Results 51 to 60 of about 1,584 (196)

Attempted Synthesis of Vinca Alkaloids Condensed with Three-Membered Rings

open access: yesMolecules, 2018
Our successful work for the synthesis of cyclopropanated vinblastine and its derivatives by the Simmons–Smith reaction was followed to build up further three-membered rings into the 14,15-position of the vindoline part of the dimer alkaloid ...
András Keglevich   +8 more
doaj   +1 more source

Phytochemical and Pharmacological Properties of the Genus Melodinus – A Review [PDF]

open access: yes, 2016
Melodinus is an important genus comprising of approximately 53 species of medicinal plants (Apocynaceae). Some species have been used in Chinese folk medicine for the treatment of meningitis in children, rheumatic heart diseases, and diuresis, as well as
Chen, Ye-Gao   +2 more
core   +2 more sources

Chapter 3 Noniridoid Bisindole Alkaloids

open access: yes, 1995
This chapter discusses that indole is a reactive nucleus prone to dimerization when it is isolated or a part of tryptamine or tryptophan, which themselves are reactive toward many functionalities. For these reasons, bisindoles, the majority of which are of iridoid origin, are frequently isolated in nature. Besides these “dimers,” there exists a growing
Sapi, J., Massiot, G.
openaire   +1 more source

Marine Sponge Derived Natural Products between 2001 and 2010: Trends and Opportunities for Discovery of Bioactives [PDF]

open access: yes, 2014
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).Abstract: Marine sponges belonging to the phylum Porifera (Metazoa ...
Franco, Christopher Milton   +3 more
core   +2 more sources

Transcription Factors in Alkaloid Engineering [PDF]

open access: yes, 2021
Plants produce a large variety of low-molecular-weight and specialized secondary compounds. Among them, nitrogen-containing alkaloids are the most biologically active and are often used in the pharmaceutical industry. Although alkaloid chemistry has been
Sato, Fumihiko, Yamada, Yasuyuki
core   +1 more source

The Raputindoles: Novel Cyclopentyl Bisindole Alkaloids from Raputia simulans

open access: yesOrganic Letters, 2010
A novel class of bisindole alkaloids is established by the isolation and structural determination of raputindoles A-D (1-4) from the Amazonian plant Raputia simulans Kallunki (Rutaceae). Complete spectroscopic characterization was accomplished by means of NMR spectroscopy and APCI (+) HRMS.
Vougogiannopoulou, K.   +4 more
openaire   +3 more sources

Ligand‐Based Pharmacophore Mapping and Virtual Screening for the Search of Biguanide‐Like Molecules With Antidiabetic Potentials Targeting Liver Kinase B1

open access: yesBiochemistry Research International, Volume 2026, Issue 1, 2026.
Type 2 diabetes mellitus (T2DM) is a state where the body’s glucose metabolism is compromised. AMP‐activated protein kinase, or AMPK, has an important part to play in glucose metabolism, and the liver kinase B1 (LKB1) protein functions as a major upstream kinase for AMPK activation, thereby making it appealing therapeutic targets for treating and ...
Rumman Reza   +6 more
wiley   +1 more source

Marine indole alkaloids [PDF]

open access: yes, 2015
Marine indole alkaloids comprise a large and steadily growing group of secondary metabolites. Their diverse biological activities make many compounds of this class attractive starting points for pharmaceutical development.
Netz, Natalie, Opatz, Till
core   +1 more source

Isolation and structural elucidation of compounds from Pleiocarpa bicarpellata and their in vitro antiprotozoal activity [PDF]

open access: yes, 2022
Species of the genus Pleiocarpa are used in traditional medicine against fever and malaria. The present study focuses on the isolation and identification of bioactive compounds from P.
Bella, M. A.   +7 more
core   +1 more source

Arenaria serpyllifolia as a Natural Antiviolaceum Agent: Phytochemical, Biological, and Molecular Approaches

open access: yesChemistryOpen, Volume 14, Issue 11, November 2025.
Arenaria serpyllifolia extract exhibits strong antioxidant, antimicrobial, antibiofilm, and antiquorum sensing activities. Key compounds, including levoglucosan and guanosine, show potent CviR receptor binding. Violacein inhibition and molecular dynamics confirm their stability, highlighting their potential as quorum sensing inhibitors and therapeutic ...
Meryem Burcu Külahcı   +5 more
wiley   +1 more source

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