Results 171 to 180 of about 2,920 (220)

Biflavonoids as novel antituberculosis agents

Bioorganic & Medicinal Chemistry Letters, 2001
A series of naturally occurring and synthetic biflavonoids was evaluated for inhibitory activity against Mycobacterium tuberculosis H37Rv (Mtb). Compounds 6, 24, and 25 demonstrated 96, 95, and 87% inhibition, respectively, at a screening concentration of 12.5 microg/mL.
Y M, Lin, M T, Flavin, C S, Cassidy, A, Mar, F C, Chen   +4 more
openaire   +2 more sources

Biflavonoids from Ouratea multiflora

Fitoterapia, 2001
A new flavone dimer, 3-hydroxy-4',5,7-trimethoxyflavone-(6-->8")-3"-hydroxy-3"',4"', 5",7"-tetramethoxyflavone, together with amenthoflavone, have been isolated from the leaves of Ouratea multiflora. Its structure was established by spectroscopic methods, including two-dimensional NMR spectroscopy.
J, D'arc Felicio, M H, Rossi, H R, Park, E, Gonçalez, M M, Braggio, J M, David, I, Cordeiro   +6 more
openaire   +2 more sources

Electrochemical synthesis of biflavonoids

Chemistry of Natural Compounds, 2013
Biologically active biflavonoids have consistently attracted the attention of researchers [1]. However, only a few of these compounds have a broad spectrum of biological activity. This has prompted scientists to prepare their semi-synthetic and synthetic analogs [2]. Thus, several approaches including metal-catalyzed cross coupling, oxidative coupling,
R. K. Nadirov, K. S. Nadirov, A. M. Esimova, Zh. K. Nadirova   +3 more
openaire   +1 more source

The biflavonoids of Plagiomnium undulatum

Phytochemistry, 1996
Abstract The biflavonoid pattern of Plagiomnium undulatum has been studied. Besides two known biflavonoids the new 3‴-desoxydicranolomin, 2,3-dihydro-3‴-desoxydicranolomin and 2,3-dihydro-5′,3‴-dihydroxyrobustaflavone have been isolated, and their structures elucidated spectroscopically.
Christoph Rampendahl, Tassilo Seeger, Hans Geiger, Hans Dietmar Zinsmeister   +3 more
openaire   +1 more source

Two biflavonoids from Ouratea nigroviolacea

Phytochemistry, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Ngo Mbing, J., Enguehard-Gueiffier, C., Atchade Ade, T., Allouchi, H., Gangoue Pieboji, Joseph, Mbafor, J. T., Tih, R. G., Pothier, J., Pegnyemb, D. E., Gueiffier, A.   +9 more
openaire   +2 more sources

A New Biflavonoid from Aristolochia contorta.

ChemInform, 2006
AbstractFor Abstract see ChemInform Abstract in Full Text.
Li-Li, Yu, Rong, Huang, Yu-Ping, Lv, Yong, Zhao, Yegao, Chen   +4 more
openaire   +2 more sources

Anti-influenza virus activity of biflavonoids

Bioorganic & Medicinal Chemistry Letters, 2007
Ginkgetin was found to inhibit the influenza virus sialidase. Ginkgetin-sialic acid conjugates showed a significant survival effect in the influenza-virus-infected mice.
Kazuhiko, Miki, Takayuki, Nagai, Kazushige, Suzuki, Ryo, Tsujimura, Kiyotaka, Koyama, Kaoru, Kinoshita, Kimio, Furuhata, Haruki, Yamada, Kunio, Takahashi   +8 more
openaire   +2 more sources

Synthesis of Phospholipase A₂ Inhibitory Biflavonoids.

ChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Jianjun, Chen, Hyeun Wook, Chang, Hyun Pyo, Kim, Haeil, Park   +3 more
openaire   +2 more sources

A bioactive biflavonoid from Campnosperma panamense

Fitoterapia, 2004
Lanaroflavone (1), a biflavonoid isolated from the methanol extract of the aerial part of Campnosperma panamense by bioguided fractionation, has been assessed for in vitro antiprotozoal activity. Lanaroflavone showed both antimalarial and leishmanicidal activities, but was inactive against Chagas disease vector, Trypanosoma cruzi.
B, Weniger, C, Vonthron-Sénécheau, G J, Arango, M, Kaiser, R, Brun, R, Anton   +5 more
openaire   +2 more sources

Cytotoxic biflavonoids from Selaginella willdenowii

Phytochemistry, 1995
Bioactivity-guided fractionation of the leaves of Selaginella willdenowii afforded three known biflavones, 4',7"-di-O-methylamentoflavone, isocryptomerin and 7"-O-methylrobustaflavone, that were significantly cytotoxic against a panel of human cancer cell lines. Non-cytotoxic isolates were also obtained, namely, amentoflavone, bilobetin, robustaflavone
G L, Silva, H, Chai, M P, Gupta, N R, Farnsworth, G A, Cordell, J M, Pezzuto, C W, Beecher, A D, Kinghorn   +7 more
openaire   +2 more sources