Results 41 to 50 of about 1,660 (216)

Endophytic Consortium With Diverse Gene-Regulating Capabilities of Benzylisoquinoline Alkaloids Biosynthetic Pathway Can Enhance Endogenous Morphine Biosynthesis in Papaver somniferum

open access: yesFrontiers in Microbiology, 2019
Secondary metabolite biosynthesis in medicinal plants is multi-step cascade known to be modulated by associated endophytes. While a single endophyte is not able to upregulate all biosynthetic steps, limiting maximum yield achievement.
Tania Ray   +5 more
doaj   +1 more source

Cobalamin‐Dependent Aryl Methyl Ether O‐Demethylases: Promising Enzymes for Biocatalytic Applications from Lignin Valorization to Organic Synthesis

open access: yesChemCatChem, Volume 17, Issue 21, November 10, 2025.
Cobalamin‐dependent aryl methyl ether O‐demethylases have high potential for biocatalytic applications, including lignin valorization and synthetic chemistry. In this review, we provide a detailed overview of such O‐demethylase systems identified to date from various microorganisms, including their mechanism, substrate scope and selectivity, and ...
Niels Krabbe Johnsen   +4 more
wiley   +1 more source

Direct and Simple O-Demethylation of Thebaine to Oripavine

open access: yes, 2016
Direct and Simple O-Demethylation of Thebaine to ...
Andrew Coop (1416964)   +2 more
core   +1 more source

The Effect of L-tyrosine on Thebaine Production in Cell Suspension Culture of Iranian Poppy (Papaver bracteatum)

open access: yesJournal of Medicinal Plants, 2016
Background: Using of elicitors and different compounds in cell suspension culture is an effective strategy for enhancement and improvement of important secondary metabolites production in in vitro conditions.
R Farjaminezhad   +3 more
doaj  

Total biosynthesis of opiates by stepwise fermentation using engineered Escherichia coli

open access: yesNature Communications, 2016
Opiates—the gold standard for pain relief—are currently produced by extraction from opium poppies. Here the authors show that bacteria can serve as an efficient and flexible platform for the production of opiates by demonstrating the total synthesis of ...
Akira Nakagawa   +9 more
doaj   +1 more source

In Vitro Polyploidy Induction in Persian Poppy (Papaver bracteatum Lindl.)

open access: yesCaryologia, 2020
Papaver bracteatum Lindl. grows as a wild perennial medicinal plant in Northern Iran and is known mainly for its high amounts of the pharmaceutically valuable alkaloid of thebaine. In vitro production of tetraploid P.
Saeed Tarkesh Esfahani   +2 more
doaj   +1 more source

Anticoronavirus Isoquinoline Alkaloids: Unraveling the Secrets of Their Structure–Activity Relationship

open access: yesInfluenza and Other Respiratory Viruses, Volume 19, Issue 10, October 2025.
ABSTRACT Background Natural alkaloids are a structurally diverse class of bioactive compounds with significant therapeutic potential. This study aimed to evaluate the in vitro antiviral activity of various natural alkaloids against coronaviruses, clarify molecular effects via bioassays and docking, and explore structure–activity relationships.
Marcela Safratova   +11 more
wiley   +1 more source

Studies on Cycloadducts of Thebaine and Thioaldehydes [PDF]

open access: yes, 1993
A new route to the synthesis of 14beta-alkylmorphinans, of interest as potential analgesics, has been developed. Several such morphinans have been produced by desulphurisation of the Diels-Alder cycloadducts of thebaine and thioaldehydes, or of related ...
McQuillan, James Thomas
core  

Optimization of Thebaine Production using Adventitious Roots of Papaver bracteatum Lindle. by Alteration of Aeration Volume and Temperature in Bioreactor

open access: yesJournal of Medicinal Plants, 2019
Background: Nowadays, the optimization of the culture conditions in bioreactors is considered as an approach to produce secondary metabolites such as thebaine.
N Qavami   +5 more
doaj  

Nonconventional Techniques in Plant Alkaloid Extraction: A Decade of Progress (2014–2023)

open access: yesChemistry &Biodiversity, Volume 22, Issue 8, August 2025.
This figure seeks to represent the evolution of the different unconventional approaches that were adopted for the extraction of plant‐derived alkaloids during the decade from 2014 to 2023. ABSTRACT Plant metabolism encompasses primary and secondary pathways, with secondary metabolism yielding diverse natural products crucial for plant adaptation and ...
Victor Menezes Sipoloni   +5 more
wiley   +1 more source

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