Results 231 to 240 of about 5,049 (275)

Thebaine Cyclopropanation.

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
E. E. Schultz, M. M. Shakirov, I. Yu. Bagryanskaya, Yu. V. Gatilov, G. A. Tolstikov, V. N. Kalinin, H. Schmidhammer   +6 more
openaire   +1 more source

Spectrofluorimetric determination of thebaine

Mikrochimica Acta, 1975
A method has been developed for the determination of morphine hydrochloride, codeine, papaverine, narcotine and thebaine in mixtures, by measurement of the native fluorescence of the first four components, the fluorescence of the apomorphine obtained by oxidation of morphine, and the fluorescence of the hydrolysis products obtained by heating thebaine ...
A. F. J. Jackson, Robert A. Chalmers
openaire   +3 more sources

Enhanced Production of Thebaine in Cell Suspension Cultures of Papaver bracteatum by overexpression of SalAT gene

, 2021
The Iranian poppy by the scientific name of Papaver bracteatum Lindl. has been long propounded as a source for thebaine. Thebaine is among secondary metabolites that due to its wide spread and unique medicinal properties play a valuable role in ...
A. Qaderi, N. Qavami, Sarah Ghezelbash, N. Zarinpanjeh   +3 more
semanticscholar   +1 more source

Thebain?Maleinimid-und Thebain?N-substituierte Maleinimid-Addukte

Monatshefte f�r Chemie, 1971
DasDiels-Alder-Addukt Thebain—Maleinimid wurde auf verschiedenen Wegen hergestellt. Substitution am Imidstickstoff durch Alkylhalogenide lieferte die entsprechenden N-Alkylderivate und durch Bromessigsaureathylester die entsprechende N-Carbathoxymethylverbindung. Aminolyse dieses Esters fuhrte zu einer Reihe von Amiden.
K. Eichinger, G. Sengstschmid, O. Hromatka   +2 more
openaire   +3 more sources

Thebaine Adducts with Maleimides. Synthesis and Transformations. [PDF]

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.
G. Schmidhammer, Tolstikov Genrikh A, Elvira E. Shults, Makhmut M. Shakirov, Valery N. Kalinin   +4 more
openaire   +2 more sources

The nitration of thebaine with tetranitromethane

Journal of the Chemical Society, Perkin Transactions 1, 1981
Thebaine (1) reacts in methanol with tetranitromethane to give, as the major product, 14β-nitrocodeinone dimethyl acetal (2a), which has been converted into, inter alia, 14β-nitrocodeinone (3a), 14β-aminocodeinone dimethyl acetal (2b), 14β-aminocodeinone (3b), and 14β-aminocodeine.
Gordon W. Kirby, Robert M. Allen, David J. McDougall   +2 more
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.
Peter Horsewood, K. W. Bentley, Gordon W. Kirby, Serjinder Singh   +3 more
openaire   +2 more sources

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.
Pavan Khatod, Mahalingam Balasubramanian, Arun Agnihotri, S Banerjee, Satish Chandra Tewari   +4 more
openaire   +2 more sources

Mechanism of atmospheric pressure chemical ionization of morphine, codeine, and thebaine in corona discharge-ion mobility spectrometry: Protonation, ammonium attachment, and carbocation formation.

Journal of Mass Spectrometry, 2020
Atmospheric pressure chemical ionizations (APCIs) of morphine, codeine, and thebaine were studied in a corona discharge ion source using ion mobility spectrometry (IMS) at temperature range of 100°C-200°C.
Younes Valadbeigi, V. Ilbeigi, Maryam S Mirsharifi   +2 more
semanticscholar   +1 more source

The pharmacology of thebaine in the chronic spinal dog

Drug and Alcohol Dependence, 1978
The effects of thebaine were studied in nondependent and morphine-dependent chronic spinal dogs as well as in chronic spinal dogs receiving thebaine chronically. Thebaine did not produce any morphine-like effects in nondependent dogs nor did it precipitate an abstinence syndrome in morphine-dependent dogs.
W.R. Martin, P.E. Gilbert
openaire   +3 more sources