Acetylene Compounds of Potential Pharmacological Value. II. 4-Amino-2-butynyl Esters of Phenylcarbamic Acids.
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Performance of 2-Amino Tetraphenyl Porphyrin as Stationary Phase in RP-HPLC of Amino Acids
The search for new stationary phases has been one of the predominant concerns in high performance liquid chromatography (HPLC) in order to achieve better resolutions, longer column lives, and reduce the time of analysis. A chromatographic packing for separation of underivatized amino acids (AAs) were prepared by dynamically coating 2-amino tetraphenyl prophyrin (atpp) on a C-18 reversed-pha...
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The first stage of these studies consisted in the development of antitumor drugs of the type of alkylating metabolites 1952-55 (5, 6, 13). These are metabolites or other natural or biologically active compounds which are combined with a cytotoxic group (e.g., the chloroethylamino group). Sarcolysin and dopan are representative of drugs of this type. In the former, the essential amino acid, phen...
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The stereochemistry of the actinide elements has recently undergone considerable development and a wide variety of coordination numbers and geometries have been observed. This structural versatility arises from the lack of strong crystal field effects for the 5f-electronic configurations as well as from the large ionic radii of these metal ions, which change markedly with oxidation number, ...
متن کاملcomparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1963
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.17-1182