Results 51 to 60 of about 2,460 (195)

Bioactive Bis(indole) Alkaloids from a Spongosorites sp. Sponge

open access: yesMarine Drugs, 2020
Six new bis(indole) alkaloids (1–6) along with eight known ones of the topsentin class were isolated from a Spongosorites sp. sponge of Korea. Based on the results of combined spectroscopic analyses, the structures of spongosoritins A–D (1–4) were ...
Jae Sung Park   +9 more
doaj   +1 more source

3-[4-(1H-indol-3-yl)-1,3-thiazol-2-yl]-1H-pyrrolo[2,3-b]pyridines, nortopsentin Analogues with antiproliferative activity [PDF]

open access: yes, 2015
A new series of nortopsentin analogues, in which the imidazole ring of the natural product was replaced by thiazole and the indole unit bound to position 2 of the thiazole ring was substituted by a 7-azaindole moiety, was efficiently synthesized.
Attanzio, A.   +11 more
core   +2 more sources

Antemitotic activity of strychnopentamine, a bisindolic alkaloid

open access: yesJournal of Ethnopharmacology, 1984
Strychnopentamine has been tested for its cytotoxic and antitumor activities and compared with two other bisindolic alkaloids that possess an usambarane skeleton. The presence of a N-methylpyrrolidine group increases the antimitotic activity of this type of alkaloids.
Tits, Monique   +4 more
openaire   +3 more sources

Cloning and Overexpression of Strictosidine β-D-Glucosidase Gene Short Sequence from Catharanthus roseus in Escherichia coli [PDF]

open access: yesAdvanced Pharmaceutical Bulletin, 2019
Purpose: Strictosidine-β-D-glucosidase (SGD) is considered as a key enzyme in the production of bisindole alkaloids in Catharanthus roseus. The present study illustrated the production of a short sequence of this enzyme in Escherichia coli without codon ...
Ahmed Saeed Arafa   +4 more
doaj   +1 more source

The Janthinobacterium sp. HH01 genome encodes a homologue of the V. cholerae CqsA and L. pneumophila LqsA autoinducer synthases [PDF]

open access: yes, 2013
Janthinobacteria commonly form biofilms on eukaryotic hosts and are known to synthesize antibacterial and antifungal compounds. Janthinobacterium sp. HH01 was recently isolated from an aquatic environment and its genome sequence was established.
Blokesch, Melanie   +20 more
core   +4 more sources

Marine bisindole alkaloid: A potential apoptotic inducer in human cancer cells

open access: yesEuropean Journal of Histochemistry, 2018
Marine organisms such as corals, sponges and tunicates produce active molecules which could represent a valid starting point for new drug development processes.
Sara Salucci   +8 more
doaj   +1 more source

Eight Indole Alkaloids from the Roots of Maerua siamensis and Their Nitric Oxide Inhibitory Effects

open access: yesMolecules, 2022
Maerua siamensis (Capparaceae) roots are used for treating pain and inflammation in traditional Thai medicine. Eight new indole alkaloids, named maeruanitriles A and B, maeroximes A–C, and maeruabisindoles A–C, were isolated from them.
Sasiwimon Nukulkit   +7 more
doaj   +1 more source

Natural AChE inhibitors from plants and their contribution to Alzheimer´s disease therapy [PDF]

open access: yes, 2013
As acetylcholinesterase (AChE) inhibitors are an important therapeutic strategy in Alzheimer's disease, efforts are being made in search of new molecules with anti-AChE activity.
Alza, Natalia Paola   +4 more
core   +2 more sources

Exploration of Indole Alkaloids from Marine Fungus Pseudallescheria boydii F44-1 Using an Amino Acid-Directed Strategy

open access: yesMarine Drugs, 2019
The composition of the culture medium has great influence on the metabolite production of the marine fungus Pseudallescheria boydii F44-1. By adding amino acids to GPY culture medium, two new bisindole alkaloids, pseudboindoles A and B (1 and 2 ...
Mei-Xiang Yuan   +7 more
doaj   +1 more source

Antimicrobial activities of secondary metabolites of endophytic fungi isolated from Catharanthus roseus [PDF]

open access: yes, 2017
Introduction: Recently, several endophytes have been shown to possess the potentials to synthesize novel bioactive compounds that have found use for drug discovery. We isolated endophytic fungi associated with Catharanthus roseus collected from the river
Abba, Chika C.   +6 more
core   +2 more sources

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