journal: :Chinese Journal of Organic Chemistry 2014

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2004
David R Williams Andre A Kiryanov Ulrich Emde Michael P Clark Martin A Berliner Jonathan T Reeves

A highly convergent total synthesis of the potent anticancer agent (+)-phorboxazole A (1) is accomplished. Four components (3-6) are assembled with considerations for control of absolute and relative stereochemistry. Iterative asymmetric allylation methodology addresses key stereochemical features in the preparation of the 2,6-cis- and 2,6-trans-tetrahydropyranyl rings of the C3-C19 component (...

Journal: :Angewandte Chemie 2009
Xiaoxing Wu Jingye Zhou Barry B Snider

An extremophilic challenge: Stereospecific condensation of a fully functionalized ketal aldehyde and a 2,6-dihydroxybenzoic acid is the key step in the synthesis of (-)-berkelic acid confirming Fürstner's reassignment of the stereochemistry at C18 and C19, establishing the absolute stereochemistry, and tentatively assigning the stereochemistry at C22.

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