Results 311 to 320 of about 937,811 (341)
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Direct Nitration of Vinylcycles with Copper Nitrate
Organic Letters, 2023A direct nitration of vinylcyclopropanes is disclosed with Cu(NO3)2 and KI in a regio- and stereoselective manner to afford nitroalkenes efficiently, where the cyclopropane skeleton was retained. The given method could be extended to other vinylcycles as well as biomolecule derivatives with wide substrate scope, good functionality tolerance, and ...
Litao Zhou +5 more
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Nitration by titanium (IV) nitrate
Tetrahedron Letters, 1973Titan(IV)-nitrat (II) reagiert mit den Aromaten (I) zu Mischungen aus den isomeren Nitrierungsprodukten (III) - (V).
D.W. Amos, D.A. Baines, G.W. Flewett
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Medical Clinics of North America, 1988
Nitroglycerin and the long-acting nitrates are playing an increasingly important role in cardiovascular medicine. These agents are recommended in all of the various anginal syndromes and are as effective as the beta-blockers and calcium channel antagonists.
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Nitroglycerin and the long-acting nitrates are playing an increasingly important role in cardiovascular medicine. These agents are recommended in all of the various anginal syndromes and are as effective as the beta-blockers and calcium channel antagonists.
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AACN Advanced Critical Care, 1992
Nitrates have been used for the last 130 years to treat and control the symptoms of angina pectoris. Within the last 15 years, nitrates also have been shown to limit infarct size and to be beneficial in the treatment of patients with severe intractable heart failure, cardiogenic shock, severe mitral and aortic regurgitation, hypertensive episodes, and ...
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Nitrates have been used for the last 130 years to treat and control the symptoms of angina pectoris. Within the last 15 years, nitrates also have been shown to limit infarct size and to be beneficial in the treatment of patients with severe intractable heart failure, cardiogenic shock, severe mitral and aortic regurgitation, hypertensive episodes, and ...
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Plant Science Letters, 1983
Summary Cells of Chlorella vulgaris (Cambridge culture collection, strain 211/12) grown in chemostat under conditions of nitrate limitation, exhibit very high levels of nitrate reductase activity. Similar levels of activity were found in cells grown in chemostat with a limited nitrogen source constituted by 75% ammonium plus 25% nitrate. By contrast,
Di Martino Rigano V +4 more
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Summary Cells of Chlorella vulgaris (Cambridge culture collection, strain 211/12) grown in chemostat under conditions of nitrate limitation, exhibit very high levels of nitrate reductase activity. Similar levels of activity were found in cells grown in chemostat with a limited nitrogen source constituted by 75% ammonium plus 25% nitrate. By contrast,
Di Martino Rigano V +4 more
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The American Journal of Cardiology, 1985
These studies have shown the following: Tolerance to the hemodynamic and antianginal effects of isosorbide dinitrate. Tolerance develops quickly and can be demonstrated within 24 hours. Tolerance is rapidly reversed and the return of normal responsiveness is seen within 21 hours withdrawal of isosorbide dinitrate.
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These studies have shown the following: Tolerance to the hemodynamic and antianginal effects of isosorbide dinitrate. Tolerance develops quickly and can be demonstrated within 24 hours. Tolerance is rapidly reversed and the return of normal responsiveness is seen within 21 hours withdrawal of isosorbide dinitrate.
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Biochimica et Biophysica Acta (BBA) - Protein Structure, 1968
Abstract The nitration of bovine pancreatic ribonuclease with tetranitromethane has been studied. A procedure involving solvent extraction of excess reagent and product is described. A spectrophotometric procedure for determining the extent of nitration of tyrosines has been devised, which is not vitiated by the presence of other chromophoric ...
Walter Gratzer +3 more
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Abstract The nitration of bovine pancreatic ribonuclease with tetranitromethane has been studied. A procedure involving solvent extraction of excess reagent and product is described. A spectrophotometric procedure for determining the extent of nitration of tyrosines has been devised, which is not vitiated by the presence of other chromophoric ...
Walter Gratzer +3 more
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The nitrate symmetry in metallic nitrates
Journal of Molecular Spectroscopy, 1960Abstract An examination of the infrared spectra of metallic nitrates has shown that in progressing from a monovalent metallic nitrate to a tetravalent metallic nitrate and increased lowering of the nitrate symmetry, and a transition from a point group D3h symmetry to a point group C2v symmetry occurs.
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2014
Nitrates are salts of the nitric acid (HNO3). It has been estimated that one quarter of the initial Martian atmospheric molecular nitrogen today is fixed in the form of nitrates in the soil. A possible formation process of these nitrates is the dissociation of the atmospheric molecular nitrogen through shock heating caused by impacts or through ...
Daniela Tirsch +2 more
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Nitrates are salts of the nitric acid (HNO3). It has been estimated that one quarter of the initial Martian atmospheric molecular nitrogen today is fixed in the form of nitrates in the soil. A possible formation process of these nitrates is the dissociation of the atmospheric molecular nitrogen through shock heating caused by impacts or through ...
Daniela Tirsch +2 more
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JAMA: The Journal of the American Medical Association, 1977
To the Editor.— We felt Dr Reichek's recent review "Long-Acting Nitrates in the Treatment of Angina Pectoris" (236:1399, 1976) was an excellent survey of the clinical pharmacology of these compounds. However, he raised one point with which we cannot fully agree and which we feel the recent literature does not support. In the discussion on toxicity of
David Robertson, Rose Marie Stevens
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To the Editor.— We felt Dr Reichek's recent review "Long-Acting Nitrates in the Treatment of Angina Pectoris" (236:1399, 1976) was an excellent survey of the clinical pharmacology of these compounds. However, he raised one point with which we cannot fully agree and which we feel the recent literature does not support. In the discussion on toxicity of
David Robertson, Rose Marie Stevens
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