Results 91 to 100 of about 5,021 (275)

Studies on the chemistry of morphine and Amaryllidaceae alkaloids [PDF]

open access: yes, 1972
Nitrosation of thebaine using nitrosyl chloride, pentyl nitrite and nitrosyl sulphuric acid was investigated. Substitution was shown to take place at C-7 of thebaine.
Serjinder Singh (7167116)
core  

WHO Expert Committee on Drug Dependence, Thirty-fourth report. [PDF]

open access: yes, 2006
The WHO Expert Committee on Drug Dependence met in Geneva from 28 to 31 March 2006. Dr Howard Zucker, Assistant Director-General, Health Technology and Pharmaceuticals, and Dr Hans Hogerzeil, Director of Medicines Policy and Standards, welcomed the ...

core  

Comparison of Morphinan Alkaloids During Different Stages of Growth in the Medicinal Plant Opium Poppy (Papaver somniferum L.)

open access: yesJournal of Medicinal Plants, 2012
Background: Opium poppy contains important pharmaceutical alkaloids such as Morphine, Codeine, Thebaine, Noscapine, Papaverine and Sanguinarine which are of a high economic value in pharmaceutical industries.
M Omidi   +4 more
doaj  

Alkaloid Accumulation and Distribution within the Capsules of Two Opium Poppy (Papaver somniferum L.) Varieties

open access: yesPlants
The goal of this study was to clarify the role of capsule size and morphology in the alkaloid yield of poppy. In 2023, two industrial varieties from large-scale cultivation were investigated.
Péter Májer, Éva Zámboriné Németh
doaj   +1 more source

Fast and selective HPLC-DAD method for determination of pholcodine and related substances

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2011
Quality control of pharmaceuticals requires development of fast, efficient and reliable methods for determination of active compounds as well as known and very often unknown impurities within defined concentration ranges. In this work, a simple and rapid
Ana Petkovska   +2 more
doaj   +1 more source

Chemometric approach for development, optimization and validation of HILIC methods used for the determination of alkaloids from poppy straw

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2014
Two hydrophilic interaction liquid chromatography (HILIC) methods for simultaneous determination of the major alkaloids (morphine, codeine, thebaine, oripavine, papaverine and noscapine) in opium poppy straw (Papaver somniferum L., Papaveraceae) were ...
Jelena Acevska   +6 more
doaj   +1 more source

Synthesis of Novel Morphinans From Thebaine [PDF]

open access: yes, 1981
The synthesis of codeinone enol ethers from thebaine, via acetals of 14beta-bromocodeinone, has been successfully carried out. These enol ethers have, in turn, been converted into 6-alkoxy-6-desmethoxy-19-alkylthevinols, which have been shown to be ...
McDougall, Duncan Campbell
core  

ALKALOIDS OF PAPAVERACEAE (XVI) [I]. ALKALOIDS OF PAPAVER FUGAX POPULATION TAROM [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1997
Papaverfugax Poiret population Tarom was shown to contain one major alkaloid, mecamberine (0.4%), and six minor alkaloids, roemerine, pronuciferine, protopine, thebaine, nornuciferine and salutaridine.
doaj  

Adverse Effects of Opioid Dependency on Central and Peripheral Aspects of the Neuromuscular System

open access: yes, 2019
Prevalence of chronic pain and health care costs have caused an escalation of opioid dependency. The current national crisis involving opioid dependency and drug overdose are growing problems that need to be addressed.
Yang, Cindy
core  

The Chemical Investigation of Papaver Seeds [PDF]

open access: yes, 2012
The Papaver species (common name: poppy; plant family: Papaveraceae) has been involved in a wide array of research, particularly in the interest of botany, food biotechnology and clinical chemistry.
Mohsin, Hannis Fadzillah   +4 more
core   +2 more sources

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