Results 41 to 50 of about 1,809 (150)

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

ChemCatChem, 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, Santipap Chaiyasarn, Zheng Guo, Jaehong Han, Bekir Engin Eser   +4 more
wiley   +1 more source

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

Journal 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, H Naghdi Badi, A Qaderi, A Mehrafarin, F Khalighi-Sigaroodi, AR Zare Karizi   +5 more
doaj  

High variations of the thebaine concentrations in Iranian poppy (Papaver bracteatum Lindl.) from various regions in Iran

Journal of Applied Botany and Food Quality
This paper aims to contribute reliable information to promote the pharmacological utilization of Papaver bracteatum by analyzing its wild population in Iran. For this purpose, 27 Iranian poppy specimens from 7 provinces of Iran were analyzed.
Mahdi Yahyazadeh, Mahshid Rahimifard, Najmeh Hadi, Zahra Shirazi, Samaneh Asadi-sanam, Razieh Azimi, Yousef Ajani, Maryam Makizadeh, Aiuob Moradi, Mahmood Bidarlord, Mozhgan Larti, Hamideh Fakhr-ranjbari, Negar Valizadeh, Taiebeh Amini, Dirk Selmar   +14 more
doaj   +1 more source

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

Influenza 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, Yu‐Li Chen, Anna Hostalkova, Jakub Chlebek, Chung‐Fan Hsieh, Bing‐Hung Chen, Lucie Cahlikova, Stefan Kosturko, Anders Backlund, Jim‐Tong Horng, Tsong‐Long Hwang, Michal Korinek   +11 more
wiley   +1 more source

Improved evaluation method for reliable distinction of poppy (Papaver somniferum L.) cultivars

International Journal of Horticultural Science, 1999
Investigating seven Hungarian standard cultivars (i.e. 'A1’, 'Kék Gemona', '13C-2`,'Kék Duna', `Kompolti M’, `Gödi N', 'Kozmosz) it was proved that for the reliable distinction between cultivars a complex analysis is necessitated. Because of the large
J. Bernáth, J. Bakó, F. Petheő
doaj   +1 more source

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

Chemistry &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, Milena Costa Bassicheto, Maria Vitória de Oliveira, Ana Beatriz dos Santos de Souza, Gabriella Melo Alves, Thiago André Moura Veiga   +5 more
wiley   +1 more source

Synthesis of Morphinan Alkaloids in Saccharomyces cerevisiae. [PDF]

PLoS ONE, 2015
Morphinan alkaloids are the most powerful narcotic analgesics currently used to treat moderate to severe and chronic pain. The feasibility of morphinan synthesis in recombinant Saccharomyces cerevisiae starting from the precursor (R,S)-norlaudanosoline ...
Elena Fossati, Lauren Narcross, Andrew Ekins, Jean-Pierre Falgueyret, Vincent J J Martin   +4 more
doaj   +1 more source

Acetylation‐Deacetylation‐Driven Natural Product Biosynthesis

ChemistryEurope, Volume 3, Issue 4, July 14, 2025.
This review summarizes the role of acetylation‐deacetylation in natural product biosynthesis, including acetylation followed by deacetylation after several biosynthetic steps, acetylation‐mediated rearrangement, acetylation‐triggered elimination, and the acetylation cycle as a regulatory mechanism. These processes are vital for the formation of complex
Huibin Wang, Ikuro Abe
wiley   +1 more source

Evaluation of Genetic Diversity of Papaver bractaetum Lindl. Populations in Alborz Mountain Using SCoT Molecular Markers

Journal of Medicinal Plants, 2019
Background: Iranin poppy (Papaver bracteatum Lindl.) belongs to Papaveraceae family which has important alkaloids such as thebain. Objective: Investigation of genetic diversity and population structure of Iranian poppy populations from Alborz Mountains ...
javad shaghaghi, alaeddin kordenaeej, ardeshir qaderi   +2 more
doaj  

La région thébaine dans les relations des voyageurs anciens de 1600 à 1799 (Description de l'Egypte)

Dialogues d'Histoire Ancienne, 1992
Cet article fait le point sur les premières explorations de la région thébaine entre 1600 et 1799 (l'expédition de Bonaparte), et ce à travers les relations des voyageurs de l'époque. Avant cette date, Thèbes semble n'avoir été visité que par un voyageur
Abdellah Filal
doaj   +1 more source