Vismiones L and M from Ochna pulchra

Sibanda, Sifiso; Nyanyira, C.; Nicoletti, Marcello; Galeffi, C.

doi:10.1016/s0031-9422(00)90866-5

Cited by 10 publications

(10 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This genus is known to be rich in biavonoids, anthranoids and oavonoids (Mohammad et al 1982, Kamil et al 1983, 1987Messanga et al 1992Messanga et al , 1994Messanga et al , 2000Rao et al 1997;Sibanda et al 1990Sibanda et al , 1993Kittisak et al 2001;Williams and Grayer 2004). Ochna integerrima (Loureiro) Merrill is a small tree.…”

Section: Introductionmentioning

confidence: 99%

Shoot organogenesis and somatic embryogenesis from leaf and shoot explants of Ochna integerrima (Lour)

Lü

Silva

et al. 2010

Plant Cell Tiss Organ Cult

View full text Add to dashboard Cite

Ochna integerrima is a medicinal and ornamental plant in Southeastern Asia. It has been listed as a rare and endangered species in China. Here we studied the effects of plant growth regulators and their concentrations on the induction of somatic embryogenesis and shoot organogenesis from leaf and shoot explants of O. integerrima for the first time. Cytokinins played a crucial role in somatic embryogenesis and shoot organogenesis. Among them, a higher concentration of thidiazuron (10.0-15.0 lM TDZ) could induce both somatic embryogenesis and adventitious shoot formation whereas low concentrations of TDZ (5.0 lM) could only induce adventitious shoots. However, 6-benzyladenine (BA at 5-15 lM) could only induce adventitious shoots. Shoot explants induced more adventitious shoots and somatic embryos than leaf explants when cultured on medium with the same concentration (5-15 lM) of TDZ or 15 lM BA. Medium containing 0.5 lM a-naphthaleneacetic acid and 8 lM indole-3-butyric acid and 0.1% activated charcoal could induce adventitious roots within 1 month. An efficient mass propagation and regeneration system has been established.

show abstract

Section: Introductionmentioning

confidence: 99%

Shoot organogenesis and somatic embryogenesis from leaf and shoot explants of Ochna integerrima (Lour)

Lü

Silva

et al. 2010

Plant Cell Tiss Organ Cult

View full text Add to dashboard Cite

show abstract

“…Vismiones are lipophilic anthranoid pigments occurring in a number of these species. To date, representatives of this group such as vismiones A (Pasqua et al 1995), B (Nicoletti et al 1982), C, D, E (Botta et al 1983;Delle Monache et al 1985;Abou-Shoer et al 1993), F , G (Delle , H (Botta et al 1986b), L, andM (Sibanda et al 1993), and some of their natural derivatives (Nicoletti et al 1982;Delle Monache et al 1985;Botta et al 1986a) have been isolated and described.…”

Section: Introductionmentioning

confidence: 99%

Vismione H and structurally related anthranoid compounds of natural and synthetic origin as promising drugs against the human malaria parasite Plasmodium falciparum : structure-activity relationships

François

Steenackers

Assi

et al. 1999

Parasitology Research

View full text Add to dashboard Cite

Natural and synthetic anthranoid compounds were subjected to an evaluation against asexual erythrocytic stages of the human malaria parasite Plasmodium falciparum in vitro. Stimulated by the good activities of Vismia guineënsis extracts, a more detailed investigation of the active principles revealed the pre-nylated preanthraquinone vismione H (1) to be a potent antimalarial [50% growth-inhibitory concentration (IC50) 0.088 microg/ml]. On the basis of this finding a series of chemically related phlegmacins (2-5), flavomannins (6-8), and rufoolivacins (9-11) isolated from several species of Cortinarius, a genus of higher fungi, and 5 synthetic vismione-like anthranoids (12-16) were evaluated as well. Although these compounds displayed weaker antiplasmodial effects than did vismione H (1) itself, considerable levels of activity were obtained with phlegmacin B1 (2), flavomannin-6,6'-di-O-methyl ether A1 (6), trans-4-hydroxy-flavomannin-6,6'-di-O-methyl ether A (8), and rufoolivacin B (10). Initial preconditions for activity within the vismiones and related anthranoids were established.

show abstract

“…[8]; it is also the intermediate of synthetic product [9], i.e., paeciloquinone C. This compound, the common anthraquinone structurally comparable to our monomer compound, was also isolated from fungus Paecilomyces carneus [10]. Further anthraquinones with unusual isoprenyl (geranyl) chain(s) were isolated and identified in different plants [11] or synthesized [12,13]. On the contrary, vismiaquinone, the anthraquinone with isopentenyl side chain, was isolated from the leaves of Vismia reichardtiana [14].…”

Section: Introductionmentioning

confidence: 52%

The colleflaccinosides, two chiral bianthraquinone glycosides with antitumor activity from the lichen Collema flaccidum collected in Israel and Russia

Řezanka

Dembitsky

2006

Natural Product Research

View full text Add to dashboard Cite

Colleflaccinosides A and B, two chiral bianthraquinone glycosides from the two geographical varieties of lichen Collema flaccidum collected in Russia and Israel have been isolated as new natural products. Their structures were elucidated using UV, CD, IR, MS, 1D and 2D NMR spectral data, and chemical degradation. The colleflaccinosides B had significant antitumor activity in the crown gall tumor inhibition test.

show abstract

Vismiones L and M from Ochna pulchra

Cited by 10 publications

References 2 publications

Shoot organogenesis and somatic embryogenesis from leaf and shoot explants of Ochna integerrima (Lour)

Shoot organogenesis and somatic embryogenesis from leaf and shoot explants of Ochna integerrima (Lour)

Vismione H and structurally related anthranoid compounds of natural and synthetic origin as promising drugs against the human malaria parasite Plasmodium falciparum : structure-activity relationships

The colleflaccinosides, two chiral bianthraquinone glycosides with antitumor activity from the lichen Collema flaccidum collected in Israel and Russia

Contact Info

Product

Resources

About