Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Aleksander Ratajczak"'
Autor:
Aleksander Ratajczak, Agnieszka Mencel, Violetta Lysiak, Krystyna Jarzembek, Jaroslaw Polanski
Publikováno v:
Bioorganic & Medicinal Chemistry. 13:671-675
A number of sweeteners contain a sulfonyl group. In our current search for new glucophores several new compounds containing such group were obtained. A series of novel 1-phenylsulfonylcyklohexanecarboxylic acids and 2-arylsulfonylalkanecarboxylic aci
Publikováno v:
Journal of Molecular Structure. 407:71-80
Molecular modeling and X-ray analysis have been used to study the sweet taste chemoreception of α-arylsulfonylalkanoic acids. It has been found that the 3D model builder CORINA provides structures capable of discriminating active and inactive compou
Publikováno v:
Journal of Molecular Structure: THEOCHEM. 283:207-211
AM1 molecular orbital calculations were carried out for a series of compounds having the formula Ph-SO 2 -CR 1 R 2 -COOH, some of which possess a sweet taste. The minimum-energy conformation with an intramolecular hydrogen bond was found for each com
Autor:
Aleksander Ratajczak, H. Niedbala
Publikováno v:
ChemInform. 32
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 59:259-262
A new class of artificial sweeteners has been developed on the basis of 2,2-dimethyl-1-phenyl-sulfonylcyclopropaecarboxylic acid.
Publikováno v:
Monatshefte für Chemie - Chemical Monthly. 113:965-972
Neue Oxathiaferrocenophane wurden durch Umsetzung von 1,1′-Bis(hydroxymethyl)ferrocen mit Dithiolen dargestellt, welche Sauerstoff in den Alkylketten enthalten. Die Reaktion von 1,1′-Bis(α-hydroxyethyl)ferrocenen mit Dithiolen fuhrte zu Mischung
Publikováno v:
Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry. 12:557-563
An alternative route leading to 1,1′-bis(β-hydroxyethyl)ferrocene is described. Another difunctional compound, 1,1′-bis(β-aminoethyl)ferrocene, was also prepared. Some of the physical and spectral properties of these compounds are reported.
Publikováno v:
Journal of Organometallic Chemistry. 179:181-185
A one-step synthesis has been devised for making sulphides containing the ferrocenylmethyl group, of the type FcCH2SR. These sulphides are formed by the reaction of ferrocene, formalin and a thiol, e.g. thioglycolic acid. in the presence of
Publikováno v:
Journal of Organometallic Chemistry. 222:127-130
Paracyclophanes containing one or two ferrocene units can be efficiently synthesized directly from 1,1′-di(hydroxymethyl)ferrocene and aromatic dithiols. In the reaction with di(4,4′-dimercaptomethylphenyl)methane the mononuclear paracyclophane w
Publikováno v:
Journal of Organometallic Chemistry. 91:73-79
A simple method for the preparation of optically active (+)- and (−)-1-ferrocenylethanol has been developed, which consists of a stereospecific cleavage of the carbon—sulphur bond in resolved (+)- and (−)- S -(1-ferrocenylethyl)-thioglycolic ac