Results 31 to 40 of about 483,373 (407)

Biologically active isoquinoline alkaloids covering 2014–2018

open access: yesMedicinal research reviews (Print), 2020
Isoquinoline alkaloids, an important class of N‐based heterocyclic compounds, have attracted considerable attention from researchers worldwide since the early 19th century.
Xiao-fei Shang   +10 more
semanticscholar   +1 more source

Structure-activity relationships of synthetic analogs of jasmonic acid and coronatine on induction of benzo[c]phenanthridine alkaloid accumulation in Eschscholzia californica cell cultures [PDF]

open access: yes, 2000
A facile test system based on the accumulation of benzo[c]phenanthridine alkaloids in Eschscholzia californica cell suspension culture (an indicator of defense gene activation) has been used to analyze a series of synthetic compounds for elicitor-like ...
Dzink J.L.   +5 more
core   +1 more source

Environmental variations on physicochemical properties in vasicine content of Adhatoda vasica - An ayurvedic medicinal plant

open access: yesNotulae Scientia Biologicae, 2023
Adhatoda vasica (Acanthaceae) is a medicinal plant used in traditional formulations for the treatment of various disease conditions. The physicochemical properties fluctuate with the season and in response to stress.
Palshikar GAUTAM   +1 more
doaj   +1 more source

A NEW ALKALOID ISOLATED FROM Tabernaemontana hystrix Steud. (Apocynaceae) AND THE ANTIPROLIFERATIVE POTENTIAL OF THE ROOT BARK AGAINST HUMAN CERVICAL CANCER (HeLa) [PDF]

open access: yesQuímica Nova
Cervical cancer is the fourth most common cancer in the world and the third most common in Brazilian women. The search for compounds with anticancer potential is important, since cancer is a public health problem, and some drugs may lead to side effects.
Thalya S. R. Nogueira   +8 more
doaj   +1 more source

Pd-catalyzed enantioselective aerobic oxidation of secondary alcohols: Applications to the total synthesis of alkaloids [PDF]

open access: yes, 2008
Enantioselective syntheses of the alkaloids (-)-aurantioclavine, (+)-amurensinine, (-)-lobeline, and (-)- and (+)-sedamine are described. The syntheses demonstrate the effectiveness of the Pd-catalyzed asymmetric oxidation of secondary alcohols in ...
Bagdanoff, Jeffrey T.   +5 more
core   +2 more sources

Endophytic fungi: hidden treasure chest of antimicrobial metabolites interrelationship of endophytes and metabolites

open access: yesFrontiers in Microbiology, 2023
Endophytic fungi comprise host-associated fungal communities which thrive within the tissues of host plants and produce a diverse range of secondary metabolites with various bioactive attributes.
Priyanka Jha   +6 more
doaj   +1 more source

A yeast platform for high-level synthesis of tetrahydroisoquinoline alkaloids

open access: yesNature Communications, 2020
The tetrahydroisoquinoline (THIQ) moiety is a privileged substructure of many bioactive natural products and semi-synthetic analogs. Plants manufacture more than 3,000 THIQ alkaloids, including the opioids morphine and codeine.
Michael E. Pyne   +7 more
semanticscholar   +1 more source

Bio-Guided Assay of Ephedra foeminea Forssk Extracts and Anticancer Activities: In Vivo, In Vitro, and In Silico Evaluations

open access: yesMolecules, 2023
Ephedra is one of the oldest known medicinal plants and the largest genera of the Ephedraceae family. In vivo antitumor evaluation of Ephedra foeminea revealed that ethyl acetate (EtOAc) was the most bioactive fraction.
Jilan A. Nazeam   +3 more
doaj   +1 more source

Structures and Biological Activities of Alkaloids Produced by Mushrooms, a Fungal Subgroup

open access: yesBiomolecules, 2022
Alkaloids are a wide family of basic N-containing natural products, whose research has revealed bioactive compounds of pharmacological interest. Studies on these compounds have focused more attention on those produced by plants, although other types of ...
Jesús G. Zorrilla, Antonio Evidente
doaj   +1 more source

Effect of Processing Methods on Nutritive and Antinutritive Properties of Seeds of Brachystegia eurycoma and Detarium microcarpum from Nigeria [PDF]

open access: yes, 2009
Proximate analysis of the seeds of Brachystegia eurycoma and Detrarium microcarpum were carried out on both the dehulled and undehulled samples of the flour.
Iweala, E. E. J.   +3 more
core   +1 more source

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