Results 171 to 180 of about 3,283 (227)

ChemInform Abstract: THEBAINE AND ACETYLENIC DIENOPHILES

Chemischer Informationsdienst, 1982
AbstractThebain (1) reagiert mit Propiolsäuremethylester (II) in Methanol zu den beiden Addukten(I1I) und (IV).
A. SINGH, S. ARCHER, K. HOOGSTEEN, J. HIRSHFIELD   +3 more
openaire   +1 more source

Acyl‐normethine aus Thebain

Chemische Berichte, 1967
AbstractBei der Öffnung des Piperidinringes im Thebain mit Acetyl‐ und Benzoylchlorid sowie Chlorameisensäure‐äthyl‐und ‐benzylester in feuchtem Äthylacetat entstehen die entsprechen‐den Codeinon‐acyl‐normethine (1a–1d), die je nach Katalyse interessante Umlagerungs‐und Spaltungsreaktionen eingehen.
Christa Bertgen, Wilhelm Fleischhacker, Franz Vieböck   +2 more
openaire   +1 more source

Mikrobielle Umwandlung von Thebain

Experientia, 1969
Thebaine was transformed into 2 products by fermentation with a strain ofTrametes cinnabarina. The 2 compounds were isolated and identified as 14-Β-hydroxycodeinone and 14-Β-hydroxycodeinone-N-oxid.
D. Gröger, H. P. Schmauder
openaire   +1 more source

Determination of thebaine in crude thebaine samples by infrared and ultraviolet spectrophotometric methods

The Analyst, 1984
The determination of the thebaine content of crude thebaine concentrates by infrared and ultraviolet spectrophotometric methods is described. The results obtained with the two methods were found to compare favourably. The accuracy of these procedures was found to be superior to that of the K–34 (U.N.) method.
Arun Agnihotri, Satish Chandra Tewari, Pavan Khatod, Sadhana Banerjee, M. Balasubramanian   +4 more
openaire   +1 more source

Thebaine Adducts with Maleimides. Synthesis and Transformations.

ChemInform, 2005
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
E.E. Shults, M.M. Shakirov, G.A. Tolstikov, V.N. Kalinin, G. Schmidhammer   +4 more
openaire   +1 more source

Über das β‐Dihydro‐thebain

Helvetica Chimica Acta, 1950
AbstractThebain wird durch LiAlH4 in ein Dihydro‐thebain (β‐Dihydrothebain, VI) übergeführt, dessen Konstitution ermittelt worden ist. Die Verbindung ist stereoisomer mit dem schon bekannten „Thebainon‐enol‐methyläther”︁ (V) und unterscheidet sich von diesem durch Konfigurationsänderung am C‐Atom 14.
H. Schmid, P. Karrer
openaire   +1 more source

Thebaine from Root Cultures of Papaver bracteatum

Planta Medica, 1982
Root cultures derived from cell suspension cultures of Papaver bracteatum were shown to produce thebaine (yield 0.03%).
S W, Zito, E J, Staba
openaire   +2 more sources

Cyclo-adducts of thebaine with nitrosoarenes

Journal of the Chemical Society, Perkin Transactions 1, 1979
Thebaine (1) reacts reversibly with various nitroso-arenes to form cyclo-adducts by 1,4-addition of the nitrosogroup to the conjugated diene system of the alkaloid. Adducts (2) of thebaine with nitrosobenzene and with 4-chloro-, 4-methyl-, 3-methoxy-, and 4-nitro-nitrosobenzene have been prepared in good yield.
Gordon W. Kirby, Kenneth W. Bentley, Peter Horsewood, Serjinder Singh   +3 more
openaire   +1 more source

(−)-Thebaine

Acta Crystallographica Section C Crystal Structure Communications, 1996
C. H. Mahler, E. D. Stevens, M. L. Trudell, S. P. Nolan   +3 more
openaire   +1 more source

Studies on thebaine, III. Oxidative colorimetric analysis of thebaine

Archiv der Pharmazie, 1985
O F, Ellingsen, K E, Malterud, J K, Wold
openaire   +2 more sources