Results 101 to 110 of about 5,021 (275)

Transient Expression of cor Gene in Papaver somniferum

open access: yesBioImpacts, 2011
Introduction: Papaver somniferum is the commercial source of morphine and codeine. The isolation of effective genes involved in the morphine biosynthesis of P.
Bahman Hosseini   +6 more
doaj   +1 more source

Literary investigation on the origin of poppy and other narcotics Research Articles

open access: yesJournal of Pharmacopuncture, 2009
Objectives : This study was performed to developing orally administered analgesics and locally injected pharmacopuncture analgesics like opioids. Methods : Literary investigation on the origin of poppy (Papaver somniferum L) and other narcotics was ...
Lim Chung San   +5 more
doaj   +1 more source

Intraspecific taxonomy of plant genetic resources – Important for differentiation of medicinal and aromatic plants?

open access: yesJulius-Kühn-Archiv, 2016
Taxonomy of plant genetic resources is an important input in characterising and evaluating cultivated plants and essential for identification and documentation of the diversity of genebank collections.
Lohwasser, Ulrike   +2 more
doaj   +1 more source

Cytochrome P450 3A Enzymes Catalyze the O6-Demethylation of Thebaine, a Key Step in Endogenous Mammalian Morphine Biosynthesis*

open access: yesJournal of Biological Chemistry, 2015
Background: Mammals synthesize endogenous morphine; the enzyme catalyzing thebaine O6-demethylation, a key late step, is uncharacterized. Results: Human cytochromes P450 (P450) 3A4 and 3A5 catalyzed thebaine O6-demethylation; the P450 3A-selective drug ...
Valerie M. Kramlinger   +3 more
semanticscholar   +1 more source

Synthesis of New, Sulphur-Containing Morphinan Analgesics [PDF]

open access: yes, 1988
A new sulphur-containing cycloadduct, 8-thiathevinone, was formed by Diels-Alder reaction of the transient thioaldehyde 2-oxopropanethial with thebaine. The thioaldehyde was best prepared and trapped in situ, from S-(2-oxopropyl) toluene-p-thiosulphonate
Sclare, Alastair David
core  

Biomimetic synthesis of neodihydrothebaine and bractazonine from thebaine [PDF]

open access: green, 1984
Hubert G. Theuns   +3 more
openalex   +1 more source

The Synthesis of 14-Nitro- and 14-Amino-Codeinone Derivatives [PDF]

open access: yes, 1975
The reaction of tetranitromethane with thebaine (4) has been studied and alternative routes to 14beta-amino-derivatives of codeine (2) investigated. The nitration of thebaine with tetranitromethane gave 14beta-nitrocodeinone (53) or its ketal, and a ...
McDougall, David James
core  

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