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Página 1 a partir de 27 resultados
Chrotacumines A-D, chromone alkaloids from Dysoxylum acutangulum.
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Four new chromone alkaloids, chrotacumines A-D (1-4), consisting of a 5,7-dihydroxy-2-methylchromone, an N-Me piperidine ring, and an ester side chain were isolated from Dysoxylum acutangulum, and their structures including absolute configurations were elucidated on the basis of spectroscopic data
Chrotacumines G-J, chromone alkaloids from Dysoxylum acutangulum with osteoclast differentiation inhibitory activity.
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Four new chromone alkaloids, chrotacumines G-J (1-4), have been isolated from the barks of Dysoxylum acutangulum. Their structures and absolute configurations were elucidated on the basis of NMR and CD data. Chrotacumines G and J (1 and 4) showed osteoclast differentiation inhibitory activity in a
Chrotacumines E and F, two new chromone-alkaloid analogs from Dysoxylum acutangulum (Meliaceae) leaves.
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A chemical investigation of the alkaloidal fraction of Dysoxylum acutangulum leaves led to the isolation and characterization of two new chromone alkaloid analogs named chrotacumines E and F (1 and 2, resp.). Structure elucidation of 1 and 2 was achieved by spectroscopic analyses, including 2D-NMR.
Contraceptive and hormonal properties of the stem bark of Dysoxylum binectariferum in rat and docking analysis of rohitukine, the alkaloid isolated from active chloroform soluble fraction.
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BACKGROUND
This study was aimed to investigate the pregnancy interceptive activity of the stem bark of Dysoxylum binectariferum Hook. f. administered during the pre- and peri-implantation periods and immediately after implantation by oral route in adult female Sprague-Dawley rats.
METHODS
Ethanolic
A new alkaloid from Dysoxylum binectariferum.
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Two compounds (1 and 2) have been isolated from the stem bark of Dysoxylum binectariferum (Roxb.) Hook. f. ex Bedd. Compound 1 is rohitukine [5,7-dihydroxy-2-methyl-8-[4-(3-hydroxy-1- methyl)-piperidinyl]-4H-1-benzopyran-4-one], a known compound that has anti-inflammatory and immunomodulatory
Fusarium proliferatum, an endophytic fungus from Dysoxylum binectariferum Hook.f, produces rohitukine, a chromane alkaloid possessing anti-cancer activity.
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Rohitukine is a chromane alkaloid possessing anti-inflammatory, anti-cancer and immuno-modulatory properties. The compound was first reported from Amoora rohituka (Meliaceae) and later from Dysoxylum binectariferum (Meliaceae) and Schumanniophyton problematicum (Rubiaceae). Flavopiridol, a
Ambient ionization mass spectrometry imaging of rohitukine, a chromone anti-cancer alkaloid, during seed development in Dysoxylum binectariferum Hook.f (Meliaceae).
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Rohitukine, a chromone alkaloid, possesses anti-inflammatory, anti-cancer and immuno-modulatory properties. It has been reported from four species, belonging to the families, Meliaceae and Rubiaceae. Stem bark of Dysoxylum binectariferum (Meliaceae) accumulates the highest amount of rohitukine (3-7%
Rohitukine, a chromone alkaloid and a precursor of flavopiridol, is produced by endophytic fungi isolated from Dysoxylum binectariferum Hook.f and Amoora rohituka (Roxb).Wight & Arn.
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Rohitukine, a chromone alkaloid, has gained considerable international attention in recent years because of its novel semi-synthetic derivative, flavopiridol and P-276-00. Both these molecules are in advanced stages of clinical development and trial for cancer treatment. Recently, flavopiridol was
The Chromone Alkaloid, Rohitukine, Affords Anti-Cancer Activity via Modulating Apoptosis Pathways in A549 Cell Line and Yeast Mitogen Activated Protein Kinase (MAPK) Pathway.
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The field of cancer research and treatment has made significant progress, yet we are far from having completely safe, efficient and specific therapies that target cancer cells and spare the healthy tissues. Natural compounds may reduce the problems related to cancer treatment. Currently, many plant
Tirucallane-type alkaloids from the bark of Dysoxylum laxiracemosum.
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Eight novel tirucallane-type alkaloids (1-8) and 11 known compounds were isolated from a methanol extract of the bark of Dysoxylum laxiracemosum. The structures of 1-8 were elucidated using extensive NMR spectrometric and mass spectroscopic methods. Compounds 1 and 5, named laxiracemosins A and E,
Biomimetic Total Synthesis of Dysoxylum Alkaloids.
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A five-step total synthesis of Dysoxylum alkaloids has been achieved using a biomimetic approach from zanthoxylamide protoalkaloids. The synthesis featured a direct amidation and a Bischler-Napieralski reaction to form the dihydroisoquinoline ring, which was then subjected to a Noyori asymmetric
Pharmacological evaluation of the efficacy of Dysoxylum binectariferum stem bark and its active constituent rohitukine in regulation of dyslipidemia in rats.
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The antidyslipidemic effect of the ethanolic extract of Dysoxylum binectariferum stem bark and its major active constituent rohitukine was evaluated in a high fat diet (HFD)-fed dyslipidemic rat model. Chronic feeding of ethanolic extract (200 mg/kg) in HFD-fed rats showed significant lipid lowering
Dysoxylum binectariferum Hook.f (Meliaceae), a rich source of rohitukine.
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Rohitukine, a chromane alkaloid, is a precursor of flavopiridol, a promising anti-cancer compound. Currently in Phase III clinical trials, flavopiridol is a potent inhibitor of several cyclin-dependent kinases (CDKs). Rohitukine was first reported from Amoora rohituka (0.083% dry weight) followed by
Rohitukine inhibits NF-κB activation induced by LPS and other inflammatory agents.
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Rohitukine (referred to as RHK) is a bioactive chromone alkaloid isolated from the leaves of plant Dysoxylum binectariferum, which has been reported to possess diverse pharmacological properties for the treatment of inflammatory bowel disease (IBD), diarrhoea and anti-lipidemic. However, the
Flavopiridol, an inhibitor of cyclin-dependent kinases, induces growth inhibition and apoptosis in bladder cancer cells in vitro and in vivo.
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Flavopiridol is a semi-synthetic flavone analog of the alkaloid, rohitukine, a compound from an Indian tree, Dysoxylum binectariferum. It has been shown to inhibit cyclin-dependent kinases (CDKs), causing cell cycle arrest and growth inhibition. Flavopiridol is reported to have cytotoxic activity
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